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Identification of the website publisher
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Jerry Lagerhausen just wants the best for his Alden-Hebron softball team.
Even if it means using the same $300 high-performance composite fast-pitch bats that sent his daughter Hayli to the hospital with broken bones in her face four years ago.
They buy them for the "bubble transition zones," "inner socket technologies" and "optimized fused layers" that nobody understands. They come with a label warning of "a risk of serious injury or death."
"It just dropped [Hayli]," Lagerhausen said of the batted ball that struck his daughter in the jaw during a game at South Beloit. "It literally destroyed her face. You panic because it was my daughter, and she was only 16."
But Lagerhausen wants the best for his team. That's why you'll find the same model of composite bat that injured his daughter four years ago lining the dugout walls during the Giants' games and practices.
"I would be the first one to say that I'm just as guilty as anybody else," Lagerhausen said. "I'm no better, but in order for my girls to be able to compete, I have to do it."
What changed for Lagerhausen: He now requires all of his infielders to wear protective face masks.
More McHenry County softball players were stirred to join in on the face mask movement after Cary-Grove's Yale-bound pitcher, Lindsay Efflandt, took a batted ball to the face April 22.
Efflandt's high school career was put on hold so she could mend a broken orbital bone, jaw bone and sinus wall.
As high-performance bat technologies continue to push the pace of softball, attitudes toward infield safety equipment are relaxing despite a lack of action on the part of rule makers.
Efflandt immediately took up the cause.
"I'm not going back out there without [a mask]," the senior said. "I'm definitely an advocate for it now."
Not your grandmother's bats
Alyssa Lach was there when the changes started in youth softball.
"When I first started playing, it was a mix of composite and aluminum bats, and I've seen bats banned because the ball comes off so fast," Lach said. "They've definitely changed."
The third baseman, a junior at Jacobs who has committed to play softball for Division-I Butler, now uses the $300 Demarini CF5 composite bat, which has helped her hit six home runs this season.
"They have a bigger sweet spot, so if you hit it, you're going to hit it hard," Lach said.
Composite bats first broke into softball and baseball in the early 2000s and immediately caused a stir because of the explosive power created by the trampoline effect of their layered fibers. Within the last few years, they have become more available and prevalent for younger players.
The Amateur Softball Association of America set out to regulate the use of these bats and set a standard for a 98-mph batted-ball speed in 2004 that still is in use today.
Those standards are relied on by the IHSA and the National Federation of State High School Associations (NFHS), which sets the rules for most IHSA sports and for most high school sports in all 50 states.
"The NFHS has a unique relationship with softball in that the NFHS and the ASA and the NCAA all work together to come up with certified equipment," said Matt Troha, the IHSA administrator for softball. "From a bats standard, as long as a bat meets ASA certification, and has that stamp on it, then it's legal."
This means that the IHSA, like other state associations, has no control over bat standards used in their games. The ASA has certified as legal 495 composite bat models from 26 manufacturers. And while the ASA tests all the bats it certifies for batted-ball speed, continuing advancements in lightweight technologies, stiffer materials and balance continue to assist hitters.
"In the first few years, very seldom did I see home runs," 17th-year Prairie Ridge coach Mike Buck said. "But now they just pop off the bat. The ball just simply did not fly like it does now."
The wearing-in process is not unique to composite bats, but has been shown to be pronounced in increasing batted-ball speeds for composites. The 2004 ASA standard accounts for a natural wear-in process, but it doesn't account for what the ASA has termed illegal doctoring, in which bats can become even more dangerously explosive through various illegal forms of tampering.
A study completed by a master's student at Washington State University found that such bats could reach batted-ball speeds of 105 mph.
Troha admitted difficulties in detecting these illegal bats.
"[Doctored bats] can be difficult to detect, but we encourage umpires to look for dents, cracks, cuts, worn or missing certification stickers, marks or anything that could indicate a bat may have been cut open or adjusted," he said.
Starting with the 2011 season, the NFHS switched to a BBCOR standard for baseball bats, which called for more uniform testing and less explosiveness in that sport, but softball has yet to follow suit.
"I don't think that it would change the game that much [to implement lower speeds]," Lagerhausen said. "But I have some big hitters on my team, and they love it."
Troha doesn't see changes coming any time soon.
"As technology has progressed, they've gotten better at being able to really test the bats, and figure out how lively it is," he said. "But I think they still feel comfortable with where we're at right now with the bats, so I don't foresee anything as significant as what they did in baseball on the near horizon."
Instead, for the 2009 season, the IHSA assisted batters by immediately adopting the NFHS' new 43-foot circle distance that gave batters 3 extra feet to see pitches.
"It will increase offense and get the defense more involved in the game, but more importantly it has the potential to improve safety for the pitchers," IHSA Executive Director Marty Hickman said in a news release. "When you consider the safety factor, there really wasn't a logical reason to wait a year to move the pitching distance."
Given the 43-foot distance from home plate, 98-mph batted-ball speeds and batters that now train year-round in the quest for a Division-I scholarship, pitchers now have less time than ever to react to a batted ball.
Alden-Hebron encountered a situation recently in which one of its hitters injured the opposing pitcher without even swinging.
"All she did was touch the ball, and it drilled the pitcher right in the wrist," Lagerhausen said. "The pitcher went to the emergency room with a sprained wrist. She had no time to move or react."
Masks not just for catchers anymore
When Crystal Lake South pitcher Heather Eck stepped into the circle April 25 for a start against Johnsburg, three days after Efflandt went down with her gruesome injury, she was wearing a face mask for the first time in her softball career.
It helped her escape injury.
"I took a line drive to the shoulder and it [bounced] off my shoulder and into my face mask," Eck said. "It was kind of scary, but I'm really glad that I was wearing the mask."
The senior's parents bought her a mask after encouragement from her coach, Scott Busam, on the day of Efflandt's injury.
"At first, I was against wearing face masks," Eck said. "I thought they were a distraction and not for me."
Word was spreading.
Crystal Lake South pitcher Hailee Massie's dad was umpiring Efflandt's fateful game.
"My mom and I were out to dinner, and my dad called her, and told her what had happened," Massie said. "We were all shaken up, and I went out right away to get a mask."
Without hesitation, the sophomore thrower has worn it every game since.
"I tried a couple of different masks, and with some it was kind of hard to see," Massie said. "But the metal one I got is comfortable."
Efflandt's replacement in that game and in the circle since, sophomore Lauren Stanley, had only sometimes worn a mask before her teammate went down. That ended then.
"Sometimes in travel [softball] I [wore a mask], but when that happened to Lindsay, I'm always going to wear it now," Stanley said. "Better safe than sorry."
Efflandt herself had worried that wearing a face mask would limit recruitment opportunities.
"Some college coaches won't recruit pitchers who wear masks because they think they're scared of the ball, and I think that's ridiculous," Efflandt said. "My Yale coaches definitely don't [care]. I'll wear a mask in college. I don't care if I get grief for it."
But college coach and recruiter Michelle Venturella, a former member of the U.S. national softball team and a gold medalist at the 2000 summer Olympics, says masks don't figure into her recruiting process.
"Honestly, if I was watching a kid throw 65 miles per hour and she wore a mask, I wouldn't care," Venturella, who heads the softball program at the University of Illinois-Chicago said. "The thing is, can you get the job done? It's a piece of equipment, and I wouldn't hold it against a kid."
Venturella thinks times and attitudes are warming to the idea of increased mask use because of the composite bats.
"I wish our sport wasn't at the point where we needed to [change]," Venturella said. "I would hope that there's going to be a way to control how hot the bats are. ... I understand and I think we'll see more [infield masks]."
Gina Billy has seen the change in mask attitudes firsthand.
She played varsity softball for Prairie Ridge from in 2001, and now she's the hardlines manager at the Sports Authority on Cog Circle in Crystal Lake.
"Oh, definitely," Billy said of mask sales over the past few months. "I even wrote to our district manager because we couldn't keep them in stock."
On Thursday, her store's supply of SKLZ full-face softball fielder shields, which the store sells for $39.99, were thinning.
"The problem is that we're selling all the smalls and mediums," Billy said. "All I have left are the larges, so it's the younger girls that are getting them."
Venturella admitted that infield masks are rarely seen at the Division-I level, despite the same 43-foot pitching distance, but she understands the value.
"I had a situation actually where a former pitcher of mine was hit when I was coaching at the University of Iowa ... and it was a huge injury," she said. "So I understand why that if something happened in the past, of course you might want to prevent that from happening in the future."
Mandating a solution
While some youth leagues have begun mandating face masks for infielders, the NFHS, the NCAA, the ASA and the IHSA have not.
"To be honest, I don't hear a lot about it," the IHSA's Troha said. "Occasionally where you have an instance where a girl gets hit, people come out and tend to make that case that we need to do something else or make the pitching masks mandatory. Honestly, I hear very little about it day to day."
Prairie Ridge pitcher Kirsten Stevens, whose batted ball struck Efflandt's face, still takes the field without a mask.
"It's a personal choice," Stevens' coach, Buck, said. "I almost liken it to wearing a helmet for a bicycle or motorcycle."
But Hayli Lagerhausen wishes that on April 27, 2009, somebody had told her to wear a mask when her fateful pitch, which was supposed to be inside, missed its mark and instead went right down the middle.
South Beloit's batter took advantage. Hayli froze.
"I remember it coming at me," Hayli said. "I'm standing there wondering, 'why aren't you moving?' "
She didn't black out when the ball struck her face, but flipped over backwards and fell face first on the ground. Her father was immediately at her side.
"He said that he was out in the circle before I even hit the ground," Hayli said.
After four hours in the emergency room, and several frustrating visits to plastic surgeons, Hayli waited out the injury as it healed itself.
But her father in that instant became an outspoken supporter of masks as long as there are composite bats in softball.
"Everybody's wrapped up on no steroids, no steroids, no steroids, but you allow these girls to use bats that are on steroids," he said. "So if they were to take these bats and tone them down – take them off steroids – don't make them quite so explosive – then there would be no need for the masks."

subset: commoncrawl


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Que From Day 26 Covers Michael Jackson's Human Nature! [Guitar / Vocal Performance]
Que Jan 11 Countdown to Day 26 "THIS IS WHAT I DO"
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It's a median if half of the people are below and half above.
At least at my school the prof has discretion on how to distribute grades to create the median. If the curb is a B+, the proffessor is within his/her discression to give every person in the class a B+, or to give out only As and Cs with nothing in between.


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Find Our Latest Video Reviews on YouTube!
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Live blogging the WWDC 2008 Steve Jobs Keynote
Posted by Andru Edwards Categories: Apple, Cell Phones, Corporate News, Handhelds, Internet, PC / Laptop,
In just about five minutes, Steve Jobs will be taking the stage to give his WWDC 2008 keynote. We are monitoring all the news, and will be bringing you updates on everything going on, live, as it happens on stage. In case you've been summering in Antarctica, we are expecting the new 3G iPhone to be launched (and not expecting it to be as radical as others think it will be - no front-facing camera, no iChat video chat - just some 3G and GPS goodness), Snow Leopard should be given out to developers to take home with them in anticipation of the launch of OS X 10.6 at MacWorld 2009, and the new .Mac replacement we've all been hearing about, Mobile Me, should be announced and shown off to the masses.
Well, it's just about time. Let's get started…
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Gallery: Live blogging the WWDC 2008 Steve Jobs Keynote
Sharp CMOS Cam Module RJ63SC100
Posted by Sheila Franklin Categories: Cameras, Cell Phones, Corporate News, Handhelds,
Sharp has come up with a teeny, tiny 5MP camera with auto-focus which they say is the planet's smallest. Set to come out en masse in July, we suspect that the CMOS cam module RJ63SC100 will become available on some of their holiday handhelds and other mobile products. Maybe they will lend out the design for spy-stuff which also continues to get smaller and smaller. Then again, perhaps it will inspire other companies to beat the diminutive size so that they can have the smallest.
Read More | Slashphone
Gallery: Sharp CMOS Cam Module RJ63SC100
Myvu Crystal Glasses
Posted by Sheila Franklin Categories: Handhelds, Misc. Tech, Portable Audio / Video, Video Games,
Myvu Crystal allows hands-free viewing for your PMP. The glasses feature their SolidOptex optical system, CyberDisplay technology for high pixel density, and a 33% wider field of view than their former products. The Ultimate Ears earbuds have extended bass and sound isolation and you can count on up to 4 hours of battery usage. The company calls them perfect for travel, movies, podcasts, and Guitar Hero. The Myvus come in Standard and iPod models are available in your choice of black or amber (temporarily unavailable) for $299.95. Check out their promo videos to see who they are hoping will snap these puppies up.
Read More | Myvu
Gallery: Myvu Crystal Glasses
Schmap Mapping for iPhone and iPod touch
Posted by Sheila Franklin Categories: Handhelds, Software,
Schmap has come out with a new beta service for iPhones and iPod touches similar to Google mapping. When you hold your device vertically, it features places of interest on a scrollable list which is updated dynamically. Rotate to landscape and it shows them on a map. Tap a name from the list or one of the icons to get more information such as location and phone number with pics. Touch previous or next and you get your choice of other places in the area. Contact Schmap on your iPhone to try out their service.
Read More | Schmap
Gallery: Schmap Mapping for iPhone and iPod touch
Philips X800 Smartphone
Posted by Sheila Franklin Categories: Cell Phones, Corporate News, Handhelds, Portable Audio / Video, Wireless / WiFi, USB,
Philips has come up with their answer to the iPhone shortage with the X800. The touchscreen phone has a 2.9-inch TFT display with 256K colors, QGVA with 240 x 400 pixels, 2G network GSM, and supports Bluetooth, micro SD, and USB. It also features GPRS, a 2 MP cam with auto-focus and video, an MP3/MPEG4/WAV/AAC player, voice memo, and organizer. Expect up to 850 hrs. of standby time with 8 hrs. of talk time. Contact Philips for price and availability details.
Read More | Just AMP
Gallery: Philips X800 Smartphone
Blackberry Bold
Posted by Sheila Franklin Categories: Cell Phones, Corporate News, Handhelds, Movies, Music, Portable Audio / Video, Wireless / WiFi,
Due to be released this summer is the Blackberry Bold. The smartphone features a 624MHz Intel PXA270 processor, a fully redesigned QWERTY keyboard, 3G HSDPA connectivity, and a HVGA 480 x 320 pixels TFT LCD with 65,000 colors. As with previous Blackberrys, the Bold has cam and video recording, social networking, GPS with maps and turn-by-turn directions, Wifi and Bluetooth capability, IM, e-mail, and BlackBerry Media Sync to transfer desktop iTunes music files.
Read More | Blackberry Product Page
Gallery: Blackberry Bold
iPhone screenshot shows 3G setting switch
Posted by Andru Edwards Categories: Apple, Cell Phones, Handhelds, Wireless / WiFi,
All signs are pointing to a new 3G iPhone launching in the next six weeks or so. The latest is this screenshot that is, supposedly, taken from the iPhone 2.0 Beta 5 firmware. Check it out - within the Network settings pane, you now have an Enable 3G toggle switch. It's a way to put a little bit of power back into your hands as the user, what do you care about more, speed, or battery life? I personally would love a setting that disabled 3G when the iPhone realized I was connected to a WiFi hotspot.
In all seriousness, Apple needs to launch this thing already. The employees over at the Rumor Mill are working way too many overtime hours.
Gallery: iPhone screenshot shows 3G setting switch
HTC Touch Diamond Smartphone
Posted by Sheila Franklin Categories: Cell Phones, GPS, Handhelds, Movies, Music, Wireless / WiFi,
HTC's Touch Diamond is the latest smartphone to join the pack. It features a 2.8-inch touch screen, TouchFLO 3D for images, a 3.2 megapixel auto-focus cam for stills and video, HSDPA connectivity, 4 GB memory, 256MB ROM, and 192 MB DDR SDRAM. There is GPS, HTC Weather reporting, and it has both Wifi and Bluetooth capability. At a size of 102 X 51 X 11.5mm and a weight of 110g, look for the Touch Diamond to come out for play in June.
Read More | HTC
Gallery: HTC Touch Diamond Smartphone
Samsung DVB-H Mobile TV Phone
Posted by Sheila Franklin Categories: Cell Phones, Corporate News, Handhelds, Movies, Music, Portable Audio / Video,
Samsung is making some strides with its slider DVB-H Mobile TV Phone. It features a 2.6-inch QVGA TFT screen with 262K colors, a 3 mp cam with power LED, a music player with library, an FM tuner, and Bang & Olufsen ICEPower tech for sound. With up to 5 hours of play, there is also an electronic service guide with TV channels and PIP, and Time-Shifting in case you are interrupted by a call. Unfortunately, the thin 16.7mm P960 will start out in Europe before it hits the States.
Read More | Aving
Gallery: Samsung DVB-H Mobile TV Phone
3G iPhone to cost $199 from AT&T
Posted by Andru Edwards Categories: Apple, Cell Phones, GPS, Handhelds, Rumors, Wireless / WiFi,
Get this - Fortune is saying that AT&T is going to be subsidizing the cost of the 3G iPhone by $200, which would mean that you could get one of the new phones for $199 USD with a 2-year contract. Now, that isn't as crazy as it seems, as they do this with just about every other phone that they offer. They just haven't been doing it with the first iPhone. Now, to be clear, if you made the decision to buy the phone from an Apple Store, you would be paying the full price.
Other tidbits in the Fortune article state that the new phone will be 2.5mm thinner than the current iPhone (which itself is 11.7mm thick), and that it will also include a GPS chip. Pricing will be $399 for the 8GB version, and $499 for the 16GB model, before subsidies. As with all Apple rumors, we take this one with a grain of salt, but hey, it's Fortune, right?
Read More | Fortune
Gallery: 3G iPhone to cost $199 from AT&T
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Quality of Service
Since different applications — for example, telephone, e-mail and surveillance video — may be using the same IP network, there is a need to control how network resources are shared to fulfill the requirements of each service. One solution is to let network routers and switches operate differently on different kinds of services (voice, data, and video) as traffic passes through the network. By using Quality of Service (QoS), different network applications can co-exist on the same network without consuming each other's bandwidth.
The term, Quality of Service, refers to a number of technologies such as Differentiated Service Codepoint (DSCP), which can identify the type of data in a data packet and so divide the packets into traffic classes that can be prioritized for forwarding. The main benefits of a QoS-aware network include the ability to prioritize traffic to allow critical flows to be served before flows with lesser priority, and greater reliability in a network by controlling the amount of bandwidth an application may use and thus controlling bandwidth competition between applications. PTZ traffic, which is often regarded as critical and requires low latency, is a typical case where QoS can be used to guarantee fast responses to movement requests. The prerequisite for the use of QoS within a video network is that all switches, routers and network video products must support QoS.
Ordinary (non-QoS aware) network
In this example, PC1 is watching two video streams from cameras 1 and 2, with each camera streaming at 2.5 Mbit/s. Suddenly, PC2 starts a file transfer from PC3. In this scenario, the file transfer will try to use the full 10 Mbit/s capacity between the routers 1 and 2, while the video streams will try to maintain their total of 5 Mbit/s. The amount of bandwidth given to the surveillance system can no longer be guaranteed and the video frame rate will probably be reduced. At worst, the FTP traffic will consume all the available bandwidth.
QoS aware network
Here, Router 1 has been configured to devote up to 5 Mbit/s of the available 10 Mbit/s for streaming video. FTP traffic is allowed to use 2 Mbit/s, and HTTP and all other traffic can use a maximum of 3 Mbit/s. Using this division, video streams will always have the necessary bandwidth available. File transfers are considered less important and get less bandwidth, but there will still be bandwidth available for web browsing and other traffic. Note that these maximums only apply when there is congestion on the network. If there is unused bandwidth available, this can be used by any type of traffic.


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The Dreamz Single Point Needles come in a range of radiant colors for mix & match or organizational options. Perfect points, flawlessly tapered so they are ideal for all yarns and every project. They are lightweight, strong & flexible with polished wood surface that works effortlessly with every type of yarn without slowing down knitting rhythm.
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We provide endless possibilities for you including yarn, knitting gifts, needles, kits, sale yarn, free knitting patterns, and more!Jimmy Beans Wool is Your Local Yarn Store... Online!


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The Chemical Injury Information Network (CIIN) is a support and advocacy organization dealing with Multiple Chemical Sensitivities (MCS). It is run by the chemically injured for the benefit of the chemically injured, and focuses primarily on education, credible research into MCS, and the empowerment of the chemically injured.
CIIN is a charitable tax-exempt, non-profit, membership organization; its resources are, with a few exceptions, reserved for its members. Becoming a member is simple - make a donation in any amount. The link to our membership form, printed or electronic, is at the bottom of this page.
CIIN provides its members:
- Expert Witness / Doctor referrals
- Attorney referrals
- A list of organization(s) in the state where the member resides
- A list of CIIN members for the state where the member resides
- Referrals to experts in the fields of Electro-Magnetic Fields (EMF's), Less-Toxic Pesticide and Weed Control, etc.
- CIIN's monthly newsletter, Our Toxic Times
- Materials for educational events, such as Earth Day booths
- Resource materials
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text:
RainbowsAndCottonCandy wrote:uhhhhhh...........defense, because with the loss of gonch and whit we are now down to six nhl lvl defenseman, and none with a high level of breakout passing.
They pens may have a tough time getting the puck out without a commited effort of backchecking by our forwards.
I just broght this up in another thread. We have guys with the passing and skating out ability, but the decision making will be off at the start of the season. Gonchar was best at knowing when to skate it out, when to pass it, and where to pass it compared to the other dmen. I think we will see the Pens having a lot of trouble getting the puck out of their zone to start the season. It's just the difference between Letang's one year of experience vs Gonchar's 13 years.


text:
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|31st May 2013, 10:29 AM
diyAudio Member
Join Date: Mar 2005
Location: Riga
More rewarding speaker directivity pattern for in-room stereo listening
Since 2011 I was beating my head against the simple problem: my two-way loudspeaker prototype came out great sounding but measured almost poorly. I hope you can trust me there is not much of exaggeration here - it sounded great despite being just one speaker (I did not have room big enough to assemble two of them). My other-half was so impressed that demanded that I build another one and place them in our bedroom immediately after cosmetic uplift (of course). It took longer than expected, but I'm not worried.
Out of all audible subjective qualities of the speaker prototype I'd like to mention great micro-dynamics, very detailed sound on low to moderate level, nice overall bass balance with generous midbass, large presentation with speaker almost disappearing (yes, listening from just mono source!), nice clarity even at low listening levels, pleasant near-field listening despite the solid size of loudspeaker and significant distance between LF/HF drivers. Also great was 'around the corner' listening experience as sound was coherent and pleasant also when listening from nearby room. The most important was the fact hat speaker brought less brain fatigue than I used to have while ever listening to other speakers. Also there was something special about spatial aspects of the overall sound that seemed to be much better then usual. Speaker was assembled and tested in the sonically untreated (except various clutter in shelves working as nice dispersers) and small (2x3x2.5m) listening room. See attached drawing to get the idea of the enclosure design.
So when speaker was finished and initially tweaked we sat there in small, cold workshop me and my wife listening through lots of great music that we both love for a couple of hours like it was the first time we hear them. I named speakers RAD TQWT as RAD also stands for 'joy'. Assuming this sounds too romantic for serious thread, more pragmatic description will follow
Any flaws? Yes. a) limited macrodynamics b) sound being slightly too forward (at this point there was no back tweeter connected and whizzer cones weren't removed yet). When i really wanted to "crank it up" midbass speakers reached cone breakup levels met with SET amp power limits. That's something surely can be addressed with adding more bands and making it 3- or 4-way with separate bass amp, but the goal was to build a best possible two-way. Did we ever wanted to listen much louder? No, it really was big and loud enough at non-distorted levels with just a few watts of applied power.
|31st May 2013, 10:54 AM
diyAudio Member
Join Date: Mar 2005
Location: Riga
Topology, components and materials of the speaker
After studying various DYI attempts I compiled it all and came to perhaps somewhat unconventional speaker design.
- Two-way symmetric bipole (LF) + dipole (HF) with rear HF driver -3dB attenuated;
- Bass bipole part: two 12" Soviet production paper midbass drivers 4A32 from 70-ties. 95dB sensitivity, Qts around 0.27, Fr 50-60Hz depending on wear-level, 12Ohm each wired in parallel, in-phase magnets facing each other aka push-push configuration);
- 1-st order passive filter for HF, pseudo 2-nd order for LF with central crossover frequency at 1.3kHz;
- K73-9 type 3.9uF polyprophilene condenser in series with HF speakers and
- 1.2mH/0.7Ohm non-reference grade air-core coil inductor in series with LF speakers followed by RC Zobel filter parallel to speakers with RC values empirically chosen to lower Z raise of LF drivers at higher frequencies to exactly match Z rise of HF speakers (measured without series C connected to them), which turned out to be series RC of 10uF + 10Ohm parallel to LF drivers.
Back then I thought of matching Z curves as a new method of empirical simple passive filter design. As I later found out electrical phase matching may give some positive effect only if tweeter resonance is electrically damped with parallel RLC circuit and set amp is used. Of course, speaker gets less critical to cable resistance. Still i didn't worked it out yet - field for more investigation.
- Folded bass pseudo-horn with floor-facing exit aka TQWT. Here I invented traverse TQWT horn braces that also work as bracings for enslosure. The witdth of the enclosure allowed to do it without compromising gradual opening of the folded horn. This approach allowed me to create more wider and more shallow speaker enclosure.
- By gradually tilting speaker it is possible to change size of opening slot near the floor and somewhat adjust bass response to complement particular room mode resonances + some floor gain bonus for low end extension;
- Front side is sloped at about 6 degrees from vertical to lessen floor reflections and to make frontal/back sides non-parallel.
- Two Monacor DT-300 tweeters with complementary 17cm round elliptical WG-300 waveguides are wired in parallel and out-of-phase (later switched to series. 8Ohm, ~97dB sensitivity with WG @2kHz, steep response rolloff below 1.5kHz, gradual rolloff towards 20kHz), smooth, gradually decreasing dispersion above 1.6kHz.
- Midbass drivers were originally 'fullrange' - paper cones with whizzers. I removed dust caps and whizzers therefore eliminating three unwanted peaks at 4, 8 and 12kHz which resulted in nice 6dB/oct rolloff above 500Hz without any more peaks left to suppress. It also removed unwanted forwardness observed at the very beginning. Also I glued pieces of 5mm thick felt carpet on basket frame insides to reduce amount of MF/HF reflected back to speaker.
- 2 of 4 purchased Monacor HF drivers were rendered unusable by trying to follow Troel Gravesen's mod on these speakers (removal of felt plate and magnetic flux). At the end I figured out that while the mod indeed contributed to more response extension towards 1kHz it decreased damping of tweeter's resonance and made it less pleasant sounding. Out of four Monacors I had one speaker left as new, while other was already half-modified (only felt disc removed and tunnell stuffed with long-fiber cotton instead hence Fr went down from 1.6kHz to around 1kHz). The latter become my front HF driver.
Materials used:
- Impregnated 21mm Baltic birch plywood cabinet with front panel glued from two sheets for double-thickness;
- 'Naked' WG-300 waveguides attached to HF speakers as-is without any damping mods;
- HF speakers placed on top of LF cabinets decoupled from them by thin foam and magnets supported by thicker foam with possibility to move them back and forth to find out the best position.
Source, amp and measurement rig
- PC with Presonus FireStudio Mobile FireWire soundcard (24/96);
- Tri VP-MINI 300 Mark II Class A SET integrated stereo valve amplifier;
- ARTA v1.7.1 measurement software + measurement box;
- Behringer ECM8000 microphone;
- K&M microphone stand;
- Custom soldered Jack-Jack-RCA-RCA cables for signal interconnects;
- Oehlbach 2.5sqmm loudspeaker cables.
Total investment in speakers including materials was about 400EUR. 2 of 4 bass drivers were a gift from a friend, other pair I got for about 100,- EUR, four Monacors + waveguides around 130,-EUR total, the rest went for Baltic birch plywood and carpenter's work sawing it plus for 2-component wood glue, screws, cables, connectors, binding posts, passive components.
Last edited by PRTG; 31st May 2013 at 11:03 AM.
|31st May 2013, 11:25 AM
diyAudio Member
Join Date: Mar 2005
Location: Riga
Lost in measurements
When measuring frontal output (same room mic placed ~60cm from middle of speaker centers, gating 10ms) several measured flaws became obvoious:
- There is a serious response fluctuation of +-5dB at 300-500 Hz with whole midbass range slightly elevated (somehow overall pleasant effect at least in given room dimensions);
- There is a 4dB dip at 1-1.5kHz;
- There is a 2dB wide elevation at 1.5-3kHz;
- There is a gradual rolloff (~3dB/oct) from 3kHz to 14kHz and steeper further on with smoothly narrowing dispersion (second measurement was taken about 30 degrees of-axis).
So measured frontal response unevenness was up to at least 6dB with most pronounced being dip at 1-1.5kHz. It surely was blended with reflected signal due to close distance to walls, so what I was measuring was rather power response (loudspeaker direct + room), and also room modes coming into play with all associated interference plague. I didn't use dual gating for analysis so bass curve is very aproximate.
Things I did to overcome 1kHz dip:
- tried to extend HF driver frequency response below 1.5kHz with mods. It made 1kHz dip less pronounced, but as a result speaker somehow sounded less pleasant;
- tried putting WG on separate 40cm baffle to reduce the dip that way and hence also to reduce 2kHz peak from WG dimensions. It actually made overall sound even worse. Sound became less spacious, more lifeless and boring;
- tried putting HF speaker in same baffle without WG. Most annoying sound, all airiness was lost, become very forward and unbalanced;
- tried disconnecting rear HF speaker and replacing it with resistive equivalent. Killed some of the spaciousness. Sound became too forward instead of hanging somewhere around the loudspeaker. I was confused of what to do next and placed serious doubt on trusting my ears and brain and even taste for even frequency balance.
I was really confused for a time.
|31st May 2013, 11:36 AM
diyAudio Member
Join Date: Apr 2007
- try to suspend the tweeter(s) with rubber bands ( the black coated ones)
Just build a headframe; the two tweeters can be made as one unit by placing the magnets on a short piece of tube ( I think you already did that).
What you reported corresponds to what I hear when tweeters are dependant on the enclosure vibrations .
The rubber band(s) must be at nearly full lenght stretched: this allows the load to oscillate at subsonic frequency, which is the purpose of doing it.
|31st May 2013, 11:37 AM
diyAudio Member
Join Date: Mar 2005
Location: Riga
Striking back!
- First I mainly attributed initial setup pleasantness to correct phase or rather time alignment at crossover frequency which I tried to explain in different thread and received lots of good criticism and also food for thought but no remedy for my initial confusion. Adjusting frontal HF driver placement initially did gave me a great deal of satisfaction by easily finding best HF speaker time alignment in respect to LF within +-0.5cm spot. My ears were pleased, but as we saw measurements were far form ideal.
- I then came to thought that first-order passive filters could play some importance to better blending of sound between HF/LF drivers. First it seemed counter-intuitive as more 'blur' would be expected with wave source being smeared between two speakers that are at distance from each other. In my humble opinion if crossing of drivers is done as low as 1kHz brain suffers less from the "blur" as below 2kHz it quickly gets harder to locate the "dual" source and brain (probably!) just isn't looking for spatial cues it just "doesn't bother" and takes it "as is". Also close placement will help. A simple test to prove or deny this theory would be to blindly compare biamped 1-st and 4-th order active filters on the same speakers. Must be super easy with amps equipped with programmable DSP based filtering like Hypex.
- Some suggested that there is no difference for HF to be connected as dipole or bipole. My ear said the opposite. I measured that given waveguided HF speakers in bipole setup have brought weird acoustic artefacts like very pronounced side lobes showing up as high as at 4kHz. So yes, non-correletion is possible if crossing is done very high and very steep. But why do it? I found an answer at friends house - his listening room ir rather wide than long. Connecting his two pair of Mission bookshelf speakers as bipoles (one on top of the other, upper one turned facing rear wall). It increased pleasantness by giving more midrange reflections through some side lobing and from rear wall in otherwise very boring sounding room. So first conclusion towards optimal directivity here - the further the side walls are from speakers the more pleasant becomes wider dispersion towards sides. Bipole may be more preferable here compared to other types of speakers unless they have very hard toe-in angle (more than 45 degrees) which may not contribute to evenness of direct signal for obvious reasons. Still side lobes must follow particular pattern. More on this on final thoughts.
- While comparing HF dipole vs bipole dispersion I noticed that for the dipole there is a dispersion peak at 1kHz where it becomes almost omni-, while on other frequencies it gave very nice figure 8 dispersion pattern. It seemed that due to low-order passive filter tweeter phase at resonance bends at 45 degrees and back following its electric phase response to the sides. This happens as ridiculously low (but in my opinion necessary due aforementioned spatial cues ceasing below 1kHz) passive filter crossover frequency and series capacitor's impedance is preventing HF speaker resonance to be fully damped by low output impedance of the amplifier to be attenuated enough. SET amp having low damping factor probably made it even worse. Anyway I realized that I now have wide emphasis of 1kHz on side response while still having dip in frontal mix of measured direct and power response. And it still sounds quite right! I didn't know I cold love reflected 1kHz so much. If what I enjoy is more spatial cues from otherwise hard to locate frequency band, then perceptual brain feels probably not only unburdened but given delusional increased easiness of hearing. Like having a small hearing aid apparatus that increases resolution Field for more research here.
- Following suggestion by someone (was it SpeakerDave?) I bought and read book by Floyd Toole "Sound Reproduction: The Acoustics and Psycho-acoustics of Loudspeakers and Rooms" Being quite fresh (2008) it brought a lot of demystification and valuable info mostly based on reference scientific experiments, so I really recommend the book to anyone that likes to gain more knowledge. At first there was no clear answer for my "very small-room non-liner response pleasantness" case. After re-reading most enjoyable parts I found a couple of things that I missed initially:
-an experiment that shows that for majority of people most pleasant D/R ratio for in room listening is up to 1 which means that most people prefer blend of direct and reflected signal in 1:1 proportion provided that reflections are significantly delayed compared to direct signal. That may explain dipole/supercardioid associated phenomena and seemed to answer why dipole HF sound was so open and spacious;
- head-related transfer function (see HRTF) that was showing almost 20dB(!) perceived dip at 2kHz in anechoich chamber when listening is made at exactly same distance to stereo source speakers and similar 6-10dB dip when listening in moderately reflective environment so whole stereo listening is flawed, welcome multichannel or ambisonics (hey, but I have one speaker here, allright?);
- equal loudness diagrams that in critical and upper midrange almost resembled my measured response.. inverted! Here in section "Relevance to sound level measurement and noise measurement" we read "Although the*A-weighting*curve, in widespread use for*noise*measurement, is said to have been based on the 40-phon Fletcher–Munson curve, research in the 1960s demonstrated that determinations of equal-loudness made using pure tones are not directly relevant to our perception of noise.[3]*This is because the cochlea in our inner ear analyzes sounds in terms of spectral content, each "hair-cell" responding to a narrow band of frequencies known as a*critical band. The high-frequency bands are wider in absolute terms than the low frequency bands, and therefore "collect" proportionately more power from a noise source. However, when more than one critical band is stimulated, the outputs of the various bands are summed by the brain to produce an impression of loudness. For these reasons Equal-loudness curves derived using noise bands show an upwards tilt above 1*kHz and a downward tilt below 1*kHz [emphasis mine] when compared to the curves derived using pure tones." My cautious conclusion here is: when reflected signal meets direct signal in comparable proportions it should be considered as direct signal mixed with spatially added (though pleasant) noise. That means either correcting both direct and reflected or just reflected signal response (better as it doesn't ruin direct signal response). And it must be corrected differently at different reproduced lodness levels and different D/R ratios. To get exact correction pattern as afunction of room size more research on that topic coud be handy. Still I believe it can be put as simply as - attenuate high frequencies in tight rooms slightly above 1kHz and raise midbass under 1kHz. With midbass baffles wider than 40cm (baffle step frequency lowered) combined with controlled directivity horns or waveguides (smoothly narrowing dispersion as a function of frequency) it all may come out very natural. Which is very close to what I have measured in my tiny room at quiet to moderate listening levels.
- My other guess is that increasing playback volume in small room may require even more HF attenuation. My observation is that in very small room any speaker with increasing loudness becomes too harsh sooner, perhaps cone breakups and THD/IMD are only half of the problem other significant half being unpleasant tonal balance at midrange when given loudness and reflection power being close to equal to that of direct signal while recognition capability of resulting at such "noise" level declining. This thought actually came to me only now while writing. One way to test it would be to bring my speaker to a bigger room and listen to it there. If strong room size dependence to mid-high attenuation proves to be true, then room-size dependent loudness correction must be adopted as an industry standard, all contemporary multimedia file standards must be updated to include mandatory RMS (average loudness) tag to get correction applied in correct amount, and also some calibration towards the room size and speaker sensitivity must be done for each loudness corrector in room it is supposed to be operational. Not an easy task
|31st May 2013, 12:20 PM
diyAudio Member
Join Date: Mar 2005
Location: Riga
Getting closer to the source
- At this point it came to me that same 1kHz dispersion stuff is happening downwards in LF/HF blending zone. So by reducing zobel resistor to 2Ohms (sorry, tubes!) and hence shifting electrical and acoustical phase of LF driver towards better blending with frontal tweeter with already shifted phase response due undamped resonance I managed to eliminate dip at 1kHz. Was it better? Well, maybe slightly, but by sacrificing some significant other parts of tonal balance. So I switched back. I was tempted to do correction more politely from opposite side by adding LCR impedance correction circuit in parallel to HF units, but my second kid was born at that time and suddenly spare time was available no more.
- I was still curious about elevation at 1.5-3kHz and possible relation to listening preference. So I re-read some of Linkwitz papers and dropped a mail to Floyd Toole with a question: what if slight emphasis around 2kHz could compensate to ill effects related to HRTF and hence give more balanced perception and elevated listening pleasure. He promptly and kindly responded (great guy, isn't he?) that (as stated in his book) HRTF associated stereo flaw ans associated bluntness of perceived sound is audible only in very narrow sweet spot (perhaps +-1cm of a head movement or even less). He was probably right, so I dropped this possible explanation for pleasantness from slightly elevated 1.5-3kHz as not related and it is still unresolved for me. The things I can think of is that reflection pattern in ordinary room may be absorbing this range more than other bands and even more in a well damped environment that breaks evenness of otherwise close-to-even power response. Or, perhaps our brain is just happy receiving slightly more pronounced spatial cues in this very sensitive midrange region.
- I also tried connecting simple gainclone chip-amp to try non-valve version of the same speaker. Increase in bass 'tightness' (less dip) at resonant frequency due better damping was noticeable. Unfortnately 'bigness' of the midrange and highs collapsed, mids become much less of a sweet honypot. Sound now was coming from the speakers not some ephemera cloud surrounding it. I've heard same differences with other speakers, so no big surprises here, still somewhat disappointing.
- While being most of the time in a constant hurry serving one or both toddlers and keeping up with everyday business I came to thought that I must try Econowave to get better blending with LF driver and more even power response. So I ordered a pair of 18sound XT1086 horns and BMC BMS 4538-8 compression drivers. I attenuated them to match the level of LFs and used same 1-st order filter. Judging by how attached horn smoothed jagged impendance curve of naked BMC driver i guessed they could be a good match. Then I tried connecting it as a substitute of frontal Monacors.. and didn't like it much. Nearfield listening pleasure was gone. Narrower vertical dispersion was not singing happily towards my face as did WG-300 which is a round one and smaller size. While delivering outstanding dynamics previous spatialness and ease were somewhat decreased, sound becoming focused as highs were more forward. Conlusion - deeper and larger horns are better suited for large rooms, mid- to far-field listening. For small rooms and near- to mid-field shallow round waveguide seems to be much better companion.
- Meanwhile I found something worth by peeking into this focused man's thread Provided small image is taken from Zwiker's and Fastl's book "Psychoacoustics: facts and models". So I'm attaching the picture that gave me another good thinking before immersing into lately habitual irregular night's sleep.
What we can see here is suggested equalization for in-room diffuse sound-field defined as a function of open-air response. Quite resembling my measured near-field response which is most likely sum of direct and reflected signals except the difference at the very top end and elevated midbass in my case, which I find rather nice and full than annoying.
- To get more details on picture I ordered the Second edition of the book from ebay second-hand. It came as written-off from Munich university after probably being replaced by Third edition. I didn't know I'd be visiting the Munich area quite soon. Seems that some items in life are working like magnets to some important places, at least for me
Unfortunately there wasn't much of explanation of this EQ curve except analysis of loudness curves which were just about inverse depending of the loudness level. My conclusion from this picture is that for in-room listening for frontally lineary responding speaker the best dispersion pattern curve would follow this suggested equalization line, or directivity index curve following just inverted version of it. From my measurements seems that I was just lucky to stumble upon the optimal combination of different aspects while trying to build a rather non-conventional design and to get very close to this.
- Unless going for 8-channel multi-amping with correcting EQs that will match the line to rear speakers amped separately in dipoles or bipoles (I'd like to hear that!) this seems to be possible to also accomplish acoustically, still with design variations for different room sizes. For example my guess is that Earl Geddes highly praised speakers are getting to this optimally diffused sound-field EQ by combining wider toe-in with controlled dispersion, so some of direct signal is bounced off opposite wall, perhaps giving required diffused sound field elevation at 2-3kHz and perhaps even within the right amount of attenuation. Copied-by-many Econowave speaker also may be complementary to this curve to some degree given the room is big enough. It would be moderately easy to measure if you have an-echoic chamber or ground-plane measurement setup. Unfortunately not many can have access to that kind of measurement rig.
- One more thing: according to the end part of correction curve line we need to elevate 10-20kHz range in that same diffuse sound-field. Also if room is treated or stuffed with furniture covered with fabric we can expect more losses here (I always preferred leather in the car seating as better complementing with the HF sound so EQ compensation must be perhaps twice as high as shown. This intuitively asks for extended durability of such speakers or having very small horns (~1.5cm in diameter), or combination of both. I tried this type of sound-field correction by just adding small rear-and-upwards facing Vifa tweeters with small enough series capacitor to my friend's monopole Mission speakers. The improvement on spatial presentation was audible but the feeling was like "we wanted more of it!". So this is something yet to be done - a nice and inexpensive way to upgrade any existing system to get better sound inside the room.
- I remember myself reading somewhere at Linkwitz's site that humans tend to prefer high frequencies to be coming from slightly above ear level (perhaps genetically encoded sentiment from our ancestors for bird's noises in primordial forest?). I totally agree with that. Added rear tweeter can help with that through ceiling and back wall reflections if elevation of speakers isn't possible for some reason.
- Out of curiosity I also ordered and read the book "Get better sound" by Jim Smith. Being almost totally opposite character to Floyd Toole, Jim is rather pragmatic experimentalist, not a scientist. Several times in the book you will read something like "I don't know why, but it works". If Floyd's book was read before this one you'll be able to answer to most of the questions except some doubtful stuff like "when pulling amp slightly out of the rack the sound gets a bit warmer". If you can tolerate and skip such observations (there aren't very many of this type), the book give indeed some good advice on how to set up your favorite listening spot. Also it uncovers some low-level signal resolution related advantages of analog over digital recording. Best advice from the book regarding dispersion imo was to put some small trees near walls on both sides of the room halfway to speakers to effectively scatter first sidewall reflection. Usage of scattering panels was encouraged also by Toole with coverage of some of the vendors and panel types. Generally this just helps to make diffuse sound-field even more diffuse and enjoyable
|31st May 2013, 12:38 PM
diyAudio Member
Join Date: Mar 2005
Location: Riga
Munich High-End: notes from the field
My dear kids just had grown-up to the age when they can be left with grandpas-mas and I decided to finally calibrate my inner hearing against the sound coming from "reference grade" systems. So I went to Munich High-End show this year. One and-a-half days at the show I was running through the halls but mostly stopping for awhile in dedicated listening rooms in so called "Atrium" zones and making notes of 107 short auditions in total.
- First day was mostly disappointing at the beginning, including nearly unbearable sound including some of renowned brands I won't mention here for ethical reasons. Munich MOC trade fair complex isn't providing probably the best environment for sound judgement, but even considering that only 1/10 of the rooms were as Jim Smith would probably say "carefully prepared for auditioning". Lack of dispersers and scatterers made lots of systems sound really unbalanced in a given room.
- While noting also subbass level (aka bottom end) I accounted that it is too much room-mode dependent and given the unequal conditions among vendors I didn't take it into account for final judgement.
- Subjective criteria I used for judgement were presence or lack of:
○ Airiness, openness of the sound (matched time coherence in mid- and HF range);
○ Clarity (low THD/IMD%, good micro-dynamics);
○ Extended frequency range (smooth response with good top HF and bottom LF);
○ Lack of artifacts (lack of audible resonances within whole spectrum except subbass);
○ Large, panoramic soundstage (good dispersion, pleasant interaction with the room);
○ Macro dynamics (clarity and balance at being loud).
- Now we see that three out of six criteria are very room and baffle-design dependent especially the last one. So my ratings are very approximate.
- Besides some important stuff that i missed for different reasons on 10 point scale I did gave 21 systems rating of 7 as sounding "great", 10 systems with 8 as "especially pleasant sounding" and only one system with 9 out of 10. The latter is MBL's flagship model 101 Extreme with loads of amp power, huge dedicated stereo subs, and guess what - auditioning room so densily stuffed with palm trees that it smelled like a tropical house in some Bothanic garden. Trees were all around the walls and also in lines in the middle of the room behind listening seats. Perhaps this is how renowned true omni- speaker manufacturer deals with the Zwicker's suggested diffusion EQ. The sound was a bit metallic so I couldn't really give 10, every other aspect was flawless.
- All the rest ratings below 7 had either one on more clearly audible flaws within the frequency range of lower midbass to highest heights and I didn't spend much of the time waiting for more "revealing" record to come.
- So here come 10 systems that scored at least 8/10 plus 1 pair of very pleasant sounding headphones:
Genelec 8260A
Kawero Vivace
Living Voice Vox Olympian
mbl 116F
Lansche Audio (model?)
Rockport Technologies Altair II
T+A Solitaire
TOTEM Acoustic Element
Tune Audio Anima
ULTRASONE Edition 8 (headphones)
Wilson Audio Alexia
- And also 21 of 7/10 (which is also a really good mark by all means with just one or too slightly audible flaws).
ADAM Artist 5
Amphion Either Helium 520Cs placed vertically or new MTM-type model
ASW Magadis
AUDIO PHYSIC Avantera
AURALiC DAC, preamp, amp, atskaņo uz Audeze
Ayon Audio Blackfire XS
Canton ???
Crystal Cable Arabesque
DLS New round baffle on-wall model w on-wall sub
Dynaudio ???
ELAC MicroMagic
Estelon ???
Göbel High End Epoque
Kaiser Akustik ??
Kharma Exquisite
Lawrence Audio Sonic Art
Magnat Quantum Signature
Mc Intosh Home Theater
Soundkaos Wave 40
TRIANGLE Magellan Cello II
Zingali Acoustics Client Name 1.5 Evo
- Some models weren't familiar for me, sorry about that.
- If you search for images of these speakers it is amazing to see so different baffles and drivers altogether having very pleasant sound in their own very special way. One thing that encourages me regarding our topic - those having the best dispersion were either using waveguided dome tweeters, like Amphions (being so outstanding in spatial aspects that I felt almost like home or waveguided AMT/RAAL/other planar speakers. WG for Amphions seemed identically shaped as WG-300 and baffle witdth was exactly same as WGs or just a bit wider: 17-18cm. I basically not a fan of MTM but as the speakers were lifted slightly above ear level the panorama was just right, wide and spacious.
- So whats so magic about 17cm baffle width? My guess is that it gives us pleasant 1kHz side-wise elevation through baffle step. 17cm = F3 of 680Hz so above that goes elevation up to 2-3kHz that gives it some dip in front and most probably increased 0.6-1.5kHz output to the sides just like on Zwicker's attenuation curve. Yet to be confirmed. Many of the best speakers in the show had baffles right this wide.
- By the way, what's the baffle width of upper midrange speaker of Linkwitz's LX521 and NaO Note RSII?
- I hope you found some of the information useful.
Jānis Irbe,
Riga, Latvia
Last edited by PRTG; 31st May 2013 at 12:43 PM.
|31st May 2013, 01:22 PM
diyAudio Member
Join Date: Jan 2008
Are you measuring this in room described in #1?
Posted results are almost entirely do to room interactions
|31st May 2013, 05:15 PM
diyAudio Member
Join Date: Dec 2004
Location: Novi, Michigan
Keep the discussion based in non-subjective facts and you might get somewhere. Lead off and follow through with subjectivism and all is doomed.
Earl Geddes Gedlee Website
|31st May 2013, 05:28 PM
diyAudio Member
Join Date: Aug 2008
Location: Black Forest
Hi Jānis,
I haven't read everything here yet. But you may find my suggestion about how to eq. wide dispersion speakers interesting (not sure if you have seen it before).
Interim Conclusions
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The imaging technology systems will screen for explosives and other threats at security checkpoints
L-3 Communications will supply the Transportation Security Administration with advanced screening technology under an indefinite-delivery, indefinite-quantity contract worth $164.7 million.
The award calls for L-3 to supply the agency with millimeter wave (MMW) advanced imaging technology systems to screen for explosives and other threats at security checkpoints.
This contract makes L-3 eligible for future delivery orders for its ProVision MMW system, L-3 said in a statement today.
The technology used in the ProVision system utilizes safe, harmless radio waves to detect threats that might be hidden under a passenger's clothing. Threat substances made from a wide variety of materials can be found using ProVision, including both metallic and non-metallic threat items, according to the statement.
L-3's ProVision offers multiple levels of privacy protection that can be customized to support customer-specific operational procedures.
Security officials see a 3-D black and white silhouette that makes it virtually impossible to determine the identity of the scanned individual. Also, images are viewed in remote locations separate from the checkpoint, so that analysts cannot see the passenger being scanned. Privacy is further ensured with options that allow for blurring of facial features, the statement said.
More than 200 ProVision systems are deployed worldwide to protect critical airports and other facilities, including federal and state courthouses, correctional institutions, embassies and border crossings.
L-3 Communications, of New York City, ranks No. 8 on Washington Technology's 2009 Top 100 list of the largest federal government prime contractors.
About the Author
David Hubler is the former print managing editor for GCN and senior editor for Washington Technology. He is freelance writer living in Annandale, Va.
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Contact Dell Financial Services
For contact information for Dell Financial Services, refer to the following link:
Contact Us - Dell Financial Services
Information about My Dell Preferred Account
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Attorneys in 1st case under state statute ask if 3 anti-NATO activists are terrorists or goofs
CHICAGO – Three activist defendants were portrayed by prosecutors in Tuesday's opening statements for the first trial under Illinois terrorism statutes as serious terrorist wannabes, and their defense team painted them as alcohol-addled mopes who, at worst, contemplated an act of vandalism.
The contrasting portraits of the men, who are accused of plotting Molotov cocktail attacks at the 2012 NATO summit in Chicago, came at the start of what is seen as a major test case for Illinois' state terrorism laws. Nationally, most terrorism cases are prosecuted in federal court.
The opening statements in the Cook County courtroom were dominated by one question: whether Brian Church, 22, of Fort Lauderdale, Fla.; Jared Chase, 29, of Keene, N.H.; and Brent Vincent Betterly, 25, of Oakland Park, Fla., qualified as terrorists.
Prosecutor Matthew Thruns told jurors there was no doubt.
He walked up to within feet of the defendants and pointed an accusatory finger at each, saying the disgruntled activists had plotted to carry out deadly attacks, including at President Barack Obama's campaign headquarters, Mayor Rahm Emanuel's home and police stations.
"(Fire) was going to be their iconic image ... that would strike terror on a world stage," Thruns said, his voice rising. "These defendants wanted to set fire to a system they felt cheated by."
Church, Chase and Betterly have pleaded not guilty to conspiracy to commit terrorism and other charges. They were arrested days before the summit got under way after an undercover police officer infiltrated their inner circle.
As they headed to Chicago from Florida weeks earlier, they had packed their car with gas masks, bows and arrows and even a throwing star — hiding some of the gear in a guitar case, Thruns said.
"They were ready for war," he said.
But defense attorneys balked at the idea their clients could be compared to bona fide terrorists.
"If they are terrorists, we can all sleep at night," said Thomas Durkin, Chase's lawyer. "Do you know any terrorist who marches in parades?" Later, he called the young men "three goofs."
Church's lawyer, Sarah Gelsomino, described her client as naive and prone to wild boasts. During the alleged plotting, she said, he was "nearly constantly drunk out of his mind."
It was the undercover officers who steered the activists into filling a half-dozen beer bottles with gasoline, she said.
"Chatter, talk and four bottles with a little gas in them does not make a terrorist," she told jurors.
The notion that Molotov cocktails could create the havoc prosecutors described, Durkin said, was "hogwash." He said bottles filled with flammable liquid have been standard fare at protests in Greece.
"Molotov cocktails aren't any more dangerous on many levels than firecrackers," he said.
Durkin also blasted the state's attorney's office for what he said had been its eagerness to employ the ominous-sounding terrorism statute.
"This was a charge looking for a boogeyman," he said.
Gelsomino, too, said there were bigger issues at stake in the Chicago trial.
"It's a case about who the state can brand a terrorist ... the most damning and prejudicial accusation of all," she said.
All three defendants have been held in jail since their arrests, unable to raise $1.5 million in bail. If convicted, each could be sentenced to decades in prison.
Follow Michael Tarm at www.twitter.com/mtarm


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Wiz Khalifa: DayToday Season 4 Ep. 8 (Final Episode)
"The final episode of Everyones favorite daytoday series. Its been a fun ride, but new things are in store for us taylors. Don't try to steal my name though you stupid bitch. "
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Sri Lanka abuzz ahead of World T20 final against West Indies
Sri Lanka's players will trigger a nationwide party if they can overcome their flamboyant opposition in a clash that starts at 7.00 pm in the capital Colombo. Second coming | Match reckonerindia Updated: Oct 07, 2012 13:37 IST
Millions of Sri Lankans on Sunday waited with stomach-churning anticipation for the country's biggest-ever home cricket match when their team take on the West Indies in the World Twenty20 final.
Sri Lanka's players will trigger a nationwide party if they can overcome their flamboyant opposition in a clash that starts at 7.00 pm in the capital Colombo.
A sell-out crowd of 35,000 at the Premadasa stadium will offer boisterous support as Mahela Jayawardene's team attempt to reverse their fortunes after losing three finals in major tournaments since 2007.
Standing in the way is the destructive West Indies batting led by opener Chris Gayle, who crushed Australia in Friday's semi-final with a scintillating 75 off 41 balls.
"May this dream come true for Lanka," read the headline in the local Sunday Times. "Call it the battle of the titans or whatever you like, but today's final... will be a blockbuster," it predicted.Large crowds were expected at cricket clubs where giant screens have been erected, while many families planned to gather around televisions at home to watch their national heroes.
Local media reported tickets for the finals priced at 50 US cents were fetching 75 dollars.
"We will have a house party and watch the match," Sandamale Wickremasekera, an accounts clerk at a private radio station, told AFP. "We were disappointed at the last World Cup, but this time we should win."
Ahead of the match, Sri Lanka appeared quietly confident they could win their first major title since the 1996 triumph in the 50-over World Cup.
"This is definitely the biggest game we have staged," captain Jayawardene said. "It's been a great couple of weeks for the entire country."
"The expectations from our fans are the same as they were at the start of the tournament. They wanted us to reach the final even then. And we must now win it for them."
Sri Lanka made the final of two successive World Cups in 2007 and 2011, and also the World Twenty20 in 2009, but lost each game.
Jayawardene said his team faced a new scenario later on Sunday. "Now we are playing in the Premadasa, so we will approach it differently. We have to adapt. It is all about handling tough situations better," he said.
Sri Lanka defeated the West Indies by nine wickets in a practice game before the tournament and again by the same margin in the Super Eights stage, but Gayle is confident of ruining the hosts' party plans.
"We're definitely going to rock against Sri Lanka," the swashbuckling Jamaican left-hander said. "We know what to expect -- the atmosphere, the noise and everything else.
"We are definitely going to win this trophy here. I just feel confident about it. We are up against world class players in the Sri Lanka team, but it's going to be good fun."
The classy Sri Lankans have lost just one of their six games in the tournament so far: a seven-overs-a-side rain-affected game against South Africa in the preliminary league.
Jayawardene has himself led from the front with 210 runs, the fourth highest run-maker in the tournament behind Australian Shane Watson (249), Gayle (219) and Brendon McCullum of New Zealand (212).
Sri Lanka will be further boosted by the match-winning form of unorthodox spinner Ajantha Mendis, who shares the top spot among bowlers with Watson at 11 wickets apiece, and sling-arm fast bowler Lasith Malinga, who has eight scalps.Conditions in Colombo were dry during the day, with the threat of some evening showers.
Read more:
Power versus poise in battle of Isles
It will be some atmosphere at the Premadasa Stadium on Sunday night for Sri Lanka's first World Cup final at home. The stands will be bursting at its seams and 35,000 spectators will be baying in unison. It's the biggest stage the team have ever played, but the local heroes will go into the battle certain that whatever anyone does, the biggest applause will be reserved for the one who gets the wicket of Chris Gayle. Read more
Jayawardene will make it tough for rampant Gayle
It should be a good contest between two teams which have come through the grind. It's amazing how a small island like Sri Lanka has produced quality cricketers. They have qualified for four World Cup finals since 2007, which speaks volumes of the players' class, and a lot of credit should be given to Jayawar-dene and Sangakkara. They have carried Sri Lankan cricket like big brothers in this period. Read more
First Published: Oct 07, 2012 12:53 IST


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Evelyn Pringle April 16, 2007
Tens of millions of prescriptions have been written for Johnson & Johnson's Ortho Evra birth control patch since it arrived on the market in 2002, and medical experts say the patch has harmed thousands of young women of childbearing age.
In September 2006, the FDA warned that use of the patch, made by the Ortho-McNeil division of J&J, increases the risk of blood clots, which can lead to heart attack and stroke.
Because the patch releases hormones directly into the blood stream, medical experts say, a much higher concentration of hormones enters the body than with birth control pills. A November 2005, FDA advisory reported that patch users were exposed to about 60% more estrogen than women on the pill.
A recent study in the February 2007, journal, Obstetrics and Gynecology, of 49,000 women who used the Ortho patch, and 202,000 who used oral contraceptives, found that blood clots or "venous thromboembolism" occurred in patch users at a rate of 2.2 times higher than with women on the pill.
Legal experts says proving causation in these cases will be easy because blood clots in young women are almost unheard of. No doubt due to the recognition of this fact, when the first lawsuits were filed, J&J quickly began settling cases out of court for substantial sums of money, trying to keep a lid on the news that women were being injured by the patch.
J&J has already settled lawsuits in state courts in New Jersey, Texas, and California, and federal courts in North Carolina and Pennsylvania, according to Bloomberg on April 2, 2007.
Texas attorney, Ray Chester, told Bloomberg that one settlement involved a 40-year-old woman with 2 children, who had a massive stroke after only 12 days on the patch and is now a quadriplegic with brain damage and requires around the clock medical care.
However, as the number of lawsuits multiplied, that strategy of quietly settling out of court could not continue for obvious reasons. J&J's Annual Report filed with the SEC in February 2007, states that, as of December 31, 2006, "there were approximately 1,500 claimants who have filed lawsuits or made claims regarding injuries allegedly due to ORTHO EVRA."
Documents revealed in litigation, prove that J&J knew about the high rate of blood clots because they show the company had been analyzing the FDA's reports on injuries and deaths in women using the patch, and had even compiled charts showing the higher rates of clots and deaths when compared to women taking birth-control pills.
One memo from 2003, reveals that the company refused to conduct a study to compare the rate of adverse events with the patch to its Ortho-Cyclen pill because there was "too high a chance that study may not produce a positive result for Evra" and a "risk that Ortho Evra may be the same or worse than Ortho-Cyclen."
Newly released documents show that, instead of warning consumers and prescribing physicians about the clot problems, Johnson & Johnson has been doing everything in its power to stop the negative information about the patch from becoming public.
Documents unsealed this month by Superior Court Judge, Bryan Garruto, in a New Jersey state court proceeding involving more than 300 lawsuits, reveal that J&J bought up dozens of internet domain names related to the Ortho patch in an attempt to stop negative information from appearing on the internet.
By using the standard trick of claiming the documents contained trade secrets, J&J had previously obtained a court order to keep them sealed so the public would not learn about the extent of the company's damage control efforts.
But in granting a motion by the plaintiffs' attorneys to unseal the documents, Judge Garruto said they were not entitled to a protective order because the information did not constitute trade secrets that, if revealed, would benefit J&J's competitors.
One document released calls for, "Defensive actions to minimize impact of negative presence," to include buying internet domain names, monitoring blogs and purchasing the top key words related to the patch that would be picked up by Google and Yahoo search engines.
Apparently, drug companies do this on a regular basis. According to Kent Jarrell, a spokesman for J&J, quoted by Bloomberg News on April 2, 2007: "The purchase of the domain names is a standard and accepted business practice for companies that are trying to prevent product disparagement and to safeguard the defendant's reputation."
Legal experts view the situation differently. According to Attorney, Derek Braslow, of the Conshohocken, Pennsylvania firm of Pogust & Braslow, "While J&J's purchase of key internet search terms and domain names does not prove that the Ortho patch causes injuries," he says, "J&J's conduct, like the conduct of most drug companies, does show an intentional disregard for the victims of its deadly drug."
He does not find the drug maker's conduct surprising. "J&J has only taken the next step in the natural evolution of marketing," Mr Braslow explains, "promote the drug at all costs during the life of the patent but eliminate all marketing and promotion after the money has been made and the victims start seeking answers and advocacy."
"Purchasing the domain names has nothing to do with the merits of the litigation," he says, "it has everything to do with damage control, protecting their drug at all costs and preventing victims from seeking and finding justice."
After lives have been lost and families devastated as a result of using the patch, he states, the company is attempting to prevent the victims from finding legal counsel. "Instead of coming forward with the truth behind the patch," he notes, "the company has gone to extraordinary measures to stop victims from finding attorneys to represent them."
Attorney, Ted Chabasinski, who recently worked on a case involving the release of damaging Zyprexa documents that Eli Lilly had successfully kept hidden with a court order while settling out of court with about 26,000 litigants, agrees that J&J's conduct is standard procedure when it comes to concealing damaging information about pharmaceutical products.
"What Johnson and Johnson is doing," he says, "just reflects drug company practices in general."
"None of them want the public to know that their products are dangerous and often ineffective as well," Mr Chabasinski notes.
"America must wake up soon," he warns, "to what these greedy corporations are doing to our health."
"We need politicians," he states, "who will stand up to the drug companies, and judges who will recognize that when drug company executives approve hiding the deathly effects of their drugs, thus killing thousands of people, they should be put in prison."
"It isn't enough," he advises, "to make the companies pay damages."
"Nothing will stop these practices," he warns, "except holding the people who run these corporations personally responsible for their criminal behavior."
According to FDA records obtained by the Associated Press with a FOIA request in 2005, in one 18-month period, there were 9,116 adverse events reported by women using the patch, a rate 7 times higher than women taking oral contraceptives.
A factor that must always be considered when assessing the number of people who may have been harmed by a product is that the FDA estimates that only 1% to 10% of adverse events are ever reported, which means the number of women harmed by the patch is definitely much higher. In 2005 alone, doctors wrote more than 9.4 million prescriptions for the patch, according to the pharmaceutical industry-tracking firm, IMS Health.
The review of records by the Associated Press revealed that the FDA knew that blood clots were at least 3 times more common with the patch before the device was approved.
The records show that in 2000, FDA doctors reviewing J&J's clinical trials warned that clots could be a problem with the patch after finding that 2 women were treated for serious conditions where blood clots had traveled to their lungs.
One reviewer said, "The label should clearly reflect this reviewer's safety concern about a potential increased risk." But in the end, the label did not contain the warning, and there was no requirement for follow-up studies other than ordinary reviews of voluntary reports.


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January 25, 2010
Sewing with kids :: PJ's!
We had a nice and almost normal weekend. The girls had busy schedules on Saturday, but on Sunday we just stayed home and relaxed, and M. and I found time for some sewing as well.
With the holidays and all that happened after, we didn't do any sewing since the tote bag. She'd told me a couple of times already the next thing she wanted to sew was something she could wear. That's when I came up with the idea of making some PJ pants. Not too difficult, I thought, and no big deal if it didn't work out. Only problem: I didn't have a pattern - very annoying on a Sunday afternoon. We did have some summer drawstring pants, however, which once belonged to M. but now are more of little H.'s size. I traced those and added a couple of inches here and there, and hoped for the best. I found some really nice cotton fabric in my stash, with a delicate flower print which M. happened to like too. I cut the fabric for her and pinned the pieces together. And, somehow, the pattern worked out perfectly. Don't ask me how I did it, but it was right to the very last millimeter. M. did all the sewing on her little machine - she even zig-zagged the edges to prevent the fabric from fraying. I showed her a little trick for sewing the two legs together. She sort of panicked when she saw how wide the pants were at the waist - that was before inserting the elastic, however. Once the elastic was in, they had the right fit. I added one final little detail for her: a faux drawstring at the front.
Et voilà!... a mere two hours later, I was able to take this shot: a proud M. in her new PJ's...
Perfect! Just perfect! Don't you think?!
11 comments:
magnifique, joli, je ne trouve pas d'autres mots! et dire que c'est une petite fille de 9 ans qui vient de le réalisser, je suis très fière de ma petite-fille! bravo M.
- January 25, 2010 at 11:36 PM
- Miss Sews-it-all said...
Yes, I do think those are perfect pj's! She did a great job sewing.
- January 26, 2010 at 3:36 AM
- Nö said...
Yes, perfect is the right word! They look great and you both made a wonderful team.
- January 26, 2010 at 10:54 AM
- britt said...
absolutely wonderful!!!!
- January 26, 2010 at 3:53 PM
- virginia said...
is the trick placing one completed pant leg inside the other, and then joining?
can't remember who showed me...
i'm inspired! lovely jammie pants.
- January 26, 2010 at 4:58 PM
- cindy said...
oh wow, she's fantastic! i need a pair as my attempt went south. one thing i didn't know what the trick, which i think virginia mentioned. bravo m!
- January 27, 2010 at 12:14 AM
- Pascale said...
My little girl loved your comments on her favorite PJ's ever!
To Virginia and Cindy: you guessed it right. The little trick consists in sewing both legs separately, then turn one leg inside out and slip it inside the other leg, right sides facing, and such that the inner leg seams of both legs face each other (and consequently, so will the outer leg seams). Next, you pin and then stitch the two together (but leave the top open!). Pull the leg out of the other again and done.
- January 28, 2010 at 12:26 PM
- blue moss said...
Sooooo perfect.....the pjs and the pic of your beautiful girl
- January 29, 2010 at 2:13 PM
- karen said...
You're both very talented! Sweet pj pants and lovely photo. So glad you're all feeling better and filled with creative energy. Thank you for sharing the pretty colors and projects, especially during the frosty winter.
- January 30, 2010 at 2:53 AM
- RosaMaría said...
beautiful photo! and great pjs!!
- February 2, 2010 at 5:44 PM
What great PJs! Your girl did a great job of it. (And you, too!) I am looking forward to doing some of this kind of thing when my girl's old enough (and the toddler is out of the house for the day!)
- March 2, 2010 at 1:00 AM


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Reviewed By James P (Willowick, OH) Reviewed for a 2004 Dodge Ram —12/29/2015 4:06 PM
Replaced stock coils and 2" lift with a set of 2.5" over supercoils on my 2004 Dodge 3500. They raised the truck another inch, that tells how much the stocks were sagging. I also installed Spohn dual shock towers. All this gave me what I was looking for. A little stiff empty but I'm rarely that. Even through the holidays Auto Anything delivered a great product quickly.


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April 29, 2014
About 9.2 million passengers came through the airport in 2013, up 7.1 percent from 2012. Three other major cities — Houston and Austin, Texas, and San Jose, Calif. — came close to matching New Orleans with about 6 percent growth, according to rankings compiled by Airline Weekly magazine using data from the Airports Council International.
The new ranking comes just a few days after Spirit Airlines announced it would add nonstop flights from New Orleans to Fort Lauderdale, Fla., and Houston. It also comes with the city poised to begin work on a major airport expansion that officials hope will lower costs for the airlines and lure more flights, particularly new international routes.
Iftikhar Ahmad, who has served as aviation director in New Orleans since 2010, credited his cost-cutting efforts at the airport, as well as the city's overall growth in the past few years, with lifting the number of passengers.
"Airports cannot create demand. It's the community that creates demand," Ahmad said. "And the New Orleans region is going through a major renaissance. We have twice the number of restaurants we used to have pre-Katrina. The hotel industry is booming. The conventions are coming back. So the outlook is really good."
Looking ahead, Ahmad sounded a slightly more cautious note. He said first-quarter passenger numbers show growth of about 4.1 percent compared with the same three months of 2013, with March up about 8.3 percent. He would not predict whether growth in New Orleans might again top the list of U.S. cities in 2014.
In the long term, New Orleans is counting on a new passenger terminal to help bring in more flights.
The $650 million project is slated to be completed in 2018 for the city's tricentennial. Officials expect the new building will be cheaper to operate than the existing structure, and the savings can be passed along to the airlines. At the same time, more retail space should bring in more revenue, and linked terminals should allow for more connecting flights.
For now, New Orleans officials continue to pitch the airlines on adding new routes based on passenger growth over the past few years and steps the airport has already taken to bring down costs. Ahmad described a kind of "speed dating" routine at conferences he attends around the country: 15-minute opportunities to meet with various airlines and try to sell them on the logic of adding new flights to and from the city.
One important way to make that logic work is to bring down how much the airport has to charge airlines for each passenger. In 2013, that figure stood at $8.41 at Louis Armstrong International, down from $10.20 in 2009. Ahmad credits that drop with spurring the new Spirit Airlines flights to Florida and Texas. Alaska Airlines also has announced it will start a new nonstop flight between New Orleans and Seattle this year.
But the big push now is for more international flights. Right now, Louis Armstrong has international routes only to Cancun, Mexico, Montego Bay, Jamaica and Toronto, Canada. Ahmad said he is pushing for a direct flight to London, but he wouldn't predict whether there will be any more announcements this year.
"That is hard to predict," he said. "But we certainly will not back down. We have no plans to back away from it. We want the international tourists."
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