Dynatech PSC 224 High Precision Stereo 3-way crossover with Subwoofer Output Size:PSC 224   High-Precision Stereo 2-Way/Mono 3-Way Crossover with Subwoofer Output Professional stereo 2-way/mono 3-way crossover featuring state-of-the-art Linkwitz-Riley filters with 24 dB/octave Additional subwoofer output with independent Frequency control Absolutely flat summed amplitude response, zero phase difference Individual output Gain controls for all bands Switchable 40 Hz Low cut filter on each input for low-frequency driver protection Servo-balanced and gold-plated XLR connectors for all inputs and outputs Ultra-high precision potentiometers for ultimate accuracy and repeatability Illuminated switches for secure operation in dark stage environments Shielded toroidal mains transformer for minimal noise interference High-quality components and exceptionally rugged construction ensure long life The PSC-234 2-way stereo/3-way mono crossover features absolute precision, state-of-the-art circuitry, with superior-grade components, ultra low-noise op amps and balanced inputs and outputs. Additionally, the PSC-234 provides an independently adjustable subwoofer output, effectively providing an extra low-frequency band, which is adjustable from 10 Hz to 235 Hz. Sound Quality When a sound system is tuned properly, it becomes powerful, balanced and efficient. Bass content is punchy and tight, with vocals and instruments that are rich, crisp and well defined. The PSC-234 crossover's accurate signal processing protects critical loudspeaker components and improves overall system efficiency. What's a Crossover? Chances are if you're reading this, you already know what a crossover is and you know that you need one. But if you are new to multi-way PA systems, here is a brief overview. Loudspeakers (which we call transducers) convert electrical signals into sound waves. And no matter how well a transducer is designed and made, it simply cannot reproduce the entire audio spectrum all by itself.