system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 How is it that if you put a piece of paper really close to loudspeakers, the speakers will push away the paper at high frequencies but suck it in at low ones?

Edit: a lot of people answering have gone off of the topic of the difference of the frequencies of the speakers' output and instead explained different sized speakers and other a bit out of context rattling. I appreciate all answers but if anyone really knows why different frequencies create different pulling and pushing, feel free to comment.

Edit 2: comments are suggesting Bernoulli's principle to the pulling of the paper.
How I understood it, is that the higher frequencies mainly move fastest but low frequencies move way more air. Because the low frequencies move a lot of air, the air needs somewhere to escape which is to the side of the paper and thus creating low pressure between paper and the speaker. The pressure on the other side of the paper is atmospheric and thus pushing in the paper towards the speaker because the low pressure is not creating an equal amount of force.

I'm still not sure about the high frequencies but I'm guessing that because it's mainly moving fast and not much air it has the momentum and force put into very few molecules which push on the paper harder than the little bit of low pressure between speaker and paper that is created with only high frequencies.

Correct me if I'm wrong in the comments and if you don't mind please DM me the copy paste of the message since there are many comments to go through.
gpt
Imagine the paper is a kid in a swing and the speaker is an adult pushing them.

There's a very specific frequency of pushing that will result in the biggest swings.  It's pushing at the rearmost point of the swing arc.  Speakers pull air as well as pushing, so you'll have to imagine pulling the kid at the front of the arc, too.  The ideal rhythm of pushing and pulling is the resonant frequency, and it's dependent on the length of the swing's chains.

Imagine that you're pushing and pulling at the wrong frequency.  You're pushing while the kid's still moving backwards, or pulling while the kid's at the bottom of the arc.  You can see how the wrong timing could mean less movement, or even uneven swings to the front or back.

The paper has a resonant frequency, too.  Certain frequencies will produce lots of movement, some will produce minimal or uneven movement.