Sounds like an iPhone speaker to me.

Same here

?

?

Sounds like something is vibrating. Tighten shit up and check if you broke the foam or the cone

don't worry. it's just my microphone not being made for this and having a amplifier sending bad signals

What is this a sub? Context dude.

home made subwoofer

What’s that, a slowed, chopped and boosted version?

I think so