Having trouble with my car audio connection?

Question

ok my question is why does my subs knock every time i turn off my truck

Answer 1

I'm guessing by knock you mean the sound that comes from them. I'll answer both anyways, 1: their to loose were you put them and they move around or 2: The turning off the truck may be shortening them out, make sure you have a good amp for them and don't play them to loud and just turn it off, always turn them down when turning off the vehicle or they may blow.

Answer 2

you need to be able to turn your amplifiers off before you turn your truck off ,use a toggle switch on your remote wire , this is a cheap and easy way to fix this problem

good luck.

Answer 3

these links will show/tell you every cause of noise and what you can do/buy to remedy the problem

http://www.crutchfield.com/learn/learnin...

http://www.crutchfield.com/learn/learnin...