Subs still make noise when i turen off car?

Question

i just instaled my subs today to my stock stereo and it sounds really good but when i turn my car off there is a loud vibration sound but goes away as soon as i turn the key 1 click and the stereo goes on. is this bad? and how do i get it to stop

Answer 1

i would guess u installed the amp wrong because amps have a signal wire that should be installed from the deck to the amp and will only turn on when the deck is turned on. if it hooked up to a stock deck them what you did was you hook up the constant power wire for your radio to the signal wire or your amp.  the constant power wire provides power to you radio even if you turn the car off so you don't lose your settings on your radio.

Answer 2

Please elaborate further and add more information so I can assist you more accurately and properly.

Answer 3

Have you checked to see if your amp is going off when you turn off your car maybe that could be the problem. And if its not that you can try installing a noise filter.