Car Audio Central - Ultimate Car Audio Forum and Community

Posted: **Sat Oct 22, 2016 10:46 am**

I have a 2003 ford expedition and i hooked up a Boss audio head unit and everytime i try and hook up the back sub i hear a humming sound coming from the speaker. I know its powered by a amp so what do i do

Sent from my SM-J320P using Tapatalk

Posted: **Sat Oct 22, 2016 4:27 pm**

Check your ground

Sent from my SM-T330NU using Tapatalk

Car Audio Central - Ultimate Car Audio Forum and Community

Stock rear sub and after market radio.

Stock rear sub and after market radio.

Re: Stock rear sub and after market radio.