Stock rear sub and after market radio.

jeffdessler · Post by **jeffdessler** » 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

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imiguenes · Post by **imiguenes** » Sat Oct 22, 2016 4:27 pm

Check your ground

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Stock rear sub and after market radio.

Stock rear sub and after market radio.

Re: Stock rear sub and after market radio.