Help with Subwoofer problem.

[ArieS1204 0]

Hello all, 

I have a '17 Audi A3 and I recently had Best Buy install a Pioneer TS-WX1010A and it sounds great...

However I have a huge issue with it. If I turn off the music or even put the volume to 0, the sub goes berserk.

The guy at Best Buy has never seen that and of course has no idea what could be the problem...

Any ideas?

 

Thanks in advance.

[95Honda 486]

If they ran the sub amp with high level inputs tapped off of speakers in the car sometimes when the factory stereo turns off there is no more dampening of the factory speakers and they act as microphones placing the subwoofer into a runaway feedback loop. Common with cheap install places like Best Buy.