BMW e65 750i Subwoofers are not working.

[Chathura1990]

Hello Guys!

My BMW E65 750i 2005 subwoofers are not working. I have Logic 7 box as well. But don't know it's working or not. Recently I bought my car. When I turn volume up front and rear small speakers are giving some bad noise with bass.
Do you have any suggestions?

Thanks in advance!

[Bigrobsbmw]

It's pretty common for the bass amp to die. It's the rectangle box in the left rear compartment.