Speakers work but no bass

[SizzlerB]

Hi,
I have an F10 BMW with the HK sound system. The speakers and subwoofers have been upgraded to the bavsound ones. The bass no longer works at all. It hasn’t worked for the past month. I had one of the subs replaced and the bass still doesn’t work. Any idea on what it could be? I was thinking it could be a fuse but I was told there is no fuse for the subwoofers in this vehicle. Any advice is appreciated.

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[1aespinoza Premium Member]

Any advice is appreciated.

Have you checked to see if the subs are plugged in? Sounds dumb but it can happen. Also, I do not know if polarity may be swapped but check that as well.