FS: One pair of Bavarian Sound Werks 8" Ghost Underseat Sub Woofers. These were installed in my E60 for a couple of years - prior to selling the vehicle. They are used - but in perfect condition. A very nice upgrade over OEM subs. Asking $275. + shipping in US. paypal

BSW ad reads:
2X THE BASS - Our woofers are 10 dB+ louder at from 20Hz to 60Hz vs factory woofers, resulting in twice the loudness in this critical “sub-bass” range (and over 8x the sonic energy). You won’t just hear the bass; you’ll feel it.

 

Are they plug n play?

 

Yes - pretty easy install

 

Subs have been SOLD !