You sure it's the sub and not the logic 7 amp?
2008 BMW 650i Convertible- LCI.
- ACS style rear spoiler
-Eisenmann Race Exhaust, resonators removed, Magnaflow X pipe.
- LED Angel eyes, plate light and interior package
- Tinted Windows- Charcoal 20%
- Stock 19" summer wheels & 18" M6 Winter wheels