Bumping this oldie: Anyone recently do anything to improve base audio? I ahd the logic 7 HK system in my e90 and freaking loved it. The basic X5 system just doesnt hold a candle to it. I'm hunting around for a set of the front mid and tweeter L7 speakers, and I guess that'll be my attempt to improve the sound quality. I sure do miss those 9" subs under the front seats though....

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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years