Quote:
Originally Posted by RL18
Yessir you are correct. Those underseat woofers really are only meant to play the lower midrange, bass, and sub bass (which is about 25-400hz). They are by no means a subwoofer, but they can absolutely play those lower frequencies. They just won't have the same presence that a 12" subwoofer has. Another thing to consider is the factory ampliers have these underseat subs configured as "stereo" where as a subwoofer would be configured as "mono" so they will always sound a bit different. Btw, you shouldn't ever configure them as mono, they sound terrible.
I've never tried the bavsound speakers because I think they're over priced and not really any better than some of the cheaper options. But they should all be able to play down to around 20-40hz no problem. The issue comes when they try to play the higher frequencies with the low frequencies. That's why I cut my subwoofer off at 400hz so they won't play anything above that. That might be why you hear distortion. Of course Bavsound doesn't give you all the specs on their speakers so I really couldn't tell you why they sound the way they do.
I remember a thread somewhere here, maybe it's in the e90 forums that shows how each audio system has their base eq set up (not the eq you control), I'll have to check and see if I can find it... that could be another reason they sound much different than the others.
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See, the nice thing about B&W upgrade is you dont really need to fine tune anything, it is factory preset for optimal performance with the system on hand. If I was to get involved to fine tuning, I would just go with a custom built system, with proper amps, crossovers and enclosures.