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Old 01-06-2012, 04:30 AM
elevatorguy925 elevatorguy925 is offline
Sanity is over rated
Location: In my own world
Join Date: Nov 2011
Posts: 91
Mein Auto: Silver 2006 BMW X3
Originally Posted by deafwish View Post
Following some advice from one of Australia's top Car Audio designers (FHRX Studios), I ended up sealing the under-seat enclosures & Dynamatting them.
The supposed ported enclosure the stock speakers are in, is a joke. It has 2 openings that could not possibly be tuned.
The supposed port does not go in to the B pillar, as there is sound insulating foam there.
Having a small, sealed enclosure should also assist in their power handling - when amplified.
Midbass sounds far more accurate (less boomy) in the sealed enclosures and I've fitted a pair of inductors which has removed the high-end superbly (thanks Jim!).
FYI - my X3 has 6.5" midbass - not 8"! The top looks 8" but the woofer itself is a 6.5"!
It's sounding pretty darn reasonable now, with the staging back up just above the centre of the dash (inductors worked wonders with this) - just need to sort out the loud mid's with some more EQ...

What did you end up using for the inductor value on the under seat subs?
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