Quote:
Originally Posted by Lozza47
Hi all,
Does any one have any recommendations for the best direct fit under seat sub upgrade over Hi Fi sound system in m235i?
A lot of threads are based on improvements over HK system.
I won't be changing the amp either.
Alternatively, if you could only do one - would changing out the speakers or changing out the amp for something like bimmer tech's harness the best audio performance improvement?
I find the low 20-60hz area on the m235i to be no existent.
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I did replace all the speakers but the best improvement came from replacing the amp and tuning the low end specifically in the 20-60HZ hertz......What a difference!!
