My Mechanic's Car Audio
1st January 2004 - report written and upload
True event circle around middle 2002
Active Filter's Combined Phase Response

Looks like the tweeter needs to flip the loudspeaker wiring to correct the inherent active filter's phase reversal.
ACOUSTICS SECTION AUDIO SECTION CAR SECTION
HOME - CHIN Fa Cheng's Technical Website for Acoustics, Audio and Car
Starting May 2007 I work in Hong Kong with frequent travel to Guang Dong Provinces. If you are near welcome to meet up, my email.