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      12-15-2010, 04:37 PM   #12
Technic
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Drives: 2012 E92 M3, 2014 528i
Join Date: Apr 2005
Location: Ft Lauderdale, Florida

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Quote:
Originally Posted by montr View Post
The passive crossover is more than just a capacitor. I did not want to break the heat shrink tubing and foam to see what is the design. However, I can peek inside from both end. I see an inductor for the midbass and a capacitor and resistor for the tweeter. I may try to get the response of the network later on.

I did a capture of the signal first on the rear speaker because they are the most accessible. I will get the response at the front speaker when I open the door to install the new speaker.
The crossover circuit is an LR design, with 3 levels of tweeter attenuation (depending on the sound system installed -Business, Professional HU, iDrive):
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