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      12-16-2010, 07:52 AM   #19
Technic
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Drives: 2015 320i
Join Date: Apr 2005
Location: Ft Lauderdale, Florida

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Quote:
Originally Posted by montr View Post
I think my passive crossover is different than your crossover. I have the 268 kit, not the 684. The crossover has 2 wires on the inductor side and 4 wires on the other side. I can see the inductor on one side. On the other side I can see a resistor and a capacitor. Measurements with a DVM confirm that there is a capacitor in the path.

I think the crossover is a first order lowpass for the midbass (1 inductor). For the highpass to the tweeter, it is a first order (1 capacitor) with some attenuation (1 resistor).
Thanks... I can see it now in the installation documents. The new 268 crossover have a single tweeter output regardless of OEM sound system (Business or Professional). The 684 crossover has two different tweeter outputs, one for Business and one for Professional systems.