Quote:
Originally Posted by jimmyjazz86
Basically, the capacitor acts as a cheap passive high pass filter that allows only the higher end of the audio spectrum into the speaker. It's how you get most speakers in multiway boxes to only reproduce their specific frequencies (infra/sub/mid/tweeter). besides just tuning the diaphragm of the driver itself.
The capacitor works like this because their impedance values can fluctuate across the frequency spectrum, only allowing those in certain frequency bands to pass through between the plate and dielectric layers.
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in a 'typical' 6db/oct crossover arrangement, the woofer will be 'acoustically' crossed over, ie, no additional components, and the tweeter will have a capacitor across it for a 6db/oct rolloff.
in this arrangement, at higher frequencies, doesn't the combined 4ohm woofer and 4ohm tweeter present to the amp as a 2ohm load?