Question about Kenwood KFCM6925ie 6x9 3-way 200-watt Car Speakers Car Speaker
You can indeed do this by putting a ceramic capacitor inline with the speaker wiring.
The circuit you have now goes Amp+ to Speaker+, Speaker- to Amp-
putting a capacitor inline means your circuit will go:
Amp+ to Capacitor, Capacitor to Speaker+, Speaker- to Amp-
Ceramic capacitors don't have a + or - side.
The next question is what value of capacitor do you want, and that answer depends on two things -- how much bass you want to cut off (the cutoff frequency) and the impedance of your car speakers (generally 4 ohm, but some are 8 ohm and some are 2 ohm)
Here's a spiffy chart that shows the relationship between cutoff frequency and capacitance. There's a lot of data there. If you get overwhelmed, here's a suggestion:
Assume you have 4ohm speakers, and you want to cut out everything that's going to a subwoofer (120Hz and below) -- you want a capacitor of about 330 uF (microfarad)
You can get those at any radio shack, or order online from someplace like Mouser.com
Posted on Feb 05, 2010
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Posted on Jan 02, 2017
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