subwoofer crosover

Thread Starter

electronis whiz

Joined Jul 29, 2010
512
I made a subwoofer a about a year ago old woofer no amp, so I added an amp from some old PC speakers I had. I put a filtercap in sires with it thinking that would let only the bass through. because it would charge up then release driving the woofer at bass frequency. talking to friend other day said inductor not capacitor, but not sure what to do for inducter, I have some really small tube ones and some from SMPS for filtering AC, but not sure those would work, or wether need biger like a small transformer or make one.
 

crutschow

Joined Mar 14, 2008
34,201
Tubeguy's suggestion is the best if the amp is only powering the sub-woofer since it avoids inductors.

It also has the advantage that you can adjust the corner frequency of the filter with a pot.
 

#12

Joined Nov 30, 2010
18,224
The reason for air core in the power section is that it is impossible for an air core to saturate.
If you're going to filter at low power levels, iron core (anything that is not air) is OK.
 
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