Anybody build there own AudioControl filters modules?
The audio shops that sell them around here charge $30 for a module, so I finally built my own to day. Total parts cost $1.57, but more like $4 with shipping cost. I could of made it for probably 60 cents, but I used the good stuff!

255 k-ohm 1/4w +1% Metal Film Resistors





This module will give my subs a 18db/octave roll off at 28Hz

 

Can you elaborate on what it does?

 

It filters out the bass from the set frequency (28hz) on down.
Not really important if you subs are in a sealed box, but for subs in a ported box it's very important to have a subsonic filter close in frequency to the frequency the port is tuned to, to help prevent speaker damage.

 

I need to construct one of these myself here now. I want to go to a ported box...

Is there anyplace that you could point me to read up on how to build one?

 

Nicely done!!!

 

This is module is only for AudioControl 3rd order high/low pass filter, this is a active (before power amp.), not a passive filter(after the power amp.). I don't know of any other campany that builds their filter modules like this, but I could be wrong.