subsonic filter

[blowthemup 10+ year member]

Is there a way to set the subsonic filter electronicaly (some kind of meter like a voltage meter)? The scale on mine dosnt allow for acurate adjustment and I want it to be where its spose to be.

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[squeak9798 5,000+ posts]

http://www.caraudio.com/forum/showpost.php?p=1841560&postcount=3

 

[helotaxi 5,000+ posts]

My question is how do you know what it "should" be set at? If you can't answer that definitively, you are better off not trying to set it precisely with a DMM and rather setting it based on sub cone movement with low freq tones or sweeps.

 

[blowthemup 10+ year member]

You set it to the tuning frequency of your box and mine is 33hz, that correct?

 

[helotaxi 5,000+ posts]

Wrong. Next guess?

My point is set it based on cone excursion not some word of mouth "tuning freq minus the cube root of the box volume in deciliters" crap. The point of the SSF is to prevent overexcursion and each sub is going to behave differently in each box. Some general "set it to X" crap is a total waste.

Set the SSF to its maximum. Set a low freq sweep on repeat and turn up the volume to the loudest you'll play it. Slowly dial down the SSF until you start getting uncomfortable with the flailing of your sub(s). Turn it back up a tiny bit and call it good.