Reply To: I just need one HPF for my aux-fed subwoofer

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#54079
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Gordon
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“I just want to (4th order) filter the subsonic frequencies below 35Hz from my MIX send feeding my subs.”

You can get pretty close to this with the PEQ on the Mix channel. Simply set the LF band to the following settings…

Q Width = 1/9th Octave (or adjust to taste)
Frequency = 20 Hz
Gain = -15 dB

According to the on screen graph, the roll-off starts somewhere between 30 and 40 Hz and ends deep at 20 Hz. Even the standard HPF doesn’t slope that abruptly.