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Cutting Sub Frequencies before Amp & FOH

Discussion in 'Amps [BG]' started by jd_watt, Dec 5, 2013.

  1. jd_watt

    jd_watt

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    Mar 22, 2013
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    Hi Everyone, I've heard it asked of high frequencies, but does anyone use a low shelving eq or cut low frequencies (20-50hz) completely out of their signal before sending the signal to the amp or foh mix? I've noticed a few of my pedals respond well with those frequencies cut, and the overdrive is less "wooly", but I don't want to loss all of the basses impact by cutting them. I understand sound operators generally cut here anyway to make room for the boom of the kick drum.

    What do you think: are there benefits to getting rid of these frequencies before they even hit the amp or FOH? Thanks!
  2. BassmanPaul

    BassmanPaul Gold Supporting Member

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    Yes there are benefits to using a high pass filter such as the one Fdeck puts out. Some basses have subtonics in their output that add nothing to the signal. These take a lot of power away from the music that you want to amplify. Basses with Piezo pickups ors notorious for this.
  3. jd_watt

    jd_watt

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    I experimented with it once at practice and was much happier with some of that super low-end clutter being reduced. Right now I only have two boss pedals (GEB-7 and an old parametric) to work with before the amp. The parametric sweeps down around 25hz and the GEB-7 has a notch for 50hz (with a rather wide bell). The pf500's bass knob is centered at 40hz I believe.

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