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  1. Technical & Advanced Car Audio Discussion
    I picked up an oscilliscope/DMM to be able to check my sine waves from the head unit and amps to make sure I was not clipping. I found where my head unit clips using multiple test tones. 80hz for subs, 800 hz for mids, 10khz for tweets. All good there. I set the gains on my PPI 4200AM for mids...
  2. Technical & Advanced Car Audio Discussion
    I am about to install a PG Tantrum 1200.1 (Class D amp) and want to set the gains using oscillocope/DMM. From what I have read most everyone sets the gains with the speakers unhooked. The 1200.1 manual says that it should never be powered on without speakers connected. None of the other Tantrum...
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