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  1. Subwoofer Amps | High Pass Filters
    Hi all, Does anyone know if the epx4000 has a subsonic filter? I'm close to choosing epx4000 or 3000dsp. I want to know what type of high pass filter it has and at what frequencies is it switchable. And if I can turn it off completely? I like the 3000dsp for the adjustable slope at 20hz and...
  2. Subwoofer Amps | High Pass Filters
    About a week ago I put a pair of NMB Technologies FBA08A24L1A fans in an EPX4000 and wanted to post some notes. First of all, it's a tight fit. The EXP-4000 has two fans. One cools the power supply area, the other cools the tunnel/block heat sink for the amp section. Both blow from back...
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