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<blockquote data-quote="fixinit" data-source="post: 8535489" data-attributes="member: 670893">Hey guys. I dialed in my amp&#039;s output voltage to 40v = roughly 750w with my HU at 2/3rds its max volume (38) @50hz. Here&#039;s the thing. I listen to my HU&#039;s volume around 15-20 max with quality CD recordings. At 15-20 volume, the voltage test at the amp obviously decreases exponentially, so that leads me to believe that I&#039;m no where near my targeted output of 750w for the sub - more like half. In theory, shouldn&#039;t I be adjusting my amp gain to head unit at my personally chosen MAX listening level (20) instead of cranking the HU up 2/3rds (38)? Are their downsides to setting gain this way?HU: JVC KD-R330 - Line-Out or Subwoofer-Out Level/Impedance : 2.5 V/20 kΩ load (full scale) Output Impedance : ≤ 600 ΩAmp: Power Acoustik PS1-4000D - 1700RMS @ 2ohmsDriver: MOFO-124x - 1200RMSWiring: KnuKonceptz Kolossus 4 gauge OFCLinks or comments would be helpful. I haven&#039;t been able to find anything too credible on this. Thanks.</blockquote>

[QUOTE="fixinit, post: 8535489, member: 670893"] Hey guys. I dialed in my amp's output voltage to 40v = roughly 750w with my HU at 2/3rds its max volume (38) @50hz. Here's the thing. I listen to my HU's volume around 15-20 max with quality CD recordings. At 15-20 volume, the voltage test at the amp obviously decreases exponentially, so that leads me to believe that I'm no where near my targeted output of 750w for the sub - more like half. In theory, shouldn't I be adjusting my amp gain to head unit at my personally chosen MAX listening level (20) instead of cranking the HU up 2/3rds (38)? Are their downsides to setting gain this way? [B]HU:[/B] JVC KD-R330 - Line-Out or Subwoofer-Out Level/ Impedance : 2.5 V/20 kΩ load (full scale) Output Impedance : ≤ 600 Ω [B]Amp:[/B] Power Acoustik PS1-4000D - 1700RMS @ 2ohms [B]Driver:[/B] MOFO-124x - 1200RMS [B]Wiring:[/B] KnuKonceptz Kolossus 4 gauge OFC Links or comments would be helpful. I haven't been able to find anything too credible on this. Thanks. [/QUOTE]

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