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<blockquote data-quote="Astyl" data-source="post: 1805176" data-attributes="member: 566433">Alright guys, i have a four channel Alpine Amplifier.. a MRP-F240, its 40 watts RMS @ 4 ohm x 4Now i was using the math method of tuning your amp40x4=160sqrt=12.6 volts to tune to with a DMM playing a 1K hertz test tone at zero DB at your desired max volume youd useNow my amp is a four channel.. so it has two gain knobs.. one gain knob for channel 1+2 and another for 3+4, now heres where my problem sets inI tuned my front channels using channel 1 on the amp, and set it to 12.6 volts, i tuned the rear channels using channel 3, and went to 12.6 volts.. Now channel 1 and 3 read 12.6 Volts.. but when i checked out channel 2 and 4, they read 13.1 volts?How is this possible? Channel 1+3= 12.6 volts Channel 2+4= 13.1 volts.. yet theyre tied off of the same gain knob? I checked my headunit, and all setting are on flat ( balance / fader etc is turned off, so its not something with the preout voltage)... Same gain knob, yet different voltages depending on the channel? wtf?</blockquote>

[QUOTE="Astyl, post: 1805176, member: 566433"] Alright guys, i have a four channel Alpine Amplifier.. a MRP-F240, its 40 watts RMS @ 4 ohm x 4 Now i was using the math method of tuning your amp 40x4=160sqrt=12.6 volts to tune to with a DMM playing a 1K hertz test tone at zero DB at your desired max volume youd use Now my amp is a four channel.. so it has two gain knobs.. one gain knob for channel 1+2 and another for 3+4, now heres where my problem sets in I tuned my front channels using channel 1 on the amp, and set it to 12.6 volts, i tuned the rear channels using channel 3, and went to 12.6 volts.. Now channel 1 and 3 read 12.6 Volts.. but when i checked out channel 2 and 4, they read 13.1 volts? How is this possible? Channel 1+3= 12.6 volts Channel 2+4= 13.1 volts.. yet theyre tied off of the same gain knob? I checked my headunit, and all setting are on flat ( balance / fader etc is turned off, so its not something with the preout voltage)... Same gain knob, yet different voltages depending on the channel? wtf? [/QUOTE]

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