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<blockquote data-quote="ejschultz" data-source="post: 6336662" data-attributes="member: 603800">The only thing I can see with the sub is on the Alpines, the sub preout isn&#039;t at 4 volts until the sub is turned up to 15 and the volume is near max. If you measured for the correct voltage, that shouldn&#039;t matter though. I gave up on using my DMM to set my gains. I was supposed to be getting like 30 something volts for my subs and I had a hell of a time getting the DMM to read over 10V. You do disconnect the speakers and wire the DMM directly to the amp and measure AC voltage, correct?To answer your other question, in part, I would assume that all amps have some sort of variance in voltage between channels. Higher end amps may not have as much variance as some cheaper ones. Even though all the transistors and capacitors and really everything else for that matter in the amps are rated the same, they&#039;re not identical. Measure the capacitance of two 330 uF capacitors. Even though they&#039;re both rated at 330 uF, you&#039;ll see some variance there. That&#039;s probably where the variance in the channels comes from. A higher end brand with hand selected internals may limit or eliminate the variance you&#039;re seeing.</blockquote>

[QUOTE="ejschultz, post: 6336662, member: 603800"] The only thing I can see with the sub is on the Alpines, the sub preout isn't at 4 volts until the sub is turned up to 15 and the volume is near max. If you measured for the correct voltage, that shouldn't matter though. I gave up on using my DMM to set my gains. I was supposed to be getting like 30 something volts for my subs and I had a hell of a time getting the DMM to read over 10V. You do disconnect the speakers and wire the DMM directly to the amp and measure AC voltage, correct? To answer your other question, in part, I would assume that all amps have some sort of variance in voltage between channels. Higher end amps may not have as much variance as some cheaper ones. Even though all the transistors and capacitors and really everything else for that matter in the amps are rated the same, they're not identical. Measure the capacitance of two 330 uF capacitors. Even though they're both rated at 330 uF, you'll see some variance there. That's probably where the variance in the channels comes from. A higher end brand with hand selected internals may limit or eliminate the variance you're seeing. [/QUOTE]

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