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<blockquote data-quote="UnderFire" data-source="post: 7983004" data-attributes="member: 632639">Ok, you are going to unhook the subs from the amp, and zero out the gain.Once you have finished that, you are going to play a 50Hz test tone through the HU @ ~80% of max volume, everything but the subs should be hooked up to the amp.Plug the DMM into the amp, just like you would with the subs, and set it to measure AC Voltage.Using this equation sqrt(Watts x Resistance) you will get ~24.4 sqrt of (300 x 2)You are going to want to slowly raise the gain until you get to somewhere just below 24.4 on the DMM readout, that is where you are safe at 80% volume, if you max out the HU you will be clipping again.Your friend doesn&#039;t know what he&#039;s talking about, I&#039;d strongly advise not taking his opinions.Note: this equation is for 300 RMS, that&#039;s kicker&#039;s rating, I do not recommend going much higher you will risk blowing the subs.</blockquote>

[QUOTE="UnderFire, post: 7983004, member: 632639"] Ok, you are going to unhook the subs from the amp, and zero out the gain. Once you have finished that, you are going to play a 50Hz test tone through the HU @ ~80% of max volume, everything but the subs should be hooked up to the amp. Plug the DMM into the amp, just like you would with the subs, and set it to measure AC Voltage. Using this equation sqrt(Watts x Resistance) you will get ~24.4 sqrt of (300 x 2) You are going to want to slowly raise the gain until you get to somewhere just below 24.4 on the DMM readout, that is where you are safe at 80% volume, if you max out the HU you will be clipping again. Your friend doesn't know what he's talking about, I'd strongly advise not taking his opinions. Note: this equation is for 300 RMS, that's kicker's rating, I do not recommend going much higher you will risk blowing the subs. [/QUOTE]

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