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<blockquote data-quote="Alpineforever" data-source="post: 4577712" data-attributes="member: 585728">unsafe info?Have you ever &quot;properly&quot; used a DMM to set gains???As long as you have some semblance of knowledge about how much power your amp can cleanly produce then there is no danger in using a DMM to set your gains.Heres how to &quot;properly&quot; use a DMM to set gains... (on a sub amp)Set your DMM to AC voltage.Put the DMM leads in the Amplifiers output for speaker wire, positive in positive, negative in negative.Play a 50-60HZ tone, turn your head unit equalization and bass boost to 0.Set your head unit volume to about 3/4 of the way up or a little more.Slowly adjust the gains (from fully counterclockwise adjust clockwise) until they reach your target voltage.To find your target voltage.Figure out how much power you want to send to your drivers (target wattage).Multiply your target wattage by your resistance level (ohms).Find the square root of your answer and that is the AC voltage that will be displayed on your DMM when gain is set properly.If your amp is going to be running your speakers, like yours will be, just use one channel and use a 1000HZ test tone and follow the instructions above.This isn&#039;t as precise as an O-scope, but it is by no means dangerous like Shitton suggestsIf you want to know where to find test tones you can download them at ROE in the downloads section, a sine wave is a test tone BTW<a href="http://www.realmofexcursion.com/" target="_blank">http://www.realmofexcursion.com/</a></blockquote>

[QUOTE="Alpineforever, post: 4577712, member: 585728"] unsafe info? Have you ever "properly" used a DMM to set gains??? As long as you have some semblance of knowledge about how much power your amp can cleanly produce then there is no danger in using a DMM to set your gains. Heres how to "properly" use a DMM to set gains... (on a sub amp) Set your DMM to AC voltage. Put the DMM leads in the Amplifiers output for speaker wire, positive in positive, negative in negative. Play a 50-60HZ tone, turn your head unit equalization and bass boost to 0. Set your head unit volume to about 3/4 of the way up or a little more. Slowly adjust the gains (from fully counterclockwise adjust clockwise) until they reach your target voltage. To find your target voltage. Figure out how much power you want to send to your drivers (target wattage). Multiply your target wattage by your resistance level (ohms). Find the square root of your answer and that is the AC voltage that will be displayed on your DMM when gain is set properly. If your amp is going to be running your speakers, like yours will be, just use one channel and use a 1000HZ test tone and follow the instructions above. This isn't as precise as an O-scope, but it is by no means dangerous like Shitton suggests [I]If you want to know where to find test tones you can download them at ROE in the downloads section, a sine wave is a test tone BTW[/I] [URL="http://www.realmofexcursion.com/"]http://www.realmofexcursion.com/[/URL] [/QUOTE]

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