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<blockquote data-quote="paulmarsh1222" data-source="post: 8490602" data-attributes="member: 669469">The gain on a LOC isnt the same as the gain on an amp. The gain on the LOC is to adjust the output signal to best match up with the amp where the gain on an amp is to adjust the input signal from your head unit.The best way to set gains is with an osciliscope to make sure you&#039;re not clipping from the headunit or from the amp.Another subjectively reliable way is to go about it like this:Grab a CD that is very well recorded and best represents the type of music youll be listening to most. Set ALL the gains on the amp to zero. Turn the volume up to 75-80% on the CD player.Turn the gain up slowly until you hear distortion. Listen not only for the speaker distorting from being pushed too hard but also distortion from the amp being pushed into its high THD range. Once you reach this point, back the gain down to just below the distortion.Remember, the gain is not a volume. It only matches up the amps input with the HU&#039;s output. This way when the head unit is at 60% volume, the amp is at 60%. If you set your amps gains too high, when the HU is at 60%, the amp could be at 100% so if you nudge the volume up any more the amp will overload, clip and send out a highly distorted signal limited only by its input voltage.Btw what&#039;s the make and model of your loc? I need to know the voltage range of the loc in order to set your amp gain voltage correctly.</blockquote>

[QUOTE="paulmarsh1222, post: 8490602, member: 669469"] The gain on a LOC isnt the same as the gain on an amp. The gain on the LOC is to adjust the output signal to best match up with the amp where the gain on an amp is to adjust the input signal from your head unit. The best way to set gains is with an osciliscope to make sure you're not clipping from the headunit or from the amp. Another subjectively reliable way is to go about it like this: Grab a CD that is very well recorded and best represents the type of music youll be listening to most. Set ALL the gains on the amp to zero. Turn the volume up to 75-80% on the CD player. Turn the gain up slowly until you hear distortion. Listen not only for the speaker distorting from being pushed too hard but also distortion from the amp being pushed into its high THD range. Once you reach this point, back the gain down to just below the distortion. Remember, the gain is not a volume. It only matches up the amps input with the HU's output. This way when the head unit is at 60% volume, the amp is at 60%. If you set your amps gains too high, when the HU is at 60%, the amp could be at 100% so if you nudge the volume up any more the amp will overload, clip and send out a highly distorted signal limited only by its input voltage. Btw what's the make and model of your loc? I need to know the voltage range of the loc in order to set your amp gain voltage correctly. [/QUOTE]

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