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<blockquote data-quote="ThxOne" data-source="post: 8716949" data-attributes="member: 675210">1. Find max clean volume on the head unit with all EQ&#039;s flat, no bass boost, no loudness.2. Turn the gain down on the sub amp all the way. Set the crossover to 80hz on one device only, either the head unit or sub amp, but not both.3. With the sub CONNECTED, play a -10db 40hz tone with the head unit at max clean volume. Adjust the gain on the sub amp until you hear a difference in tone of the sub, when you here the difference, back the gain down until the tone is normal.4. Turn the head unit volume down.5. Play some music, set your EQ and adjust the crossover if needed.This is assuming you don&#039;t have the &quot;tools&quot; to view the signal and clipping of the amp.Example of the sub tone change as you turn up the gain:Normal ----------------=================Distortion -------------------===============))))))))))Edit: If you have a bass knob, turn it all the way up before adjusting the gain.</blockquote>

[QUOTE="ThxOne, post: 8716949, member: 675210"] 1. Find max clean volume on the head unit with all EQ's flat, no bass boost, no loudness. 2. Turn the gain down on the sub amp all the way. Set the crossover to 80hz on one device only, either the head unit or sub amp, but not both. 3. With the sub CONNECTED, play a -10db 40hz tone with the head unit at max clean volume. Adjust the gain on the sub amp until you hear a difference in tone of the sub, when you here the difference, back the gain down until the tone is normal. 4. Turn the head unit volume down. 5. Play some music, set your EQ and adjust the crossover if needed. This is assuming you don't have the "tools" to view the signal and clipping of the amp. Example of the sub tone change as you turn up the gain: Normal ----------------================= Distortion -------------------===============)))))))))) Edit: If you have a bass knob, turn it all the way up before adjusting the gain. [/QUOTE]

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