Amp gain problem

[jt73]

Newbie and need advice bad. I have a kenwood x450-4 and my B side has correct voltage at gain = 20.0v, but my A side I set gain at 10.9v using Left terminals but right terminals are reading a little over 20.0v.I reset my headunit and also would appreciate advice on what I should do as far as crossovers. Thanks for any and all help. The HU is a prs80.

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[crosjr 10+ year member]

Are you using a mono test tone to test the gain levels? There is a separate option in the 80prs called "Audio Reset" I believe, give that a try. Unless that is the reset you are talking about but I think there are 2 different ones. Otherwise check the levels in the head unit. When I tried an auto EQ/TA it changed the channel levels itself.

 

[jt73]

Yes I reset both.

 

[keep_hope_alive Premium Member]

So three channels can reach 20VAC output but one has only 10.9VAC output given the same input? Where is the input selector switch? If set to A only then I'd suspect a bad amp output. Experimenting with the input switch and configuration will help determine if the issue is on the input side of the amp or if the rca cables or HU output is suspect. Confirm if you have 4ch rca or 2ch.

Rich V.