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<blockquote data-quote="BnGRacing" data-source="post: 7490432" data-attributes="member: 557400">A sub fading in and out leads me to believe it&#039;s not an amp problem but some RCA&#039;s that wiggled loose or are now corroded. Amps either work or they don&#039;t. But you said you&#039;re getting an idiot light, so it&#039;s probably not the RCAs.There&#039;s a few LEDs; yellow, orange, red, green. Red means the amp is on. Green is the noise gate. Yellow &amp;amp; Orange are protect modes; thermal &amp;amp; low impedance. I forgot which is which.What I&#039;d look at 1st is the terminal cup going into the sub box. It could be melted &amp;amp; causing a short when it gets warm causing the low impedance problem. If your amp is going into thermal protect; when was the last time you cleaned the fan? A Q-tip &amp;amp; some of that PC &#039;air in a can&#039; stuff will make a huge difference as those aluminum channels can get quite grungy...especially after a decade.Other things I&#039;d look at are the condition of the speaker wires. If they&#039;re old &amp;amp; brittle, that can cause issues and freak out the amp.I&#039;ve owned a lot of Xtant amps...maybe 10...but never one of the big monos. Is yours pre or post Mitek? You can tell by looking at the case; square cutouts = Xtant design &amp;amp; hexagonal cutouts = Mitek/MTX design.They&#039;re quirky, but I love &#039;em. IMO, those are some of the best amps ever made...gorgeous too.</blockquote>

[QUOTE="BnGRacing, post: 7490432, member: 557400"] A sub fading in and out leads me to believe it's not an amp problem but some RCA's that wiggled loose or are now corroded. Amps either work or they don't. But you said you're getting an idiot light, so it's probably not the RCAs. There's a few LEDs; yellow, orange, red, green. Red means the amp is on. Green is the noise gate. Yellow & Orange are protect modes; thermal & low impedance. I forgot which is which. What I'd look at 1st is the terminal cup going into the sub box. It could be melted & causing a short when it gets warm causing the low impedance problem. If your amp is going into thermal protect; when was the last time you cleaned the fan? A Q-tip & some of that PC 'air in a can' stuff will make a huge difference as those aluminum channels can get quite grungy...especially after a decade. Other things I'd look at are the condition of the speaker wires. If they're old & brittle, that can cause issues and freak out the amp. I've owned a lot of Xtant amps...maybe 10...but never one of the big monos. Is yours pre or post Mitek? You can tell by looking at the case; square cutouts = Xtant design & hexagonal cutouts = Mitek/MTX design. They're quirky, but I love 'em. IMO, those are some of the best amps ever made...gorgeous too. [/QUOTE]

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