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Really wondering what’s the best way to diagnose my amplifier that goes into protect mode when turning up the volume. I was using the system for about a month with no hiccups. One day I was driving for about an hour with the music up, and it cut out without warning. Checked the amp and it was in protect mode.

Now when i turn up the volume and amp puts itself into protect mode soon as the bass is about to hit. I’ve replaced the battery because it was only charging at 50% but hasn’t solved my issue. Alternator was replaced about 4 months ago.

I tried unplugging suboofer speaker wire with the RCA plugged in and the can’t get the amp to protect at all.

So I’m thinking it’s a wiring issue, possibly with the sub i suspect.. I’m curious, what could i start doing to better diagnose the issue?

Thanks for any help here.

My equipment
NVX JAD800.4 800w amp
Aftermarket HU
Running Polk audio component speakers in the front doors and deleted the rear speakers with 16ga speaker wire.
Sundown sd3 d2 for the sub with 12 Ga wire
Sound ordanace bass bunker box

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