Amp shutting off after an hour and won't start up for 3-5 hours

[Leenix 10+ year member]

I just recently installed

12Inch Cadence 500W MaxPower (250rms)

8 x 12 Cadence Daytona DCS812 500W MaxPower (150Rms)

ZRS-6K 6.5 with Crossovers / Tweeters 300W MaxPower (100rms)

AMP: Cadence FX500 5 Channel

1200AMP Battery

My head unit only has 2RCA Outputs, so for that we installed an Equalizer so i can control the Sub in the back. The Equalizer output is 12V to the Amp.

So my problem is that after 40-50 minutes of listening to music, the Amp just shuts down even though it's not hot, it's very mildly warm.

I have to turn off my car for 3-5 hours before the speakers will work again.

Last night i was tampering with the Shutoff Fuse in the bonnet just tapping it and the battery leads, and my audio just came back on, but i think it was just a coincidence.

Also since this problem started, my car radio is changing between using the AUX Output (mp3 player) and Radio mode by it's self.

Can anyone give any advice for any of the above?

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[audioholic 5,000+ posts]

Have you tracked your system voltage during the problem?