clipping

How are you measuring 80 ?? Is that the setting on the amp or a measurement of the audio level at yoru seat?

This is what I mean by not sure you are describing the issue.  Does the sound cut out... or do you hear the sound get really nasty?

sound cuts out, i measured with a meter about 6 feet from speaker

OP:

That’s not clipping!

Clipping is a type of distortion heard when an amplifier reaches the maximum voltage swing it is capable of. It’s called clipping because the normally sinusoidal like signals do a hard stop at the maximum voltage, looking as if scissors had clipped them.  It sounds quite harsh.  It does not sound like silence.

The audio cutting out is not clipping. It’s more likely a sign of a thermal or current overload.  It may happen if your speakers have too low of an impedance for your amp, whether by design or fault.

thank you , so do you think the cd player is playing a roll in this