What JohnK said.

I would get the rear channels out of the equation and see how things work, if it doesn't have any issues then the problem must be with one or both of the speakers used in the rear channels. My old Denon 1804 stated the rear channels needed to be a minimum of 16 ohm as the rear channel(s) was split on one amp so dual 8 ohm speakers in parralel would have been around 4 ohm and could have possibly caused it to shut down, luckily it never did with a single 6 ohm QS8 on the circuit.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70