The bass intermittently goes out.

Because amp is bridged, the OPERATION SWITCH needs to be in the middle, [L&R].
Because you are driving a sub with the amp, the FILTER SWITCH needs to be set to LPF. [low pass filter]. 94

Thanks.

I already installed 8awg power and ground. Took me about 5 hours to finish.

It seems that my problem went away. I’ve been driving for a week and no problems. Thanks again.

its ur rca wires