Need help with car audio PLEASE

My setup is Powerbass 3xl 12 dual 1 ohm (850rms)

Powerbass asa3 600.1 Class A/b (600 watts @ 2ohm)

HU Alpine UTE52bt. preamp 2v

Wiring (4ga )

I need help figuring out how to correctly set the gain.

My amp is getting really hot when I play music for 10 mins +

I normally play my music loud and when im driving, I drive a soft top jeep wrangler so I need to turn it up louder than usual because of the wind, engine, mud tires....

I can smell a faint smell of rubber or something coming from my port. It doesnt smell very bad , but I just want assurance that everything is ok..

Also when I crank it up when im driving, my lights dim when the bass hits.

I need help with how to properly set this up

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