Angelina Jolie

Help with setting gains on amp with multimeter?

I have a 1400w peak 2 channel crunch amp hooked up to a bridged 1200w peak 10″ kicker l7 dvc sub at 4ohms. I want to know how to set the gains right step by step. I know i have to get a 60Hz tone and have my EQ as flat. but what should all the settings be when i tune it with a dmm?
I have a pioneer deh2400ub head unit if that matters…
have no idea wat the amps rms ratings r, but the subs rms is 600w