I was wondering what I should set the gain and frequency at on my amp. I have a kicker kx1200.1 hooked up to two kicker L7's. I was told to put the gain to 5 for matching my head-unit, any suggestions? and same with my other amp, kicker kx350.2 and I have that going to infinity kappas perfect 6.1's what should I set that amp to?