Setting it up, Diamond Audio 400.4

[Rc 415 10+ year member]

I have a Diamond Audio 400.4, powering a set of Crystal SSCS6 comps (they have there own crossovers, so do I leave the amps x-overs turned all the way down to 55?), and I don't like how it sounds at all, I have the speakers bridged getting 200 watts rms a piece. How should I set all the settings in this pic? Besides the gain obviously... I have that turned to 1/4 up so as not to damage the speakers..

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