After properly setting your limiter, how hot do you want to run the input signal? Is it okay to be hitting red (lightly) on the peaks of the music (on the driverack)?
On my setup, I run a small 8channel mixer between the DJ mixer and the driverack, as to give myself some administrative power. When the vu meter on the mixer is at -7 is just when the driverack begins to clip. Is this normal? Is there any way that I could somehow dial it in so it clips after 0 on the mixer? Maybe I didn't set my limiter correctly? On the driverack input signal meters, I think it illuminates two lights, then goes into clipping.
I limited by running my amp wide open, with a 60hz test tone through the mixer until it went over 55v, then dialed the limiter back until it read 48v (either that or 53v was the next click up, 3015lf)
Should I be enabling the compressor on my driverack? If so, how much compression?
Thanks for any answers you can provide!

edit:
Another thing, to match the output levels between the highs and lows, would it be common practice to run all amps wide open and once the limiters are set on the low channel, set the limiter on the highs just low enough that they clip at the same time? Then I can just dial back the levels by turning the attenuators down. That way, if the DJ goes into hard clipping on the mixer, my tops don't go louder than my subs.