I assume the 70 percent is for low recorded music ,aka headroom. im pretty happy where it is -10db as of now I've set and reset them again , at about 4v out of bit one my noise floor is gone which is about -10db on the dsp levels ,when I complained about noise floor before ,u were correct the gain on the amps tweeter channel was 2 high .the audison amp goes from 0-5 on the gains ,im 2.8 tweeter channel , 3.5 mids ,3.5 bass set that at -5 db noise I set all those with my scope ,I think it was 17.5 volts tweeters , 23.5 mids ,55 for subs ,I time aligned the speakers ,use the mic for db output ,adjusted the channel outputs relative to the drivers seat ,had to tone down the driver side speaker s.I installed the drc .I played around on the software ,looks like u can hook up a mic to the computer ,open up the bit one software ,it has a built in rta ,and it can self calibrate all the channels eq, may play with that soon . I switched between the tuned front active ,to not tuned ,not time aligned ,its night and day ,best thing I ever did was go active and add dsp. it went from what I through was a good system ,to a great sounding system ,with only 4 speakers and 2 subs