Forgot to mention... you can move the 8 eq's to different portions of the response curve which is a fantastic feature. for me, i noticed that most of my adjusting came in the 45-70 hz range. using the test tones made it very easy to find the best place to put my sub before i eq'd it. where it had been turned out to be the worst place for it. you also can see how far down your mains will go before rolling off. this is an incredibly powerful device... more so than they are letting on with all the things you can adjust.

A note of WARNING... be very careful about stacking the EQ...especially at lower frequencies. you can burn your sub up in the process. also, apparently it takes way more power to boost a valley than it is to lower a peak.

i thought the manual was a bit vague about things but talking with the tech guy at velodyne was very helpful.

not sure about other processors, but with the 990 that i have, you want to disable the SMS crossover. this is vaguely referenced in the manual.