[warrensomebody]

brucek,

Thanks for your quick reply. I was planning on picking up an ECM8000 and XENYX 802 baring any "just give up" comments from this forum. :-)

One question - why wouldn't I want to use the FBQ2496 or DSP1124P to correct that big hump around 4khz (assuming a "real" mic tells me it's still there)? I was playing around with the filter EQ controls and was able to place a nice wide filter around it and flatten it out considerably (the large hump, although I could see how trying to flatten all the smaller ones might lead to negative results).

But having said that, there is one bigger reason not to use EQ on my upper frequencies. My system is bi-amped. My speakers are Pipedreams Ref 18's and the subs are dual passive 18" sono-tube like cabinets. I'm currently driving them with 400wpc, and they're place directly behind the towers, approx 15' from the listening pos. I've experimented with moving them around a few feet in either direction, but it didn't make much difference. The subs are near the front wall, but at least a good 15' from the sides. The listening pos is about 2' from the back wall.

One of the things I was playing around with yesterday was whether it was better to go with the active xover that comes with the speaker system, or to let my Lexicon do the xover work. The measurements from above are with the latter setup. However, with the active xover, I have control of the phase with each channel, and I think with that in the loop, I can eliminate some of the 100hz problems. However, with every setup I've tried, the 21, 35 and 53hz dips are there to stay, so I suspect they're room modes. Perhaps it's possible to play the Lexicon's sub "distance" setting to control the phase?

One question about fixing the low-frequency problems with a parametric EQ - would I want to start with a very low target level -- one that's below the bottom of the dips, say 60db -- and then pull all the peaks down to that level, and then boost the bass output level to compensate? Or is there some reason to stick with 75db as the target level, and only pull the peaks down less drastically to that level and leave some of the dips in?

Is there any way to see what's going on with the phase with REW before and after these filters are in effect? Thanks,

Warren