I'll tell you if you want to run active these modded units by Ric are so transparent it's not even funny. Your probably looking at 5k or better to even come close.
Check out some of the reviews they are still around here somewhere. As soon as you put signal through it you'll notice the difference from having a passive filter in there. It is just a hell of allot more dynamic everywhere with nothing in between the amp and speaker. The difference between this and a stock Behringer or Mini dsp is huge , night and day. Cheers.
Kevin