I've had 2 problems running the mp-2 so far and I believe both were user related, actually, one was a cable problem. Other than that, tapes have been sweet, I'll send you off a sampler package if you like, nick. I recorded a rave last night, bassy as all hell in the venue of course, and the tapes sounds so frickin schwag. I'm powering them at 48V and haven't had any SPL issues, although I don't run stack....ever. I run from the sweet spot, and boy do they sound sweet. I got a DIN-type config rolling in my hat, thanx to armen's genius.
As far as my knowledge goes, I am not using any bass roll-off, on the mp-2 nor on the AT8533x modules (they have their own roll-off switches). I haven't had any reason to test the switches because the mix is always sounding good, but it is comforting to know it is there if I need it.
also, I have to talk to goose about this, but I think his mics aren't matched. Or maybe it's the gain on my mp-2, but they are about 2 dB off.
more on the rave later!
~schwillberitis
PS what are you using to power the CMC-4's?