XenonMan, I have the newest firmware version.
Gonk, my mains are old Dahlquist DQ 10's. Where the -3db point is, I couldn't tell you. They bottom out at 35 hz. There are five drivers, in each speaker, with crossover points at: 400hz; 1000hz; 6000hz & 12,000hz. I'm sure that doesn't help much.
You are right, the microphone was place in a slightly different location, pointed more up, than forward.
thanks,
John