Hey Tas,
Welcome and I'm glad you are enjoying your system. I also have the 2805 and do use the mic for the delay and level setup, however, I would recommend you going into the setup menu, arrow down to the RoomEQ part and turn that off. I found it made my M60's sound like the midrange was to high. Alan from Axiom has even recommended not using the EQ part of these autosetup receivers as it can make good speakers sound worse. I agree with you on the delay and levels, it does a pretty good job, however, I found that once I got a Radio Shack SPL meter and calibrated everything using the receivers pink noise test, it was a little off.
Randy
