Tom - the Macs are rated at 500 watts from each tap, I have tried all 3 and prefer the 4 ohm tap, interestingly, the 8 ohm tap sounds good too. Bass is a little smoother. The 2 ohm tap does have a little more texture in the midrange - I need to try it again.
I have not bridged the Classe as I only have one. Have always been interested to try it however and flirted many times with buying another one.
The ceiling is the most interesting part of my room. I used Rives Audio to build out my basement, hence the 18 X 42 foot size. We used the floor joists to build a giant diffuser by using blocking between joist bays, blocked at 15 to 40 degree angles in each bay. Over 380 blocks - I think my contractor wanted to hang it up when he read those plans! Then we treated and covered with cloth so the ceiling actually plays higher than 8 ft. There are 3 soffit areas, the first 2 are a combination of diffuser/absorption where the music takes place. The last soffit is geared more for absorption to deaden that end of the room.
I have a pool table back there. Great to lay stuff on and collect dust rather than actually play pool! LOL. The room really does sound great and was the best investment I have made in my system.
