Actually, I was thinking that the M22 would be sufficient - great mid and high range, with a good sub to care of the low range. Given the entire seating area is actually only 12 by 14, I thought the rears in back would round it out. Also, the bass management of H/K would allow for all base from any channel to be routed to sub. To me, the M60s would be too big for front. If you have great sub, why have the bass come from the fronts? Besides, I think the H/K and M22 will be able to play much louder than I can stand. Does any one have any experience listening to Logic 7 (H/K) or DLP IIx with direct radiating rear speakers?