Yes, the sub turns on when it detects a signal.
The readings that I got from Audyssey were as follows:
Fr Left......-4.5db
C Chan.......-4.0db
Fr Right.....-4.5db
Sur Left......0.0db
Sur Right....-6.0db
Sub..........-7.0db
Keep in mind, this is not a "dedicated HT"....the big difference in surrounds would likely be due to the fact that the Left rear corner is rather bare(drywall) with an adjacent double glass garden doors(with blinds)and slightly farther from the main seating position, and the Right rear is closer to the main position as well as having more furniture close by. That could explain the large db variation from L to R in the rear corners.
Audyssey set the folowing crossovers:
Front...Large...40hz
Centre..Small...60hz
Surround...Small...120hz
Last edited by Adrian; 03/26/09 03:39 PM.