Hi again, folks!
Continuing my work with multiple subwoofers and my AV7702. I went through a few steps:
I hooked up the two subwoofers to output 1 and output 2 respectively. Both are using wireless adapters due to their locations in the room.
Next, I used an SPL meter (in REW) to dial in the phase control on the subwoofers to eliminate as much cancellation as I could.
Finally, I ran audyssey.
Audyssey sets the subwoofer distances as 28.5ft and 56.5ft (respectively). However, when I go into the "Distances" screen in the Speakers setup menu and try to exit, I get a popup message that says, "Speaker distances are not valid, please set them again." When I hit "back" at that point, the distance of subwoofer 2 is changed to match subwoofer 1. If I hit back, this value doesn't save.
I checked the manual and I can't find any reference to this message. Does anyone know how it could be happening and what it means?