Originally Posted by Frank
You need four, not eight, AC12s for a 7.1 DSP system.

Understood. I was just making the point that, while each AC12 can support 2 speakers, it can also support 1.

Given that the concept is to maximize the runs of the Speakerlink balanced digital audio and minimize interference from the comms/SPDIF, wouldn't 1 Speakerlink run to each speaker be better?

It is possible that the 2nd comms/SPDIF run from the second speaker can be longer than the run from the 861v6 to the 1st speaker.