Originally Posted By: bobt
The amp is set up to run 2 sets of speakers...2 sets of connectors. You can shut them down from the front of the amp.

That could be either parallel or series. If you set it to A+B and there's no B does sound still come out of A? If yes, then it is parallel, and impedance will be lower than either speaker. If no, then it is series, and loads will be added together.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris