Riker,

I believe you are saying that he bought a 5.1 system. In addition to the 5.1 system the salesman convinced him to buy another centre channel speaker to place in the middle rear for a 6.1 system.

If this is the case, then it doesn't matter which input you put the rear speaker into (just not another zone), the receiver should be able to be set to a "6.1" system and you can assign the rear 6th channel to that input (I think).

Producer | Composer
www.robbhutzal.com