About to order a denon avr-1611. Does anyone know if receivers have a 3.0 or 3.1 "surround" mode? Thing is that i got a center speaker for free and intend to put it under my tv and use it in a 3.0 system (no sub or rear speakers). Will the receiver work like this or will the center be totaly useless? Not looking for any kind of surround effect ofcourse.