The fronts and backs of the LFR1100s have to be provided with their own amplification channel. So a stereo pair requires four channels. The easiest way to figure out the needed channels for any number of speakers when including the LFRs you need two additional channels above what you'd need otherwise.


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