"Just remember that 1/2=L/R 3/4=C/S and 5/6=RL/RR."

Well on the MD1 there is no C/S but there is C/LFE . Also ther is no RL/RR but there is SuRR so I'm hope I'm right. Looking for confirmation.

G61R, HD621, 3xDSP33 (front, center left), 2xD1500 subs, 2xDSP420 (rears), Sonos everywhere.