Hi Thomas
I have just put the 5/6 output in to 7/8 no surround output. The mConfig HD621 shows 3 coax digital out Marked "D L/R" "D C/LFE" "D Surr", so 1/2-3/4-5/6 are connected to "SmartLink" MD1 [1-2-3] or MD2 [4-5-6].


Mike

#1: 861v4, HD621, DSP7000, 2xDSP5000, DSP3300,2xAC12, 218, 504, 508, 518, 562V, Oppo-83,DRM-SB880,DMP-900-4K, SKY Q 2TB, ZD9-4K 65", HUMAX HDR-1000 & HDR110 1TB.
#2: 562, 604, Oppo 983, M20s
#3: 602, 541, 204, 263, HD 650 Sennheiser
#4: 208,518, 563 M3s