Auxillary amps.

I'm trying to drive a Mac MC252 through the low level outputs of a 4806 but I can't generate a 2-channel signal. The only success I've had so far, is by lashing to the pre-out terminals marked "Surround" in the multi channel complex and switching to a multi channel mode. Zone 2 and/or 3 outputs are deader than a doornail and I followed the manual religously.
Now, I'm not the sharpest knife in the drawer when it comes to all the whizbang bits and bytes stuff, so I'm sure that I haven't properly fumigated the asperator, re-aligned the giblin pin on the wobbliin' shaft, or something equally as arcane. Consequently, I need help figuring out which button to push. If there is anyone out there that knows what I'm doing wrong, Please set me straight before I set fire to this thing.

Thanks,
JB