Something else I wonder:
Assuming I have the idea of the cable correct, this cable likely runs along the backside or underneath between each channel as some kind of interconnect; is it carrying audio signals of any kind, or only control signals? Do those lines need to be shielded? Does it need twisted-pair style ribbon cable (flattened-out at the connectors)? Maybe the "shielding" is done by a ground-line in-between each signal line or something of that nature?