My apologies for not responding sooner on this thread. It took "a while" for me to actually get the speakers (I got them last week)

I bought a little Y connector but that is configured to run left and right channels into one stereo RCA jack.

I've ended up putting the Sony on top of the sub and then swapping the subwoofer cables as needed.

I'll call Hsu and see if they can give me some help.