Hello Mdrew,
Hope you are well. Yes, the low level inputs are for the connection from the receiver. Here is a good quality Y-splitter:
These are sold in pairs unfortunately, but are better than the cable versions. You only need one. If you get a cable type you will need one male to two female connectors.
Stick this on the Right(mono) input on the subwoofer, then plug your subwoofer output from Zone 1 and the right channel from Zone 2 into it. Only limitation is you will not be able to use the subwoofer simultaneously for both Zones, only one Zone at a time.
I am curious to see the shipping costs for the Cylinder subs, they are lighter so should be cheaper.
Hope this helps.
Later,
TonyM
