You'd have the same problem with the Xantech connecting block. The "catch" is, to use the SmartPad3's "global" commands, they need to be on the same IR bus -- but, to keep the receivers separate, you need zoned IR.

Possible solutions:

1. Use a multi-room pre-amp and amplifier(s), which can respond to zoned *or* global commands.

2. Use different brands of receivers in each zone, so they can all share the same IR bus, without responding to each others commands.

3. Use an "IR Router" with same-brand receivers on a common IR bus. Xantech and Niles both make them -- RT8, I think.

4. Connect the "common" output of the IRZ6 to the data terminals of the individual keypads, using diodes to keep the signal from coming back into the IRZ. I haven't tried this and it may even not work. If you're not *exactly* sure what I'm talking about, skip it.

5. Use an Ocelot, (or the new Xantech MAC1) programmed to broadcast commands to the other receivers, in response to specific keypad signals (like an "All Off").

I'd use #1, #3, or #5...