I have a Yamaha RX-A730, 4 Klipsch reference towers, and so far one subwoofer. Our house has an open floor plan first floor and we decided to put speakers in our front room with the tv and in our back room where we entertain and spend most of our time. I recently put a subwoofer in the tv room. When the receiver is set to 2.1 it works great in that room. When we set 7 channel stereo it works great in the first floor. I'd like to add a sub to the back 2 channels but I'm not sure how I should wire it. When I initially set the second room on zone 2 I swear there was a delay in the sound, plus controlling volume evenly was not easily accessible. If I wire the room 2 sub "downstream" of the room, by way of running speaker cable of each tower to the new sub, will that suck power from those towers? That will guarantee that the sub won't turn on unless power is going to those speakers. But I'm thinking that the best option is to use a wireless transmitter to connect to the second sub but I don't think I can assign that sub to only turn on with 7 channel stereo and not with 2.1? the options menus on the receiver don't present me with choices unless I have something already hooked up. Any advice? Open to all suggestions but I don't really want to run a third line clear across the house for the sub hence the transmitter.