Hi all, I want to use my TAG AV192 as the centerpiece in a reference quality HT I want to built. Until now I only used the Av192 as a 5.1 processor, because I do not have the place for a 6.1 or 7.1 system. What I wonder is this: 1-Is it better to use 1 extra speaker for Dolby EX and DTS-Es or are two speakers better? 2-Is it OK if I use one of the two back surround outputs of the Av192 and attach it to a Y-cable which then will be connected to two amplifier modules (could be a stereo power amp)? Doing this lets me use the other back surround output for a height channel... I believe that the two channels in a 7.1 system are identical but maybe I am wrong. Maybe THX Ultra 2 processes the two channels in a such a way that they are a bit different. If that would be true, using only one back surround output with the Y-cable would be compromise, wouldn't it? 3-I also wonder if a height channel is really an added value? There is no content for this channel on a dvd, so why bother? Another problem is, that you should use identical speakers in a surround system or at least speakers with identical mids and heighs. If you add a height channel to your system, you need a special speakers that is meant to be built into a ceiling. Brand like KEF and B&W have some nive timbre matched ceiling speakers, but what if I more like speakers from Wilson or Avalon, just no name a few? 4-And here is the final question: If I want to use a height channel, would'nt it be better to use another Y-cable and connect it to two amplifier modules and two ceiling speakers? I thought that could spread the sound a bit more... Thanks for your answers!