Hello All; I am building my HT, and will be pre-wiring all of my cables and speaker runs before I close up the walls and ceilings with drywall. I have heard that using 2 rear center speakers is better because the sound is "injected" a little more directly into your ears than with 1 rear speaker blasting at the back of your head. Please assume that I am talking about an amp that has only one output for a rear center, and I want to use 2 speakers. If it has 2 outputs, then it's kind of a non-issue, as they'd be set up for the right resisitance. Would the one-speaker setup be called 6.1, and the 2 rear speaker setup be called 7.1? So here's my question: how do you hook this up? If you wire 2 speakers in parallel (assuming they're 8 ohms each), you'll have 4 ohms of resistance. Isn't that bad for most AVR's? I mean, aren't the amp outputs performing best with an 8 ohm load, and at risk of over-working if they see only a 4 ohm load? Will the 2 center speakers appear louder or quieter than the other speakers in the system? So how is it done? Thanks, Tom, Ottawa Canada.