Awesome thread... Thank you for the knowledge in this forum. I have a Left Center Right... the Center is comprised of (4) 6 inch 8 ohm 2 way in wall speakers wired series/parallel to give my amp an 8ohm resistance. I am about to install as my remodel is almost complete. Based on what I have read and my understand, I won't have any issues. I did like the post from PSG that suggests removing the tweeters as they are more prone to combing and interference pattern issues because of the higher freq... If necessary I will remove 3 of the 4 tweeters if I find they mess with each other. I will let you know how it all works out.