Acoustically treated dedicated listening room. Dedicated AC line to room. Custom rack has all square tubing filled with sand. Shelves are 1.5" thick butcher block and are isolated from frame with silicone. Asymmetrical setup yields smoothest bass response. Setup in equilateral triangle. Speakers toed-in 30*. Distance between middle of tweeters 84". Distance to ear position in listening seat measured from tweeters 84".