Michael, Thank you for your time on the phone last week. As we discussed I will do an A/B test with the XLTRT etc. at the back and front of the room when then arrive. The XLTRT must be coming from your shop since I only got the square RTs from Music Direct. In the mean time I moved the side wall echo tunes to a 45 degree angle ceiling to wall. I did do an A/B test on this change using Dire Straights' Love Over Gold and Abby Road. The before order was LOG side 1 and 2 then AR 1 side and 2. Then I reversed the play order for the after change listen. I mention this because I think two other things were going on also. The before was from 6:30 pm to about 8pm and the after was from about 8:30 to 10:30 pm. My electrical supply typically starts improving around 7:30 to 8 pm. Also I think the new electrical wiring is burning in so over time things are improving regardless of any other changes. Comparing the side 2 Abby Road which was back to back: Hear comes the Sun, clarity improved, more mellow, flute sounded more like a flute; Because, bass at end sounded tighter; Sun King, sound stage seemed a little wider, cymbal clearer more like a cymbal; the End, tom toms tighter. Overall everything was a little more musical, less strain (clutter). AB side 1 Come Together, bass had more resonance as did other instruments ( this was true through whole side); Something, bass tighter, stings better but still don't care for them; Maxwell's Hammer, hammer had more clang; Oh Daring,just seemed more musical, voices smoother/mellower; Octopus' Garden (9:20 pm) everything more balanced; I Want you, organ more like an organ. Dire Straights summary: more natural, more dynamic, more together, more resonance, more harmonic, tighter bass, quieter. I will send you an update when I get the the RTs set up on the front and back walls. Thanks again, Bruce