Originally Posted by beastaudio
Man, you should see a huge improvement tackling the reflections of the mains. There was a significant difference in my system after handling them, especially with the impulse response. I just finished up doing some measurements last night after installing some additional insulation and replacing some of the drop ceiling panels with the ATS acoustic panels and the difference there was even more pronounced. Here are my latest graphs with full room treatments. I almost don't even need audyssey anymore which is something I would LOVE to get to.
Well I ran over to the HVAC supplier and picked up a 10-pack of Knauf 3# ecose panels yesterday, and temporarily set up a few last night and did notice an improvement. I covered an 8'x8' area on each sidewall with five panels per side. They are stood directly on the wall (not spaced a couple inches off the wall) so I will likely see additional improvements when they are permanently installed on 2" offset brackets. I didn't really think I'd see much of an improvement with sidewall treatments as the speakers were set up with coverage patterns to eliminate first reflection points, but it did improve things. I had quite a bit of slap echo which was greatly reduced.
I think I'll notice an even bigger difference if I treat the front wall of my oddly configured room. My room's main problem is that it is wider than it is long, but the rear wall has two very large "window" type openings and a large doorway in the rear wall opening to a highly reflective room behind the listening area. I was hoping the large openings (more than 50% of the rear wall is open) would trick the speakers into thinking the room was longer than it was wide. But it wouldn't solve the problem of the listening area being too "upfront". I think most of my reflection issues are coming off the rear wall(s) at different times, and then reflecting again off the front wall. Unfortunately the area behind the theater is going to be very difficult to treat -- lots of cabinetry, bare walls, doors, and hardwood floors/stairs going down to the main floor. I think I'm going to have to fully treat what is treatable on the actual rear wall of the theater as well to minimize rear reflections coming in out of time alignment with the two different rear walls in play.
Overall I'm still not happy with the way they are set up in-room. For theater it sounds great -- very dynamic and immersive -- but for music only certain types of music are enjoyable. Pink Floyd Money with saxophone is almost painful to the ears when the saxophone starts up. Maybe I'm just getting old and my ears are more sensitive to certain frequencies, but I used to really like that song. In fact I remember pretty much all classic rock sounding better on my large infinity 15" 3.5 way SM150 towers in my dorm room in college. I wish I had a better room layout, but I just don't. I'm hoping with enough room treatments and a proper audyssey XT32 recalibration with the room treatments in place and using the boom mic I just picked up I'll be able to listen to some of my old favorites again. If that doesn't do it, I'll just have to be content with having a dedicated theater, and pick up a nice pair of monitors and a rhythmik servo sub for listening to music in my office. I will say though that the Danley's smoke the Klipsch RF-83's and RC-64 I had in the theater before for both music and HT. No contest.
I was really hoping the coverage pattern of these speakers would overcome the shortcomings of the room layout, and in some ways they have, but just not for all types of music, for my ears. I realize much of this post might be more appropriate in a room acoustics thread, but I thought some prospective Danley owners might like to see some of the difficulties I've had with a difficult room. When I get some time I'll get some current pictures of the room and some measurements taken before and after room treatments and audyssey calibration, and post them here.
Thanks for your input -- it definitely stirred me to find my way over to the HVAC supply store and start treating the room!