I just finished treating my room. I DIY'd it and worked experimentaly and intuitively.
I started with "glare" high frequencies, early reflections. I built 5 1" Fiberglas panels,(fabric covered with speaker cloth). That was a big improvement and encouraged the fabricating of 5 broadband absorbers mounted 3'' away from the wall and Placed around the room (moved many times) until it cleared things up in the mid range and upper bass regions. That encouraged the need to address my old Nemesis, lot's of confusion in deep bass, especially noticeable when driving my system with greater attenuation.
I constructed 2 air-tight 5"deep panels, Fiberglas damped and faced with 1/4" resonating plywood sheet and one with 1/8th" ply to control sightly higher bass frequencies...
I also found it necessary to construct 4 dampers for the wall ceiling interface in areas where I could hear and feel that woolly bass rumble and excessive vibration. For these I used 12" dia Fiberglas pipe wrap 1/2 sections with end caps and pegboard backing (Helmholtz)and of course full front and back fabric covering.
A lot of work to be sure, but the results are stunning.
I had pretty well tweaked myself out. I had addressed hundreds of little things over the many years but I never quite had the clarity of mind to attempt the (the final frontier) the room itself.
I can now drive the heck out my system without negative room interaction, I can hear every bass note clearly, and finally.... a piano sounds like a piano..to say nothing of a massive improvement in staging,specificity, depth, width etc
The research I carried out was all in the Audiogon forums.
I just kept reading stuff and making notes and piecing things together in my mind until I had a kind of map in my head, so I just did it.
Well worth the trouble. My system sounds exciting to me again. I would recommend putting thought and energy into room treatment to anybody.
I started with "glare" high frequencies, early reflections. I built 5 1" Fiberglas panels,(fabric covered with speaker cloth). That was a big improvement and encouraged the fabricating of 5 broadband absorbers mounted 3'' away from the wall and Placed around the room (moved many times) until it cleared things up in the mid range and upper bass regions. That encouraged the need to address my old Nemesis, lot's of confusion in deep bass, especially noticeable when driving my system with greater attenuation.
I constructed 2 air-tight 5"deep panels, Fiberglas damped and faced with 1/4" resonating plywood sheet and one with 1/8th" ply to control sightly higher bass frequencies...
I also found it necessary to construct 4 dampers for the wall ceiling interface in areas where I could hear and feel that woolly bass rumble and excessive vibration. For these I used 12" dia Fiberglas pipe wrap 1/2 sections with end caps and pegboard backing (Helmholtz)and of course full front and back fabric covering.
A lot of work to be sure, but the results are stunning.
I had pretty well tweaked myself out. I had addressed hundreds of little things over the many years but I never quite had the clarity of mind to attempt the (the final frontier) the room itself.
I can now drive the heck out my system without negative room interaction, I can hear every bass note clearly, and finally.... a piano sounds like a piano..to say nothing of a massive improvement in staging,specificity, depth, width etc
The research I carried out was all in the Audiogon forums.
I just kept reading stuff and making notes and piecing things together in my mind until I had a kind of map in my head, so I just did it.
Well worth the trouble. My system sounds exciting to me again. I would recommend putting thought and energy into room treatment to anybody.