Question: Sound Treatment behind the Listener?

Thanks. Good info. I think you are mixing up me and the OP though, just fyi. My rear wall has 4 ASC sound planks on it directly behind my seat (6" apart) and is open on one side to the rest of the house and the other is curretnly (!) drywall. I'm discussing w/ GIK about that now and a few other things. He is suggesting thick bass absorbsion with deflection on the rear wall also. One issue is that I can't go more than 4" since that is also essentialy the wall to the hallway to our bedroom and can't stick out too much.

The good part is my room is very close I think to where I want it - just need to tame some highs.

I do have 4- 20" ASC tube traps in the corners. I also have 7 Stillpoint Aperture 2's.

So, do I really need to absorb the bass frequencies further?

ozzy

I have a 48x56" Rockwool sound absorption panel installed into the wall behind my listening chair. Covered by a print of the Grand Tetons taken at 10,000' . 

In another room I was forced to vacate I had a closet the length of the wall behind. I put absorption on back wall of it and removed the doors. That extended the size of the room and the distance behind the listening chair. It was probably the best sounding dedicated room I have used.

Since you are familiar with ASC tube traps, take a look at Art Noxon’s suggestions.

I believe a couple tube traps with silver buttons facing the listener is what he would recommend behind your listening position. 

Thanks. Who is Art Noxon’s ?

ozzy