[versus rider]

Hi my first look at treatment, I have a dedicated room of modest size. 3m x 3m tapering to 2.5m at the seating end. Bigger would be nice but at least it's my own space. Floor is raised wood with a void above soil, walls are stud work plasterboard with acoustic insulation, ceiling is at 2.5m with plasterboard and acoustic insulation. This is built inside a timber frame barn so has another wall surrounding it with a void. Speakers are 15" bass drivers in open backed box ( open baffle ) 200hz tractrix horns with compression drivers and raal ribbons. Tri-amped all valve amplifiers. Listening distance is about 2.5m. Surprisingly it sounds as good as my old room with solid walls and floor. I also run deqx as crossover  with room eq though not used. Question is would there be a basic room treatment package that if nothing else wouldn't make it sound worse. Would a diffuser on the ceiling be a good idea regardless of the current sound quality

[versus rider]

  ?

[rw@cn]

Wait until after CES.

[bpape]

Sorry - didn't see this earlier.

I would start out with Tri Traps in the front corners of the room and get a couple of Monster Traps centered behind you on the rear wall. If you pull the seat forward a bit to get in a better place for bass response, you can add the Scatter Plates to the Monsters to help with a bit of imaging depth and cut the high absorption by about 1/2

After that it's all about how you want to deal with side wall reflections. Absorption or diffusion can be used based on preference.

Bryan