+1 millercarbon.
However, if you don't want to DIY, I used a product called Primacoustic.
They were purchased from Sweetwater Sound. Treated all four walls plus the ceiling in a dedicated room.
Placed panels at all first reflection points, plus others at random.
Used system setup guidelines from Jim Smith's book Get Better Sound.
Improved the sound more than anything else.
Very happy with the results.
The room and the setup will give you half of the sound you will hear.
However, if you don't want to DIY, I used a product called Primacoustic.
They were purchased from Sweetwater Sound. Treated all four walls plus the ceiling in a dedicated room.
Placed panels at all first reflection points, plus others at random.
Used system setup guidelines from Jim Smith's book Get Better Sound.
Improved the sound more than anything else.
Very happy with the results.
The room and the setup will give you half of the sound you will hear.