Yup, but jusdicous damping of the walls with accoustic foams or fiber glass does wonders. When you add furniture it helps break up some of the reflected bass. It also deadens the room to a remarkable degree. Hanging heavy carpets about 2 inches from the wall also helps.
Get creative and don't spend a lot of money.
Also stuff those joists with the new corning pink stuff in the plastic sheaths. I wouldn't recommend using straight glass without a barrier for health reasons.
Also 1X4 frames with 4-6" glass covered by printed sheets stapled to the frames make dandy absorbers. Position about 4 inches from the wall. In the corners use the 8" thick and use 1X8's and place at a diagonal. Build them about 3 foot wide for nice corner bass traps. Cover them with sheets as well. I use nylon mesh screen over the glass, and then cover with decorative bedding sheets with a pleasing print. Low bucks and work like a charm.
The basement is the best place for audio.
jeff
Get creative and don't spend a lot of money.
Also stuff those joists with the new corning pink stuff in the plastic sheaths. I wouldn't recommend using straight glass without a barrier for health reasons.
Also 1X4 frames with 4-6" glass covered by printed sheets stapled to the frames make dandy absorbers. Position about 4 inches from the wall. In the corners use the 8" thick and use 1X8's and place at a diagonal. Build them about 3 foot wide for nice corner bass traps. Cover them with sheets as well. I use nylon mesh screen over the glass, and then cover with decorative bedding sheets with a pleasing print. Low bucks and work like a charm.
The basement is the best place for audio.
jeff