Smallest room dimensions for good bass to 20hz

Thanks Reubent. Great site.

Thanks for the responces. Looks like as big as i can get would be best. With the right ratio of width length and height to reduce bass nodes.

Uh no. The bigger the room, the (way) more power and the larger the speaker/subwoofer you will need. You don't need a big room to have low frequencies. Actually, most big rooms I have auditioned systems in never sound like they have much bass cause the speakers can't load the room sufficiently. I have friends who have given up big rooms with big amps ($$) and big speakers ($$$) in favor of a little room that gets even more bass extenstion out of a small system. That is my 2 cents. Just didn't want you to only believe part of the answers. Reread my post above. If you want a large room and have a large budget and want subwoofers, then go for it, but you don't need all that for deep bass.

Arthur

Just because the wavelength of the signal is longer than the room dimensions doesn't mean it isn't generated by the seakers and heard/felt by the listener. If that were the case then my headphones would really sound like crap.
In a small room the bass is there to be felt but care must be taken to keep it under control.

Arthur is right - big rooms need lots of powerful bass reproduction - very expensive as loud accurate bass is exponentially expensive. So the sound is indeed far better in a large room provided you have the resources to fill it with sound at necessary high SPL.

The one downside of a large room is long reverb times in the bass...you need plenty of LF absorption on surfaces and soft furnishings to keep this down (wood walls help leak out bass whilst concrete can be bad)....think of how lecture hall or brick gymn sounds awful(this is obviously far to big and too reflective)

My guess is that around 25 to 35 foot dimensions make a good large room with significant improvement over 15 feet. After this improvements diminish and eventually too large is bad....some wall reflections are actually pleasant remember that speakers outside in the open air sound hollow.