zaphod said:
hmm, any room dimensions are going to share a common multiple - just multiply them together. how important is the common multiple? i've always paid more attention to the LCD.
the easy solution in trying to keep the dimensions relatively prime is to build the room with one measurement a prime number.
and don't forget the vertical dimension. that 16X13X8 room has the height evenly divisable into the length. not as crucial as having the length and width relatively prime, but still a consideration.
You are correct, the multiple isn't that important. The LCD <b>is</b> far more important. Regardless, the best room is none, which would allow the signal from the speakers to reach your ears with no reflection. Since that is at best impractical, a room with no parallel walls sized to the "Golden Ratio" of approx. 1.618:1 would give no common denominator in any dimension and would distribute the standing waves generated acroos the audio spectrum. Proper room dampening would then be used to clean up any remaining resonances, particularly in the bottom octaves.
Those of you with small, stand mounted speakers and a patio can get a glimpse of the free field response of your speakers by placing them outside and listening in the near field. It is very informative to do so IMO.