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Bad room for sound?

I'm starting to address the room acoustic issue with my listening room. I just measured my listening room and the dimensions of 237" by 157" are an almost exact 3:2 ratio. Is this ratio bad for sound? I would expect bass re-enforcement at some frequency.

How can I calculate that frequency? Am i correct that the lowest resonant frequency would be one full wave length across the room (which would also be one and a half full wave lengths down the length of the room)? I think that the speed of sound is about 1140 ft/sec. The room width is about 13 ft. So 1140 ft/sec divided by 13 ft/cycle equals about 88 Hz?

Also, I have hardwood floors that are old and are fairly "springy". I can feel bass vibrations in some parts of the floor but not in others. Should I add support under the floor?

Lastly, I have a Radio Shack SPL meter and I've ordered the first three Stereophile test CD's. Will I be able to measure any bass 'hump' with these tools?

I know that some of these topics have been covered in the past. Sorry if I'm repeating dead issues. Thanks all...
pmi_guy

Showing 1 response by pmi_guy

pmi_guy OP
72 posts
 
Thanks for the responses so far. My ceiling is vaulted from 9' to 11' and so I don't see any problem there. I guess my main concern is that I'm looking at upgrading to some speakers that have significant bass and I don't want to end up too heavy on the bass. Also, I like clean bass, without any "boominess".

I also heard that the Rives solution was very effective at the show. I've already set my speaker position according the the Rives website. The sound has opened up and the imaging has really improved. I'll run the room simulator next. Good work Rives!!!!
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