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room treatment effectiveness

Before I spend money on room treatment, I would like to hear of positve/negative experiences and whether the results are objectively measurable or merely subjective.

My local dealer had a sound room (now a storage room) with a pronounced 100hz boom and he said they installed 16 inch tube traps from floor to ceiling in each corner and the measured difference was only .5db which isn't much. I don't want to go down this road.

I have looked at GIK acoustic and their products are reasonable priced. I have read some favorable comments on their products. I'm sure there is a limit on what can be done with add on products. Are they all good for a few tenths of a db or can one expect to correct for 5 or 6 db?
rhljazz

Showing 2 responses by darkmoebius

darkmoebius
900 posts
 
Do a drawing of your room with dimensions, furniture placement, etc and post this question on the Room Acoustics forum sponsored by Rives Audio. They will answer just about any question and are extremely helpful.

You really need to apply a methodical approach to treatment, otherwise you are simply shooting blind and and results, good or bad, will likely resemble that.

BTW, have you measured response with your listening position moved forward or backwards a few inches to a foot or so?
darkmoebius
900 posts
 
2chnlben:
However, my audio dealer friend (whom I have great respect for) has informed me that, unless the traps are EXTREMELY large, they will have no effect on the lowest frequencies, which are, in my case, the frequencies that are causing the problem.
Exactly what frequency range are you having trouble with?

ASC tube traps(.pdf) offer full wave bandwidth absorption down to:
9” 110Hz
11” 90Hz
13” 70Hz
16” 55Hz
20” 30Hz

Their fractional tube traps(1/4 & 1/2) take up even less room and can provide full bandwidth absorption down to 55Hz. The quarter rounds are perfect for corners.
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