In Reply to: RE: Two kinds: posted by BigguyinATL on September 9, 2016 at 10:44:49:
Fortunately, the panel and the diffuser are rarely parallel. In my case, they'd be offset by about 11 or 12 degrees. Panels are vertical.
The OTHER kind of diffuser I've seen is the 1D QRD, which is a big box with steps in calculated depths and all the same width. These can be pretty much as LONG (tall) as you wish. I don't have the facilities to construct these, since I'd need a good table saw and MUCH more construction space than currently available.
Calculators I've seen are 'seeded' with a Prime Number which may be key in avoiding 'cogging' frequencies.
How is a 2D QRD behind a panel any WORSE than the bare wall?
Too much is never enough
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Follow Ups
- RE: Two kinds: - pictureguy 11:37:48 09/09/16 (0)