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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: RE: Jeffrey's Vandersteen 5A thread #2 posted by wheezer on June 12, 2011 at 10:00:31:
...Audio Assistant 2 to read levels. The generator has selectable filtered-pinknoise bandwidths (from 1 octave to 1/20 octave) that are tunable like a sinewave generator. I believe I used half-octave noise.
I first get an overall level with the full-band PN for reference. Then I set the frequency of the generator to the labeled frequency of the adjustment pot and read overall level with the PAA2, tweak the pot, and go to the next. Vandersteen is correct in that the adjustments affect other frequencices, so I repeated the process untill I couldn't make the bass levels more or less peaky; some of the pots are full down and some full up.
It really helps to have someone else tweak the pots; else you spend a LOT of time walking, squatting, squinting, and fumbling with a small screwdriver. I found that removing the trim plate (held with 4 screws) helped a lot.
After switching to fullband PN, the 1/3-octave RTA will display the results of your handiwork and the overall system response.
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Follow Ups
- I use an old Hall Engineering noise generator and an Phonic... - jeffreybehr 12:06:54 06/12/11 (0)
- RE: I use an old Hall Engineering noise generator and an Phonic... - wheezer 14:49:56 06/12/11 (0)
- Tired legs? Yes indeed. :-) - jeffreybehr 22:24:48 06/12/11 (0)
- RE: Tired legs? Yes indeed. :-) - wheezer 10:46:08 06/13/11 (0)
- Use the 1Kz tone of the Hall noise generator. As I wrote previously, it's tunable... - jeffreybehr 11:52:54 06/13/11 (0)
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