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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: DIY Room Lens questions....Jon Risch or ?? posted by Peter J on January 1, 2001 at 14:57:56:
The spacing Jon Risch suggested is as follows:For the left pair of tubes in a set - 1" at the top tapering to 7/8" at the bottom;
For the right pair of tubes in the set - 3/4" at the top tapering to a little over 5/8" at the bottom.That means the 2 gaps aren't the same size and the taper is less than indicated in your post - you're using the top measurement of the wider gap with the botto measurement of the narrower gap.
Somewhere I seem to remember reading a comment that the screen at the bottom slows the exit wave slightly and that this assists in the efficiency of the helmholtz resonater function. I used the toe section of some "sock" type pantyhose since the toes are stronger than the rest of the pantyhose.
David Aiken
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Follow Ups
- Re: DIY Room Lens questions....Jon Risch or ?? - David Aiken 01/1/0123:25:05 01/1/01 (1)
- Quite correct, David. I should have checked(nt) - Paul Tobin 05:57:23 01/2/01 (0)
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