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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: Freddyi... you posted a link some year or two ago.... posted by Ivan303 on June 21, 2007 at 05:30:19:
Fulmer's patentN.C. Fulmer US 2787332 filed 1952 “Loud-Speaker System”
Norman C. Fulmer Google Patent
Norman C. Fulmer's Novemeber 1951 article in Radio and Television News
"A Corner Labyrinth Transducer"
Page One
Page Two
Page Three
Plan Larger
Simulation (I think-?) straight pipe that size
btw - RCA-Fan made a comment to ~effect that a slot the size seen on Fulmer's pipe would not do much - - maybe Bill would elaborate when such an approach is helpful and how much slot is needed and the tradeoffs of doing so.
Edits: 06/21/07
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Follow Ups
- RE: Freddyi... you posted a link some year or two ago....Norman C. Fulmer Nov. 1951 - freddyi 07:27:58 06/21/07 (1)
- May not work much but sure is Kool!!! - Ivan303 14:19:32 06/21/07 (0)
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