Pipe enclosures were design in the 30's by Paul G.A.H. Voigt, it was subject to a patent (GB447749 (A) ― 1936-05-18). The principle is quite simple
Probably inspired by pipe organ tubes.
The image below shows the Herbert Jeschke's Voigt Pipe for a build the pipes for a undetermined 8" driver: the classical way of building the Voigt pipe.
The angle is given by
(atan (/ (+ 8 (/ 3.0 4.0)) 71.0));0.12262114279484264 (/ (* (atan (/ (+ 8 (/ 3.0 4.0)) 71.0)) 180) pi);7.025673961215487
Position of the driver:
Length of the pipe:
Actually it should be removing the area of the speaker at the bottom, is the speaker resonant frequency.
Here is my hack on it with a Fonestar 3inch=7.5cm speaker (20-14.000 Hz, 8 Ω, 89 dB - 1 W/1 m)
Not really a full-driver, but for 10Eurs, who can complain.
(atan (/ 15.0 108));0.13800602365751946 (/ (* (atan (/ 15.0 108)) 180) pi);7.907162702958458
(* 7.0 7.5);52.5
(* 7.0 15.5);108.5
(/ 108.0 (+ 2 (pow (/ (* 7.0 7.5) (* 7.0 15.5)) .5)));40.06516757332509
- EXPERIMENTS WITH TAPERED PIPES BY DAVID B. WEEMS
- The Voigt Pipe: The world's most easy-to-build High End Loudspeaker
- Voigt Pipes -- the simplest hi end loudspeakers you can do-it-yourself!
Some more thoughts soon.Palavras chave/keywords: voigt, speaker, hifi, audio
Última actualização/Last updated: 23-01-2017 [09:21]
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