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Old 2nd November 2006, 10:45 PM   #1
Consul is offline Consul  United States
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Default A panel speaker design I've never seen before

Does anyone know anything about this basic idea? I'm debating whether or not it's worth $10 for the plans, if only to satisfy my curiosity.

http://www.decware.com/panels.htm

Thanks for the help!
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Old 3rd November 2006, 10:39 AM   #2
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Hi,

It can't be better than the little dynamic driver hidden at the base of the construction which actually drives the membrane indirectly.
Can be fun to build, but I don't expect the same results as electrostatic or ribbon devices. Looks cool, thats true.

MartinJan
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Old 3rd November 2006, 10:59 AM   #3
el`Ol is offline el`Ol  Germany
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I ask myself whether the membrane is really necessary or it is just the little hole that works like an omnidirectional driver.
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Old 3rd November 2006, 02:03 PM   #4
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I see the words "pneumatic" and "reeds". I think it is 2 membrains and air pressure between them gets controled by some type of magnetically controlled reed valve? Just a guess i have no clue what i am talking about.
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Old 3rd November 2006, 02:26 PM   #5
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This 'speaker' actually works as a bipole . Both sides radiate like a 'flat' element. The air pressure coming out of the small hole in the bottom , inflates it and deflates it like a baloon. So both sides are radiating in phase ( bipole ).
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Old 3rd November 2006, 03:19 PM   #6
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Location: Wisconsin....what did you expect?
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Go build a pair and tell us if they're any good.
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Old 3rd November 2006, 04:01 PM   #7
Consul is offline Consul  United States
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I'm seriously considering it. It's a unique enough design that my curiosity is piqued.

Quote:
ak_47_boy wrote:
I see the words "pneumatic" and "reeds". I think it is 2 membrains and air pressure between them gets controled by some type of magnetically controlled reed valve? Just a guess i have no clue what i am talking about.
Hrm, that never occurred to me. It makes a certain amount of sense, actually.

Thanks for the replies, everyone!
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Old 3rd November 2006, 04:28 PM   #8
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You've got some cavity and resonance issues there, but it would be a fun thing to knock together. Whoever builds it should also measure it, my $$$ is on ther frequency response looking ...um...interesting.

Sheldon
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Old 3rd November 2006, 04:37 PM   #9
sreten is offline sreten  United Kingdom
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Hi,

Its fairly obvious the pneumatic motor assembly never happened,
I presume the plans are for the loudspeaker driven prototype.

You certainly won't get plans that meet the stated specification.

I'm not fond of the author penchant to over-hype himself and the things he builds, often to the point of being what I'd call misleading.

/sretn.
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Old 3rd November 2006, 05:13 PM   #10
tade is offline tade  United States
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these speakers house a small woofer in their bass which fires through a slot in the bottom of the membrane.
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