A panel speaker design I've never seen before

Consul · 2nd November 2006, 10:45 PM

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!

MJ Dijkstra · 3rd November 2006, 10:39 AM

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

el`Ol · 3rd November 2006, 10:59 AM

I ask myself whether the membrane is really necessary or it is just the little hole that works like an omnidirectional driver.

ak_47_boy · 3rd November 2006, 02:03 PM

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.

ashok · 3rd November 2006, 02:26 PM

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 ).

Spasticteapot · 3rd November 2006, 03:19 PM

Go build a pair and tell us if they're any good.

Consul · 3rd November 2006, 04:01 PM

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!

stokessd · 3rd November 2006, 04:28 PM

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

sreten · 3rd November 2006, 04:37 PM

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.

tade · 3rd November 2006, 05:13 PM

these speakers house a small woofer in their bass which fires through a slot in the bottom of the membrane.

2nd November 2006, 10:45 PM	#1
Consul diyAudio Member Join Date: Nov 2003 Location: Port Huron, Michigan, USA	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!

3rd November 2006, 10:39 AM	#2
MJ Dijkstra diyAudio Member Join Date: Apr 2005 Location: Utrecht	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 __________________ drs M.J. Dijkstra

3rd November 2006, 02:26 PM	#5
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	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 ). __________________ AM

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3rd November 2006, 10:59 AM	#3
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	I ask myself whether the membrane is really necessary or it is just the little hole that works like an omnidirectional driver.

3rd November 2006, 02:03 PM	#4
ak_47_boy diyAudio Member Join Date: Sep 2006	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.

3rd November 2006, 03:19 PM	#6
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Go build a pair and tell us if they're any good.

3rd November 2006, 04:28 PM	#8
stokessd diyAudio Member Join Date: Nov 2002 Location: Fort Wayne, IN	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

3rd November 2006, 04:37 PM	#9
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	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.

3rd November 2006, 05:13 PM	#10
tade diyAudio Member Join Date: Feb 2005 Location: Ralieigh nc	these speakers house a small woofer in their bass which fires through a slot in the bottom of the membrane.

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