Pulsating spheres

pinkmouse · 16th September 2006, 02:48 PM

Interesting. I wonder how good they are in the real world?

http://www.reghardware.co.uk/2006/09...here_speakers/

dmitriy167 · 16th September 2006, 03:22 PM

I bet that they don't sound so great. Each "sphere" is 10cm in diameter, and has 11(!) drivers in it. So these would have to be probably very tiny drivers like those found in laptops (no bass at all). It's typical of JVC, or any other large consumer electronics company, to take a good idea and trash it.

If I used this idea, I would use something like Seas 17cm coax drivers in a much larger "sphere". That would be much nicer.

AnthonyPT · 16th September 2006, 04:53 PM

Hi, Kris Metaverso of US enclosure used to make some quitar speakers that look similar. Here is a URl for the site
Go down the pages to see the spheres with multidrivers
A University was the client initially I believe

Regards

AnthonyPT

http://www.usenclosure.com/TESTIMONI...timonials.html

http://www.usenclosure.com/IMAGE%20G...regallery1.htm

AnthonyPT · 16th September 2006, 05:15 PM

HI

Here is another site o these type of speakers

http://www.music.columbia.edu/~dan/a...niversities%22

Big long URL

If it fails try Googling
"Guitar speakers Columbia University / Princeton Universities"

Enjoy

AnthonyPT

Diogenes · 16th September 2006, 05:44 PM

I must admit, dodecahedral speakers rank fairly high on the cool scale for basic shapes, but they're nothing new in the audio world.

Here's a picture of my Design Acoustics D-12s:

Those were built in 1973, hence the groovy blue. They're a fair bit larger than the other units mentioned being 2' in diameter. The solution George Sioles (the designer) took to solve the bass problem was to build these as three-ways, with a 10" long-throw CTS woofer (units were specially chosen for a Fs of 10Hz) pointing down in a ported arrangement.

With dodecahedrons, as with most omnidirectionals, you end up listening to the room, which can be good or bad.

- JP

kvholio · 16th September 2006, 08:14 PM

Not a pulsating sphere in the true sense of the word,
but a marvellous piece of engineering:
http://www.cabasse.com/english/acoustique/scs.php

regards,

Klaas

Ron E · 17th September 2006, 02:44 AM

Quote:

Originally posted by kvholio
Not a pulsating sphere in the true sense of the word,
but a marvellous piece of engineering:

What's marvellous about it? - nothing I can see.
Good polar response is the hallmark of any coaxial, and people have been making coaxials since at least the 1930's. Even the concentric ring thing has been done before, numerous times.

Willitwork · 17th September 2006, 05:42 AM

Quote:

Originally posted by Ron E

What's marvellous about it? - nothing I can see.

Nothing I can see either but very likely something we could hear... be it just because of the manufacturer's reputation for uncompromising designs.

el`Ol · 17th September 2006, 09:01 AM

I find it an econonomically very reasonable decision to develop something like that, given the hype for Grundig Audiorama speakers. But I find the old Audioramas were more beautyful.
http://search.ebay.de/audiorama

Cal Weldon · 17th September 2006, 05:30 PM

Pulsating Sphere?

Dr. Amar G. Bose would be impressed.

16th September 2006, 02:48 PM	#1
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Pulsating spheres Interesting. I wonder how good they are in the real world? http://www.reghardware.co.uk/2006/09...here_speakers/ __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

17th September 2006, 05:30 PM	#10
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Pulsating Sphere? Dr. Amar G. Bose would be impressed. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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16th September 2006, 03:22 PM	#2
dmitriy167 diyAudio Member Join Date: Mar 2004 Location: NJ, USA	I bet that they don't sound so great. Each "sphere" is 10cm in diameter, and has 11(!) drivers in it. So these would have to be probably very tiny drivers like those found in laptops (no bass at all). It's typical of JVC, or any other large consumer electronics company, to take a good idea and trash it. If I used this idea, I would use something like Seas 17cm coax drivers in a much larger "sphere". That would be much nicer.

16th September 2006, 04:53 PM	#3
AnthonyPT diyAudio Member Join Date: Oct 2004	Hi, Kris Metaverso of US enclosure used to make some quitar speakers that look similar. Here is a URl for the site Go down the pages to see the spheres with multidrivers A University was the client initially I believe Regards AnthonyPT http://www.usenclosure.com/TESTIMONI...timonials.html http://www.usenclosure.com/IMAGE%20G...regallery1.htm

16th September 2006, 05:15 PM	#4
AnthonyPT diyAudio Member Join Date: Oct 2004	HI Here is another site o these type of speakers http://www.music.columbia.edu/~dan/a...niversities%22 Big long URL If it fails try Googling "Guitar speakers Columbia University / Princeton Universities" Enjoy AnthonyPT

16th September 2006, 05:44 PM	#5
Diogenes diyAudio Member Join Date: Jun 2004 Location: Ellensburg, WA	I must admit, dodecahedral speakers rank fairly high on the cool scale for basic shapes, but they're nothing new in the audio world. Here's a picture of my Design Acoustics D-12s: Those were built in 1973, hence the groovy blue. They're a fair bit larger than the other units mentioned being 2' in diameter. The solution George Sioles (the designer) took to solve the bass problem was to build these as three-ways, with a 10" long-throw CTS woofer (units were specially chosen for a Fs of 10Hz) pointing down in a ported arrangement. With dodecahedrons, as with most omnidirectionals, you end up listening to the room, which can be good or bad. - JP

16th September 2006, 08:14 PM	#6
kvholio diyAudio Member Join Date: Jul 2005 Location: leeuwarden	Not a pulsating sphere in the true sense of the word, but a marvellous piece of engineering: http://www.cabasse.com/english/acoustique/scs.php regards, Klaas

17th September 2006, 09:01 AM	#9
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	I find it an econonomically very reasonable decision to develop something like that, given the hype for Grundig Audiorama speakers. But I find the old Audioramas were more beautyful. http://search.ebay.de/audiorama

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