| Pulsating spheres - Click HERE for Original Thread |
| dmitriy167 |
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. |
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| Diogenes |
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 |
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| Ron E |
| 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. |
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| Willitwork |
| 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. |
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| el`Ol |
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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| Cal Weldon |
Pulsating Sphere?
Dr. Amar G. Bose would be impressed. |
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| Svante |
| This type of speaker is frequently used for measurement of room acoustics. |
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| pinkmouse |
| This basic design has of course, been used many times before, what interests me is the unusual format of the speaker cones. |
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| Willitwork |
| quote: | Originally posted by Cal Weldon
Pulsating Sphere?
Dr. Amar G. Bose would be impressed. |
Bose. Pulsate Your Lifestyle |
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| phase_accurate |
| quote: | | This type of speaker is frequently used for measurement of room acoustics. |
That was the only statement within this thread so far pointing to the most common use of this topology:
http://www.bksv.com/pdf/Bp1689.pdf
Regards
Charles |
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| soongsc |
| I kind of wonder about how the imaging would be. Also the bass performance. |
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| Ron E |
| Imaging with omnis is usually diffuse - some, like the Bose 901, make really big images.... They seem to have lost favor with most of the public, perhaps through the influence of reviewers, who tend to prefer the pinpoint imaging of minimonitors. |
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