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Old 8th June 2011, 10:09 PM   #1
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Default Ball shaped tweeters: any success?

In German magazine funkschau 22 1956 was description of some ball-shaped tweeter. According to the article, tests of such omni-directional speaker was promising, but I have not seen anything real.

Does anybody have any information?
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Old 8th June 2011, 10:20 PM   #2
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Are footballs acceptable? I heard they sound very nice.

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Old 8th June 2011, 11:23 PM   #3
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Given that we haven't seen that many of them over the last 57 years I assume they were not that much of a success.

Looking at the drawing I don't think it would have been truly omni-directional.
Horizontally it certainly covers 360deg but vertically it would appear while the equator expands pole-to-pole shrinks. This would limit vertical dispersion to around 90deg I'd guess.
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Old 8th June 2011, 11:42 PM   #4
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worth trying, but a bit hard to make. Not sure how you would make something that would increase in diameter when driven from one side. Gives me an idea, though.
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Old 8th June 2011, 11:48 PM   #5
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Quote:
Originally Posted by Andrew Eckhardt View Post
Are footballs acceptable? I heard they sound very nice.

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too cheap for me

and what about a circular ribbon ?
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Old 9th June 2011, 12:07 AM   #6
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Quote:
Originally Posted by Ron E View Post
worth trying, but a bit hard to make. Not sure how you would make something that would increase in diameter when driven from one side. Gives me an idea, though.
It was cut vertically, several gaps.
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