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Ribbon super tweeter?
Ribbon super tweeter?
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Old 7th March 2010, 02:35 PM   #1
martyh is offline martyh  United States
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Join Date: Feb 2004
Location: Wisconsin
Default Ribbon super tweeter?

Looking at the various plots of diy and commercial ribbons I generally notice a roll off in the highest octave. Is it possible to build a long ribbon tweeter that extends further on the top end by using very narrow ribbon maybe 1/16 or so wide if the intent is to use it above 10K?
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Old 11th March 2010, 12:30 AM   #2
Few is offline Few  United States
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Join Date: Apr 2004
Location: Maine, USA
I think there's nothing inherent in the operation of a ribbon that would limit its high frequency response to 10 kHz. If the ribbon is too massive (the material is too thick) it might roll off the highs, but I don't think it's true that ribbons in general have a hard time reaching 20 kHz. Can you point to some measurements that provide examples of the tendency you mentioned?
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Old 11th March 2010, 12:39 AM   #3
tinitus is offline tinitus  Europe
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Ribbon super tweeter?
Originally Posted by martyh View Post

1/16” or so wide if the intent is to use it above 10K?
1/16" ? thats close to nothing ....1/4" would makes sense that high

Im actually making one right now about 5" long, with iron as poles

My design is done upon the magnets I had already and may not be optimal

But yes, if a ribbon rolls off early its basicly because of the weight
And its common because many people want it to go low, by making it bigger

A small ribbon is very easy to build
Major problem is impedance, and another reason to go big, but more complicated construction
sometimes we know very little, and sometimes we know too much
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