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Old 20th February 2010, 04:07 AM   #1
wixy is offline wixy  Australia
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Default Dallas III plans?

Just wondering if anyone has any plans for the Dallas III speaker? (i.e. the curvy dallas, using FE206E's).
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Old 20th February 2010, 04:17 AM   #2
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AFAIK that was a 1-off by a diyer.

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Old 20th February 2010, 07:22 AM   #3
wixy is offline wixy  Australia
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Dang.

What if one was to just modify the Dallas II plan so that the internals were curved? Is this likely to give a satisfactory result or would there need to be some science to it?
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Old 20th February 2010, 07:30 AM   #4
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That's what i think this fellow did.

Click the image to open in full size.

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Old 6th April 2013, 03:09 PM   #5
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Default Did you ever find dallas 3 plans

NT.
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Old 6th April 2013, 04:54 PM   #6
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There aren't any AFAIK, for the excellent reason, as Dave said, that there's not exactly any such thing. 'Dallas III' was a smoothed out Dallas II that one DIYer built -somebody evidently coined the term, but it was never one Ron employed. If you want to create one, smooth out Dallas II like the above, and you're there. Be aware though that the main result of this will be to improve efficiency at the top of the horn's operating BW, which isn't necessarily such a good idea. Lower down, the wavelengths are too long to be especially bothered one way or the other.
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