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Old 13th May 2004, 06:42 AM   #1
Ap is offline Ap
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Question Any success with dome midrange?

Have been doing some modelling on both the Jaycar & Vifa dome mids (3") and it seems the xover to woofer integration is really tricky requiring higher order low-pass on the woofer.


Has anyone had success with them?
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Old 13th May 2004, 11:04 AM   #2
sreten is offline sreten  United Kingdom
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Yes it is extremely tricky as c/o is usually in the middle of baffle step.

Added to that fundamantal resonance suppression and excursion
limits of the mid-dome also need careful consideration.

An "off the shelf" crossover as suggested by Jaycar is an utter no-no.

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Old 14th May 2004, 05:28 AM   #3
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Definitely wouldnt go for an 'off-the shelf' xover.
I seem to get reasonable response using both resonance & impedance Eq, but the parts count for xover gets a bit on the high side (8 components).
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Old 14th May 2004, 12:33 PM   #4
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I think the dome midrange could be used in the
center of a waveguide to overcome the baffle problem.
There is one thing to note though: The dome must
not be soft material or you will end up with distortion.
Soft domes are not suitable to waveguides.
Aluminium or titanium dome should work (I suppose).
I haven't tried a waveguide with a dome midrange yet,
but I suspect that it might work with no problem
(of course by assuming that there is also a similarly
sized and shaped waveguide for the tweeter driver).
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Old 14th May 2004, 12:53 PM   #5
gary f is offline gary f  Canada
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There is some good design using dome midrange such as Vifa D75, Morel MDM 55 or LPG textile dome. But I never heard them.
It is sure that crossover design is easier with a cone mid but the dome design is nevertheless attractive....

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Old 16th May 2004, 11:33 PM   #6
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Karolina - by waveguide I guess you mean a type of horn?

Garyf - any more info on designs using the d75/mdm55 or LPG > any links on the web?

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