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Old 22nd December 2006, 08:20 PM   #1
Jonasz is offline Jonasz  Sweden
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Default Vifa XT25

I've seen a lot of views on the XT25. Half of them say it's more or less worthless due to the off axis response. Tha other half says it's a really good, not to say tha best, tweeter there is!

So wich is it? Good or bad?
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Old 22nd December 2006, 09:09 PM   #2
Tenson is offline Tenson  United Kingdom
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There are a few comments about it in Zaphs new design.

http://www.zaphaudio.com/ZD5.html

He tilts the on axis response up a bit to compensate for the fast falling off-axis response.

If you don't need a very low Xover it seems like a great tweeter for the money.
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Old 22nd December 2006, 09:20 PM   #3
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What's wrong with the off axis response? The XT25 has an integrated waveguide. If anything, I would expect it to have SUPERIOR pattern control to a conventional dome.

Of course, the waveguide is only good for an octave or so. It's a very VERY small waveguide.

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Old 22nd December 2006, 09:34 PM   #4
Tenson is offline Tenson  United Kingdom
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Many people prefer wide dispersion though. So I guess itís just a preference thing again.
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Old 22nd December 2006, 09:48 PM   #5
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Quote:
Originally posted by Tenson
Many people prefer wide dispersion though. So I guess itís just a preference thing again.
Here are two choices:

1. A tweeter with wide bandwidth, that quickly collapses at one frequency.
2. A tweeter with wide bandwidth down low, that gradually narrows at high frequency.

If I'm not mistaken, the xt25 was engineered to provide the latter.

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Old 23rd December 2006, 02:49 AM   #6
tinitus is offline tinitus  Europe
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You cannot expect it to be the best there is, at this low cost

But its good enough to build a top world class speaker


And I think all this debate about off axiss response is way overrated
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Old 23rd December 2006, 09:28 AM   #7
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At correct preparation XT25 - very good driver.
But new Peerless HDS tweeter is even better
And in the future, I plan to replace with them XT25..
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Old 24th December 2006, 09:00 PM   #8
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Quote:
Originally posted by tinitus
You cannot expect it to be the best there is, at this low cost

But its good enough to build a top world class speaker


And I think all this debate about off axiss response is way overrated
I would say that one of the reasons my speakers sound so good is that the off-axis response is just as important as the on-axis response.
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Old 24th December 2006, 10:54 PM   #9
tinitus is offline tinitus  Europe
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Sorry, but is it a proven fact, or just a theory ?
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Old 25th December 2006, 02:32 PM   #10
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Quote:
Originally posted by tinitus
Sorry, but is it a proven fact, or just a theory ?
Absolutely. Google Earl Geddes, Floyd Toole, et al. Where you been?
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