Vifa XT25

Jonasz · 22nd December 2006, 08:20 PM

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?

Tenson · 22nd December 2006, 09:09 PM

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.

Patrick Bateman · 22nd December 2006, 09:20 PM

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.

:: PB ::

Tenson · 22nd December 2006, 09:34 PM

Many people prefer wide dispersion though. So I guess it’s just a preference thing again.

Patrick Bateman · 22nd December 2006, 09:48 PM

Quote:

Originally posted by Tenson
Many people prefer wide dispersion though. So I guess it’s 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.

:: PB ::

tinitus · 23rd December 2006, 02:49 AM

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

Michail Bugaria · 23rd December 2006, 09:28 AM

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..

Patrick Bateman · 24th December 2006, 09:00 PM

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.

tinitus · 24th December 2006, 10:54 PM

Sorry, but is it a proven fact, or just a theory ?

Patrick Bateman · 25th December 2006, 02:32 PM

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?

22nd December 2006, 08:20 PM	#1
Jonasz diyAudio Member Join Date: Feb 2003 Location: Kristinehamn	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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22nd December 2006, 09:09 PM	#2
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	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.

22nd December 2006, 09:20 PM	#3
Patrick Bateman diyAudio Member Join Date: Oct 2006	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. :: PB ::

22nd December 2006, 09:34 PM	#4
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	Many people prefer wide dispersion though. So I guess it’s just a preference thing again.

23rd December 2006, 02:49 AM	#6
tinitus diyAudio Moderator Join Date: Nov 2005	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

23rd December 2006, 09:28 AM	#7
Michail Bugaria diyAudio Member Join Date: May 2006	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..

24th December 2006, 10:54 PM	#9
tinitus diyAudio Moderator Join Date: Nov 2005	Sorry, but is it a proven fact, or just a theory ?

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