Vifa DX25TG-05-04 Tweeter

critofur · 29th March 2008, 12:45 AM

I spend an inordinate time looking at tweeters online... I keep noticing this tweeter and it looks very nice. The power handling seemed prety impressive for this price range.

The only drawbacks I see are: moderate price (not expensive, but not extremely cheap like some of the OK under $10 tweeters) and, not a small face plate like many of the Neo tweeters.

Are there any tweeters that could crossover lower than this one without costing much more? Any tweeters at a similar or lower price that you like better that wouldn't have to cross higher?

The Vifa D26 small flange Neo tweeter also looks nice, but, production has been shifted to China, and maybe it won't be available for much longer because it's been discontinued?

What to people generally think about Zaph's distortion testing, he seems to put a high priority on low distortion. I'm not positive, but I think the sound of metal cones bothers me a lot more than moderate distortion levels, though, there are some speakers with metal cones that I did really like...

I wish there were more extensive reviews of Zaph's designs compared to some other commercial speakers...

Are there any not-so-expensive tweeters that can be nicely crossed over 1st order at 2Khz?

SamL · 29th March 2008, 03:13 AM

The VifaDX25TG is worth the money.
Troels used it quite a lot in his design. This is what his view when replacing the super expensive SS 7000 with DX25TG.
"I have tried modelling the 4 ohms Vifa DX25TG tweeter. Much easier compared to the troublesome 7000 tweeter. The changes are:
The mid will need a 0.22 mH in replacement of the 0.1 mH. The tweeter goes as follows: 5R6 - 4.7 uF - 0.1 mH to ground - 6.8 uF - 0.33 mH to ground. The LCR filter stays in place, only the 1.0 uF is changed to 1.5 uF. The tweeter notch at 7.5 kHz appears to be derived from tweeter placement and there's not much we can do about it. Now, can the DX25TG really cope with the 7000 tweeter? Indeed so. It sounds great." http://www.troelsgravesen.dk/Ekta.htm

http://www.troelsgravesen.dk/Diy_Lou...r_Projects.htm

http://ldsg.snippets.org/vendors/vifa.php

rabbitz · 29th March 2008, 08:39 AM

It's a nice tweeter but you may want to crossover a tad higher when using 1st order. Here's a design that uses it with a 1st order crossed over at 2500hz.

http://members.optusnet.com.au/~grad...RGOS/Gumby.htm

I've used it at around 2200Hz without dramas but wouldn't like to go lower.

Thawach · 29th March 2008, 08:40 PM

Quote:

that can be nicely crossed over 1st order at 2Khz

Morel tweeter is better than.

http://www.partsexpress.com/pe/showd...number=277-030

Jay_WJ · 30th March 2008, 04:29 AM

Quote:

Originally posted by Thawach

Morel tweeter is better than.

I don't think so. The DX25 has a bit lower harmonic distortions in the critical 1 k to 2 kHz range (according to Zaph's measurements), and a much flatter response up to 7 kHz.

http://www.zaphaudio.com/tweetermishmash/compare.html

Thawach · 30th March 2008, 06:16 AM

oche! jay a good respond and lower price.

-----------------------------------------------------

DNMIIPOH=does not matter if i post on here

JimOfOakCreek · 31st March 2008, 12:15 AM

The Vifa DX25TG is 4 0hms. Can an 8 ohm woofer be used with it or does the woofer HAVE to b 4 ohm as well??

Thawach · 31st March 2008, 01:24 AM

it is not important 4 or 8 ohms. the MTM speaker has two woofer.
and one tweeter = 4 and 8 ohms like the same.

29th March 2008, 12:45 AM	#1
critofur diyAudio Member Join Date: Jan 2004 Location: Columbus, OH	Vifa DX25TG-05-04 Tweeter I spend an inordinate time looking at tweeters online... I keep noticing this tweeter and it looks very nice. The power handling seemed prety impressive for this price range. The only drawbacks I see are: moderate price (not expensive, but not extremely cheap like some of the OK under $10 tweeters) and, not a small face plate like many of the Neo tweeters. Are there any tweeters that could crossover lower than this one without costing much more? Any tweeters at a similar or lower price that you like better that wouldn't have to cross higher? The Vifa D26 small flange Neo tweeter also looks nice, but, production has been shifted to China, and maybe it won't be available for much longer because it's been discontinued? What to people generally think about Zaph's distortion testing, he seems to put a high priority on low distortion. I'm not positive, but I think the sound of metal cones bothers me a lot more than moderate distortion levels, though, there are some speakers with metal cones that I did really like... I wish there were more extensive reviews of Zaph's designs compared to some other commercial speakers... Are there any not-so-expensive tweeters that can be nicely crossed over 1st order at 2Khz? __________________ Critofur http://www.ohmspeakers.com <- all the folks here are my friends

31st March 2008, 12:15 AM	#7
JimOfOakCreek diyAudio Member Join Date: Apr 2007 Location: Oak Creek, WI	The Vifa DX25TG is 4 0hms. Can an 8 ohm woofer be used with it or does the woofer HAVE to b 4 ohm as well?? __________________ HiFi - Jazz - Wine

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29th March 2008, 03:13 AM	#2
SamL diyAudio Member Join Date: Jun 2004 Location: Wgtn	The VifaDX25TG is worth the money. Troels used it quite a lot in his design. This is what his view when replacing the super expensive SS 7000 with DX25TG. "I have tried modelling the 4 ohms Vifa DX25TG tweeter. Much easier compared to the troublesome 7000 tweeter. The changes are: The mid will need a 0.22 mH in replacement of the 0.1 mH. The tweeter goes as follows: 5R6 - 4.7 uF - 0.1 mH to ground - 6.8 uF - 0.33 mH to ground. The LCR filter stays in place, only the 1.0 uF is changed to 1.5 uF. The tweeter notch at 7.5 kHz appears to be derived from tweeter placement and there's not much we can do about it. Now, can the DX25TG really cope with the 7000 tweeter? Indeed so. It sounds great." http://www.troelsgravesen.dk/Ekta.htm http://www.troelsgravesen.dk/Diy_Lou...r_Projects.htm http://ldsg.snippets.org/vendors/vifa.php

29th March 2008, 08:39 AM	#3
rabbitz diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	It's a nice tweeter but you may want to crossover a tad higher when using 1st order. Here's a design that uses it with a 1st order crossed over at 2500hz. http://members.optusnet.com.au/~grad...RGOS/Gumby.htm I've used it at around 2200Hz without dramas but wouldn't like to go lower.

30th March 2008, 06:16 AM	#6
Thawach diyAudio Member Join Date: Dec 2007	oche! jay a good respond and lower price. ----------------------------------------------------- DNMIIPOH=does not matter if i post on here

31st March 2008, 01:24 AM	#8
Thawach diyAudio Member Join Date: Dec 2007	it is not important 4 or 8 ohms. the MTM speaker has two woofer. and one tweeter = 4 and 8 ohms like the same.