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Multi-Way Conventional loudspeakers with crossovers

Vifa D25AG vs XT25TG30
Vifa D25AG vs XT25TG30
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Old 21st November 2008, 09:25 PM   #11
Professor smith is offline Professor smith  United Kingdom
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just a question...
I actually upgraded the Vifa D25AG tweeters in my speakers so as a result I have a used pair.

Can they be sold for much or are they worthless?

They are in working order since I just replaced them and have not touched them since..

Thanks
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Old 22nd November 2008, 11:43 PM   #12
chasmo is offline chasmo  United States
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Default Try eBay

Quote:
...Vifa D25AG tweeters ...I have a used pair.
They are still in demand for use with Tube amps, sincve they can be bright with most(cheap)solid state equipment.

If I were you I'd clean them up and offer them on eBay. Since they cost about US$35 here when new, you may be able to get at least half of that from someone who knows about them.
-Just my"2 cents"(pence).
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Old 23rd November 2008, 03:32 AM   #13
dave_gerecke is offline dave_gerecke  United States
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Hello Professor Smith, I would agree with chasmo that they still have value. I was just at the Madisound website, new ones go for $43 each.

Peace,

Dave

P.S. Depending on condition and price, I may be interested.
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Old 23rd November 2008, 04:51 AM   #14
jomatecc is offline jomatecc
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Have mine for about 16 years now changed voice coil once in 98 because of oscillating amps, but they sound just as airy and transparent as when I first bought them. I agree with chasmo depending on the condition youll have no problem selling these gems.
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Old 23rd November 2008, 08:40 PM   #15
Professor smith is offline Professor smith  United Kingdom
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ok thanks people.

I will probably put them up on ebay. Can I ask, how do I check them?

Even though I have not touched them since before how do I avoid a situation where they are sold on ebay then the buyer may say that they are faulty?

will they sell even if USED? I want make it clear they are used but not faulty to my knowledge.
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Old 23rd November 2008, 09:01 PM   #16
dave_gerecke is offline dave_gerecke  United States
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Hello Professor Smith, The quick check to do is put a ohmmeter across the terminals to check for continuity. They should read around 0.5 to 2 ohms below what the impedance is listed as. This is a very approximate set of numbers, and is based upon the fact that you are taking a measurement of the DC resistance of the voicecoil, which is only one part of the entire impedance of the driver. To actually do a full test, you would have to either sweep them with a signal generator (making sure not to apply too much power, or go below the operating frequency range of the tweeter, this may damage them), or you would need to hook them up to an amp, through an appropriate crossover, and listen to them.

Cheers,

Dave Gerecke
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Old 23rd November 2008, 09:20 PM   #17
Professor smith is offline Professor smith  United Kingdom
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hi

I have emailed you since you expressed an interest in them.

I understand that there are two different models. I do not know if this relates to the fact that the current model is made in china whereas the previous ones were made in denmark?

The exact part number stated on mine is D25AG 05 06 and are made in denmark.

The ones listed on madisound are D25 AG 35 06.
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