Hi all,
I've got a pair Dynaudio Audience 72SE speakers, and I'm pretty sure the tweeters are giving a reduced output. I'm not sure there's any way of easily testing this (I don't have the necessary equipment), so I'm considering replacements. I'd be glad to try to cobble something together to test them though, with a little advice.
The tweeters are D280s, so if I'm to replace them, and assuming I can't get hold of the same, what should I be looking for in terms of spec parameters to get as close to drop-in replacements as I can? Any suggestions on tweeters that might work? I see Morel are often compared, but I'm not confident enough to buy something without some guidance. What about the Chinese David Louis tweeters on eBay? Are they any good?
Cheers!
I've got a pair Dynaudio Audience 72SE speakers, and I'm pretty sure the tweeters are giving a reduced output. I'm not sure there's any way of easily testing this (I don't have the necessary equipment), so I'm considering replacements. I'd be glad to try to cobble something together to test them though, with a little advice.
The tweeters are D280s, so if I'm to replace them, and assuming I can't get hold of the same, what should I be looking for in terms of spec parameters to get as close to drop-in replacements as I can? Any suggestions on tweeters that might work? I see Morel are often compared, but I'm not confident enough to buy something without some guidance. What about the Chinese David Louis tweeters on eBay? Are they any good?
Cheers!
Run a 20-20k sweep through them.
One speaker at a time.
You can download sweep tests from the net.
Burn to cd, run via usb, etc and so forth.
Contacted Dynaudio ?
From memory they have reasonable stock of some replacement drivers.
One speaker at a time.
You can download sweep tests from the net.
Burn to cd, run via usb, etc and so forth.
Contacted Dynaudio ?
From memory they have reasonable stock of some replacement drivers.
If you need them rebuilt / serviced - Dynaudio (D) will probably still refurb them to new condition. I had a pair of D28/2 refurbished a couple of years ago. It's not cheap, but they come back like new.
Not sure if you can deal direct with Dynaudio (D) as a consumer, I went via Jan at www.hifisound.de
Not sure if you can deal direct with Dynaudio (D) as a consumer, I went via Jan at www.hifisound.de
If there is anything a DIYer ought to own in order to be able to inspect the condition of a drive unit, then an ARTA labs software suite or a similar one that you can freely download. It does measure everything that counts, impedance and frequency response. Both of these would probably point to an issue. The reduced output should be tested at standard voltage 2,83V at 1m distance from the microphone. These units are supposed to measure around 90 dB/2,83V/1m so the reference level is known and the actual spl is to be found out. The impedance measurement jig is also easily built and the procedure is explained in the LIMP module user manual.
I don't know if the ferrofluid might be the cause, may be but I would not open up a tweeter until first checked with impedance measurement. The dome/coil assembly is easily taken out once the screws are out and it's self aligning, at least with my units D260 and D28/2. I have not had any problems with mine and these are about 17 years old.
For those people who don't want to engage themselves, the reconditioned units from manufacturer are the best solution, and pricey.
I don't know if the ferrofluid might be the cause, may be but I would not open up a tweeter until first checked with impedance measurement. The dome/coil assembly is easily taken out once the screws are out and it's self aligning, at least with my units D260 and D28/2. I have not had any problems with mine and these are about 17 years old.
For those people who don't want to engage themselves, the reconditioned units from manufacturer are the best solution, and pricey.
Thanks guys.
I've had a quote for a replacement pair...£457!
I think I'll be testing them one way or another!
I've had a quote for a replacement pair...£457!
I think I'll be testing them one way or another!
A useful little sweep generator (sweepgen) is here if you don't trust your ears with a familiar recording: Audio Tools - from David Taylor, Edinburgh.
Much can go wrong with tweeters. Ferrofluid can dry up: Blue Aran - Professional Sound and Lighting.
Voicecoils can turn into bird's nests. Things can come apart:
I thought a Morel MDT32S 1" Textile Dome Tweeter, Aluminum Face Plate, Rear chamber was a reasonable replacement, but the original poster got a bit phased when I said some simple level adjustment might be necessary and just shelled out for exact replacements.
Dyanaudio tend to use shallow 6dB filters. Audience 72 SE speakers - Buy Audience 72 SE speakers here
And their tweeters have long tinsel leads to allow for exceptional excursion. A typical dynaudio filter is below.
Much can go wrong with tweeters. Ferrofluid can dry up: Blue Aran - Professional Sound and Lighting.
Voicecoils can turn into bird's nests. Things can come apart:
I thought a Morel MDT32S 1" Textile Dome Tweeter, Aluminum Face Plate, Rear chamber was a reasonable replacement, but the original poster got a bit phased when I said some simple level adjustment might be necessary and just shelled out for exact replacements.
Dyanaudio tend to use shallow 6dB filters. Audience 72 SE speakers - Buy Audience 72 SE speakers here
And their tweeters have long tinsel leads to allow for exceptional excursion. A typical dynaudio filter is below.
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