How good are Dynaudio D28 tweeters...

[Ultima Thule]

Hi,

sitting on a pair of unused Dynaudio D28 tweeters in their original packings, I have thought about to build something with these eventually and have some questions about them.

My question now is how good are they compared by todays standards, are most of the danish brands (lika Peerless, VIFA, SS...) today better or is the some 20(?) years old D28 design still up to match todays tweeters?

Anyone having any kind of comparisson experiences between D28 and any other tweeter, if so then what tweeter and whats your opinion? Maybe you have not made any A/B test directly but still have any comment, would love to hear from you guys.
Also whats your feeling about D28 sound in general, how do they sound by your opinion?

Cheers Michael

[hooha]

They are horrible... disgusting sounding... shrill... harsh...

To save your ears from the atrocity that Dynaudio calls quality sound, you should package the units up and sent them to me. I will ensure that they get disposed of appropriately.

No? Ok...

The D28's were nice units. Not the absolute best-of-the-best, but nice enough to integrate with a good quality bass mid.

Mark

[jackinnj]

The D28's were used in the Swan IV System described by D'Appolito in Speaker Builder 4/88 -- I love this system:

[Calvin]

Hi,

for an older project that featured 2x 6" drivers in a symmetrical configuration -like in the pic above I searched longly for an tweeter and found it not in the D28 but in a modificated D28. I didn´t like the sound of the D28 very much. Always nice and never harsh but to my taste too soft and even still soft when there should have been something harsh sounding. The modification was just another faceplate and the omission of the ferrofluid. Resolution and ´livelyness´ improved considerably without the FF and without sacrificing what made the D28 such an easygoing tweeter. Many friends were atonished to hear that the D28 cood be such good.
Still though in comparison a newer Vifa XT300 for example sounds tougher, leaner and with more resolution and dynamics. The D28 doesn´t -imo- make any remarkable failures but doesn´t offer the listener everything too. This character leads to a quite relaxed performance You could listen to 24/7/365. If You want to have every fine detail presented obviously modern devices can do better.
And do Yourself the favour and get that damn oil out of that speaker The Dynaudios are concepted as speakers that can withstand high wattage (they have to work with first order filters), so there´s basically no need for the FF.

jauu
Calvin

[Ultima Thule]

Guys, thanks for your opinions, however I have to correct a misstake in my previous post!

Sorry for the inconveniences but after seeing Jack posting the picture of a speaker with D-28 I realized I should have wrote D-28 AF as I ment the one with flat faceplate.

So lets take the same Q's again in my first post but with D-28 AF in our minds!

Cheers Michael

[Mingo]

Talking about ferrofluid. Dynaudio actually made a non-ferrofluid version. The one I used was called D28SQ(square) "ohne ferrofluid" (German for without ferrofluid). It was recommended about 15 years ago as being superior to the ordinary version.

[Ultima Thule]

Mingo,

the SQ means with a square faceplate I guess, found D-28 SQ on www.hifisound.de



I wonder why the FF makes the tweeter sounding worser, does anyone have any opinion wether this may depend on the viscosity mainly or anything else having to do with the fact a fluid also conduct the sondwaves through it out to the poles?
Does D-28 AF having high viscosity FF in comparison, anyone tried to change the FF with better/worser result?

btw, how do you remove the FF from a strong magnet field gap, toilet paper sucking up the fluid?

Cheers Michael

[forr]

The Dynaudio D28AF is the first of a lineage of excellent 28 mm tweeters (Scanspeak, Morel, etc...). It was my reference for very long.

In an Audio Amateur issue, I read either D'Appolito or Linkwitz once removed the ferrofluid from the gap of a D28 : strangely, the resonance lowered.

[hooha]

Originally posted by Ultima Thule
Guys, thanks for your opinions, however I have to correct a misstake in my previous post!

Sorry for the inconveniences but after seeing Jack posting the picture of a speaker with D-28 I realized I should have wrote D-28 AF as I ment the one with flat faceplate.

So lets take the same Q's again in my first post but with D-28 AF in our minds!

Cheers Michael

That's it, last straw buddy! You must send them to me now for providing us false information.

Calvin did hit things on the mark about the D28 - it was mellower than others. To me, the sound was more natural as compared to the 'tizzle' sound of the Vifa's. I did not however notice signs of anything missing in the music though.

It was a welcome addition to the speaker projects of yesteryear. Use it, you won't be sorry.

Mark

[PB2]

http://www.classicspeakerpages.net/d...id=&page=#5242

The gentleman who started that thread is a professional photographer and offers a link to his site, must not forget it
here, nice job Frank M!
http://www.frankmarsi.citymax.com/page/page/403467.htm