Let's talk Tweeters!


Another thread which talked about specific speaker brands was taken over, so I’d like to start a new one.

Mind you, I do not believe in a "best" type of tweeter, nor do I believe in a best brand of speaker, so lets keep that type of conversation out, and use this instead to focus on learning about choices speaker designers make and what that may mean to the end user.

There is no such thing as a speaker driver without trade offs. Some choices must be forsworn in exchange for another.

In the end, the materials used, magnet and motor structure, and crossover choices as well as the listening room come together to make a great speaker, of which there are many. In addition, we all listen for different things. Imaging, sweetness, warmth, detail, dance-ability and even efficiency so there is no single way to measure a driver and rate it against all others.

Also, please keep ads for your 4th dimensional sound or whatever off this thread. Thanks.
erik_squires
Tweeter Mythology isn't unlike Speaker Cone Material Mythology as "doped paper" seems kind of dopey, "nanotube sandwich" sounds kind of foody, and a good designer can make music happen with either. It's still kind of interesting that piles of all sorts of mids and woofers always combine with (generally) one good tweeter, so I do agree with the fact that the mid/woof generators are of primary import. I think there needs to be more research into using actual bird parts for tweeters…I think there's a lot to learn from natural beaks perhaps being grown in labs to save the actual birds, plus there are few tweeters made using feather damping.
I have discovered something:

The very best tweeter to reproduce a Kazoo is an AMT.

That is all.


E
The following isn’t a claim about some objective technical truth; it’s only my subjective assessment:

The best tweeter I’ve ever experienced (or my favorite) is the MBL (omni) tweeters. I remember the first time I encountered the MBL at a CES show many years ago. For every speaker that touted it’s exotic or expensive tweeter, I often ended up hearing the tweeter "look at me!"
Ribbons, domes hard and soft, whatever, some gained clarity and air and verisimilitude over others, but especially with drum cymbal there was always a sense of those sounds being reproduced by a tweeter.

One of the constant disappointments in hi fi reproduction of upper frequencies is how small and thin high frequency instruments become relative to real life - no matter how vivid they are through the system. You just have to tap a drum stick against a ride cymbal to see just how BIG and round that sound is, compared to the squeezed down version that comes out of most hi-fi rigs.  

Then I entered the MBL room and literally for the first time ever I heard drum cymbals sounding like they did in real life - big, rich, round, clean, timbrally bang on...it just didn’t sound like tweeters or mechanical reproduction, it just sounded like drum cymbals. To my ears it put every other speaker’s attempts at natural high frequencies to shame. (I know Jonathan Valin of TAS has made similar comments). This impression of the MBL upper frequencies has remained fairly constant over the years. And now having owned the smaller MBL 121 stand mounted speakers, with their omni mids and tweeters, the impression remains. I’ve never heard life like detail reproduced more effortlessly and naturally. (I also own other speakers, e.g Thiel 3.7s, Waveform, Hales, and have had many other speakers and none I’ve heard at my place, stores or shows do it better.
That said, I heard a demo of the Raidho small monitors that with vocals was mindblowing, and which suggested the MBLs were coming in for some competition in the high frequencies).




@prof


I’m glad you found a commercial speaker brand you like, but I need this thread to avoid devolving into brand flame wars. To avoid this in the future please:

  • Stay focused on tweeters and their manufacturers (when known)
  • Discuss the technology, materials, construction, and trade-offs
  • Discuss comparisons to other similar and dissimilar tweeters

I really wanted to focus this thread on the tweeter drivers, their technology and trade offs. I really wanted to avoid discussing specific consumer speaker brands. I certainly did not mean to start a discussion about entire commercial speaker from top to bottom.

It would be interesting to know if anyone else has heard an omni tweeter they felt delivered outstanding dynamics and realism.

Best,

E

Eric, I understand your desire to focus on tweeters and not speaker brands, but realistically how is prof supposed to talk about omnidirectional tweeters and not mention MBL? Frankly I cannot think of any omnidirectional or quasi-omnidirectional tweeters that are not brand-specific.

While obviously not using the same tweeter technology as MBL, imo there are other speakers that accomplish some of the same things through what might be called a poly-directional configuration, with the actual tweeters being fairly conventional. But this would be getting into implementation, and implementation is brand-specific...

Duke