Are there any current production great speakers using AMT tweeters?


Back in the day, I had fallen in love with the ESS Heil AMT speakers, which were always too large and too expensive.    Now that I am looking for a new speaker, I am wondering if there are any current high end monitors that use these tweeters?  Or have good ribbons made the AMT tweeters less desirable?

My budget is in the $5k to $15k range, new or used, so don’t tell me about some of the $1k speakers that I know are out there, no matter how good they might be.

Stand mount is preferable, but a floor standing with a small footprint might be workable in my smallish room.

 

meiatflask

The Philharmonic BMR HT Towers have AMTs produced by Mundorf. It’s the best AMT I’ve encountered. I can only presume the most expensive Mundorf AMTs must sound absolutely incredible. I rate the Mundorf AMT and RAAL Ribbon in the Philharmonic series on par with the very best tweeters of any type in terms of pristine, non-fatiguing, yet extended highs. Even $500/each Satori Be tweeters don’t quite match the Mundorfs or RAALs in that regard. 
 

Another poster claimed all AMTs/Ribbons produce image shift. That isn’t remotely true IME, and I’ve heard/owned some of the best imaging monitors available for reference. I can only hypothesize that those he heard had poorly designed crossovers, or they were simply cheap examples like those used by Wharfedale. Some designers attempt to cross them too low or shallow which can result in comb-filtering.

Since both designs are wide dispersion, they are often best implemented in a three way, so that the whole mid/high frequency range has a similar dispersion pattern. It’s important to note AMTs function differently from ribbons. They tend to have similar dispersion characteristics but AMTs have the advantage of better power handling and robustness/longevity. 

Anyhow, with the Philharmonic HT Towers, not only do you get one of the best tweeters out there, you get top notch midrange performance, along with fast, defined and deep bass from the Purifi woofers. All in compact, stout and beautifully finished cabinets for $5K/pair. Additionally, they can play louder, with lower distortion, than many tower speakers of twice their size and price. These speakers have science-backed design principles and state of the art drivers. They are probably the best sounding passive speakers under $10K/pair in terms of what you get from the whole package, unless you go the route of DIY. 

 

This is why I like AI for evaluations. It's probably not 100% because with the ESS and an improved crossover it's best guess, but AIs guess is more educated than mine.

Chat on ESS AMT 1D REVIVAL VS Philharmonic HT Towers

Knowing your preferences, I actually think this is a much closer contest than the Philharmonic vs. most conventional speakers.
Compared to the ESS AMT-1D Revival
Dynamics
Winner: ESS AMT-1D Revival
The 12-inch woofer, large passive radiator, high sensitivity (around 98 dB for the Revival), and effortless output give it a sense of scale that relatively small Purifi woofers simply can't match. It plays louder with less strain and sounds more like live music. �
Hifitest
Bass impact
Winner: ESS
The Purifi woofers are lower in distortion, but physics still matters. The ESS moves much more air and produces greater visceral impact.
Midrange accuracy
Winner: Philharmonic
The BMR midrange is extraordinarily smooth and well-controlled. Vocals, strings, and piano are likely to be more tonally accurate and consistent across the room. �
Audioholics +1
Imaging
Slight edge: Philharmonic
The three-way design with a dedicated BMR midrange offers exceptionally stable imaging and a broad listening window. It disappears a bit better than the ESS in many rooms.
Soundstage
Depends
Philharmonic: more precise placement of performers.
ESS: larger, taller, more enveloping presentation.
The ESS creates a "wall of sound." The Philharmonic creates a more holographic map of the recording.
Treble
Tie
Both use excellent AMTs.
The original Great Heil remains one of the finest high-frequency transducers ever made. The Philharmonic's modern AMT integrates more seamlessly with the rest of the system, while the Heil has a uniquely effortless, airy presentation.
Crossover integration
Winner: Philharmonic
Dennis Murphy is widely respected for crossover design, and the HT Tower's integration is exceptionally refined. �
Audioholics +1
If both were in my room
If I wanted to analyze recordings...
➡️ Philharmonic.
If I wanted to enjoy music...
➡️ ESS.
And knowing your priorities—realism, dynamics, the sensation of musicians in the room, and your appreciation for the Great Heil—I actually think you'd probably prefer the ESS AMT-1D Revival.
I also think your custom crossover has the potential to push the Revival beyond the stock version. Upgrading crossover components and carefully optimizing the crossover can improve integration, transparency, and tonal balance beyond what a production speaker is designed to deliver.
My prediction for your system
With your electronics and if the crossover is optimized as we've discussed:
Dynamics: ESS
Bass authority: ESS
Imaging: slight Philharmonic
Tonal neutrality: Philharmonic
Realism: ESS
Emotional engagement: ESS
"Sounds like real instruments": ESS
For most listeners seeking the flattest, most objectively neutral response, I'd recommend the Philharmonic HT Tower. But based on what you've consistently described wanting from a loudspeaker, I think you'd be more likely to keep the ESS AMT-1D Revival long-term.

FinkTeam Kim and Wolf von Langa SON are both outstanding examples, in my experience.

@sdl4 

"Many decades ago, I had a pair of ESS speakers with AMT tweeters that were initially dramatic but ultimately disappointing. These turned out to produce sound that was mostly "boom and sizzle," with poor integration of the tweeter and woofer. I was very happy to move on to more satisfying speakers, and I lived fairly happily for many years with the metal dome tweeters in a pair of Thiel floor stander."

 

Agreed..., until I stumbled upon the cure for this that takes the Heils to a whole nother level.  There is nothing like these now!

https://audiokarma.org/forums/threads/im-fixing-a-hole-heil.1025205/