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The Ultimate Dream Speaker

post #1 of 9
Thread Starter 
In this month's TAS CES is covered. One of the products that stuck out for me most was the Lansche Audio Corona zero mass plasma tweeter(pdf). I have found documentation on these devices that goes as far back as 1999, but I believe this is the first 'production' speaker with a form of plasma tweeter. I'm completely overwhelmed by such a breakthrough technology in this industry.

Additionally, I've been very intrigued by the Magico line of speakers. The Mini has gotten more than its fair share of debate, but TAS also makes mention of the Model 6 semi-flagship as the best sounding speaker CES had to offer. The insanity of the Ultimate and its use of drivers priced at 5 figures, the 650lbs per side Model 6 utilizing carbon sandwich cones and the upstart disruptiveness of the Mini have put Magico at the forefront of speaker development in my eyes. I would love for Alon Wolf to design the plasma tweeter into one of his cabinets.

The last component that seems a technological breakthrough in the world of sound reproduction is the Wilson-Bensche Torus infrasonic generator. I'm not sure of the likelihood of such a design, or bastardization thereof, being integrated into a speaker, but if possible I believe the use of such a woofer in coordination with the plasma tweeter in one of Alon's designs would create the ultimate in unconventional breakthrough speaker design. Now, if only we could get these three to work something out.
post #2 of 9
I don't believe this is actually a new idea:

http://www.roger-russell.com/ionovac/ionovac.htm

I had a plasma type tweeter here made by Magnat, a German brand. It needed new electrodes, as it was intermittent, but I did get to hear it and it did work well. I couldn't properly audition it though..

THe only reference pix I could find on the net in a quick search is in an expired fleaBay ad, # 260097301497
post #3 of 9
Agreed, Dukane is as old as the hills, and Hill Plasmatronics, from the seventies, is mentioned in that link as well. Acapella currently offers a plasma tweeter in some of its hybrids (with horns and dynamic speakers). Much of this isn't 'new tech' so much as 'old tech' using new materials, eg, better resonance control. Look at the trends toward horn-loaded speakers, SET amps, idler wheel turntables (or turntables at all). Here's a link to an owner of some vintage Siemens equipment- the shiny new horns are Avantgarde, the vintage stuff, well, it's pretty easy to discern. (Click on the link for systems, then go to Dr. Takeshi Mikami (second system):http://klangfilm.free.fr/index.php?l...tle=&dir=&num=
post #4 of 9
Thread Starter 
Interesting read. According to the article linked the tweeter built in the 1950's was unable to reproduce frequencies below ~5khz without significant distortion. A conventional McIntosh tweeter was far cleaner than the plasma tweeter. I imagine significant improvements have been in the last 50 years, but I wonder if they're still experiencing trouble creating the lowest frequencies the tweeter handles.

The marketing PDF for the Lansche notes the smoothness of the tweeter well beyond 30khz and makes many assertions to its lack of distortion at all frequencies. I'd like to see some modern tests of the Corona, but I'd also like to just listen to it.
post #5 of 9
Thread Starter 
whart, I don't think those speakers are big enough. Thanks for the link. Also, I didn't know Avantgarde made a shorty sub. I've only seen one about twice as tall.
post #6 of 9
The local speaker repair tech/guru once told me: You can't alter the laws of physics.

That makes so much sense. He ran through about 3 'new' speaker designs when we chatted about 10 years ago, including the 'new' tiny very high powered long throw subwoofers. (Bob Carver came out with one of the first 1 cu. ft subs). BY making the cabinet tiny, you lower the efficiency by a huge amount, therefore to compensate, you need gobs of power and a very long throw. He actually dissected one of the first Carver/Sunfire subs and pointed out with some glee that none of the specs were accurate.

The box was slightly smaller than 1 cu ft, the amp didn't quite put out 2000 watts, the throw wasn't quite 2.5" or whatever was quoted, etc.

Similarly, the Bose Wave radio uses folded horn technology that came out in the 40s (?). Bose certainly didn't invent it...
post #7 of 9
Thread Starter 
What's your opinion on the Torus? The push pull design is interesting in marketing, and Wilson-Bensche make a lot of assertions regarding their radical deviation from the conventional subwoofer and reductions in distortion. They don't mess around with small drivers either, so throw shouldn't be an issue for high dB LFE. I just wonder how low the low frequency goes. And how does it compare to the bass fan?
post #8 of 9
Quote:


The Ultimate Dream Speaker

I had one of these until I woke up
post #9 of 9
Thread Starter 
Quote:
Originally Posted by Alan Gouger View Post

I had one of these until I woke up

I worked on that title for a few minutes.
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