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In Reply to: RE: What is this about? posted by PAR on December 11, 2016 at 15:59:22
If that is possible for you without rude smartassery.
Follow Ups:
I am not the only reader of this thread to have believed that your original posting referred to a review of the louspeaker that you pictured.
The Stereophile review was actually of the speaker that I picture here which is from Auditorium 23. Use of the model's name in the subject line or anywhere in the posting so as to relate it to an actual Stereophile review and follow up would have assisted.
May I also suggest that acronyms are best used when likely to be familiar to most readers. "LM" means Line Magnetic I discover. I think that less confusion would have resulted from use of the full name of this (generally) not particularly well known Chinese brand when referring, for example, to the compression unit for this loudspeaker's treble. Otherwise readers may go off (as I did) on a wild goose chase looking for details of a brand actually called LM.
WOW! If you thought Kloss' picture of an Altec horn speaker with what I believe is the Fostex T900a "super-tweeter" added in, was the Auditorium 23 speaker reviewed in Stereophile. Then you and all the others who believed that should become A LOT more familiar with the history of some of best known (Altec-Lansing) horn speakers ever used in audio. This post, IMHO embarrassed your lack of audio knowledge, not Kloss. The worst part is I would have considered this knowledge to be something ANYONE who knew ANYTHING, at all, about horn speakers would have readily known...
Thetubeguy1954 (Tom Scata)
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns --- High Sensitivity Speakers
I think that if you read my posts you will see that I didn't confuse the Altec design with the auditorium speaker. That's why I posted a picture of the Auditorium speaker.
I do, however, express puzzlement of The OP's use of the picture of the Altec as it has no relevance to the subject under discussion and to that extent was misleading.
BTW, I have quite a reasonable knowledge of the history of horn louspeakers having built, when younger, Voice of the Theatre types ( albeit using Vitavox mid horns) and designs with Electrovoice drivers. I have also comparatively recently heard and been impressed by Westrex cinema designs from 1926 demonstrated by Silbatone as per my picture.
That speaker in the Silbatone exhibit is a second generation WE system called the Mirrophonic Model 2 from 1934. This one is based on the 594A driver rather than the earlier 555 driver which the A23 speaker uses in replica form.Mirrophonic systems are the direct ancestor of Altec VOT systems. Horn or "lens" front-loaded, open baffle 18" field coil woofers, multicellular horns, with 300hz crossovers typical.
In general, the earlier WE 555 driver was used in wide range horns from 80-6kc without any crossover. Such horns include the 12A/13A, 16A, and the iconic 15A, none of which are tiny.
The A23 implementation is an attempt to fashion a domestically acceptable package based on the copy 555 driver and, as such, foregoes the wide response capability of the driver to meet packaging requirements.
YouTube vids exist of each of the above-mentioned wide-range horns demonstrated at the Munich show as an ongoing educational outreach program of Silbatone. We take an ancient WE system every year as a reality check on the latest high-end efforts.
Keith Aschenbrenner of Auditorium 23 is a perennial visitor to our WE demos. He is a very knowledgeable guy and well-known super maniac, so the reviewed speaker comes from somebody who knows and understands the historical territory quite well.
I do not get the impression that JA or Art are WE specialists, but they are doing a lot better than the TAS writer who reported on our CES exhibit as a "Westinghouse" horn speaker then went on to write the chapter in the TAS speaker book about Western Electric...or so I am told, having never actually seen the volume in question. I am afraid to look!
I can't speak to the relative quality of the Line Magnetic reproductions or the A23 implementations, but the WE original theater systems and especially that Mirrophonic M2 system are among the very best speakers I ever heard.
This is a totally different class of gear from high end consumer stuff. Engineered and built to an exceedingly high standard that stands today, despite the fact that these artifacts date from the stone age of electrical reproduction. The 555 driver is 90 year old technology!
Sadly, the Mirrophonic M2 is for a 3000 seat theater and will not fit through the door in most homes, including mine...but when properly set up, it is the best loudspeaker system I know.
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Free your mind and your ass will follow -- Parliament/Funkadelic
Edits: 12/17/16
Sorry thought most who read stereophile and reply to comments about steophile would understand that they just reviewed the LM loudspeaker. And I only see you have problems with that so I end with happy listening
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