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About tysontom

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  1. Roy, it is one of the early versions. But what about that transformer? It almost looks a little like a "special" AR-6. Well, you were the only one at this point to mention anything about it, but it was one of several AR-6s specially built by AR in Holland for the old Royal Opera House in Copenhagen. I think when they were building the new $500 million opera house or before, they took out all of the old stuff, but I'm not sure of the actual history. Klause was on hand to get many of the older ARs when they were removed several years back. Through a little woofer "horse trading" with Klause, I got one black AR-6 a few years ago, but I never looked inside of it until recently, and that's when I noticed the transformer. That is a line-matching (likely 70-volt) transformer, and I guess all of these AR-6s and the many AR-LSTs also had those transformers due to the big distances between speakers and power source. The original woofer was replaced with a newer ferrite version, which I re-foamed, but the tweeter and crossover are still original. In most installations such as this, the transformer is usually attached to the back of a speaker, but in this case it was integral with the crossover internally. AR installed the transformers, painted the oiled-walnut (probably before oiling) cabinet in flat black and sprayed the grill with black paint as well. Hope everyone is staying safe! --Tom Tyson
  2. Do you AR recognize this AR-6 and anything different about it? --Tom Tyson
  3. I've done just that with many drawings, but you may not realize the scope of the number of drawings that would have to be done this way. I've used my Canon 5D-MkIII to take pictures of several drawings with great results -- and this camera is very precise with high resolution -- but it is very cumbersome and time-consuming to mount a drawing on the wall or tape each drawing to a drafting table with the camera on a tripod above (which is the way I've done it most of the time). A large-format scanner is much faster will give much better results because there is little lens distortion or light variation, but even that is a real problem.
  4. dna, thanks for your inquiry. I am working on the book project, but it goes slowly considering many other responsibilities, so there is still a way to go on it. I was a bit premature in "presenting" the project so early; I should have waited a bit later, but I'll get there. The Administrator posted this "separate" topic before I was ready, so this is where we are at this point. As for printing, I prefer to have it printed by a publisher, but we'll have to wait to see how that works. One has to have an agent to get a publisher. As for the "AR Archives." There are around 15 5-drawer, legal-size, filing cabinets full of data, many millions of pieces of paper, I suspect, and this doesn't include everything that was originally in these files. There are also thousands of large blue-line drawings and prints that can not be easily scanned unless a large-page scanner is used. In addition, someone from International Jensen actually, unknowingly, "deep-sixed" hundreds of old files, I was told by Victor Campos, before the filing cabinets were sent out to Benicia, California in the early 1990s, several years before I acquired them. So, many early files are now gone. Even with that, I have not actually read every single item in every file in every cabinet, even after several years. It is nearly overwhelming. There is one important thing, however, and that is that I have preserved these files (they were going to be distributed elsewhere or discarded) and went to great expense to acquire them -- legally -- through Recoton at the time to prevent them from being lost, distributed elsewhere or destroyed, and I had them shipped back to me on the east coast. To answer your question, "would it be possible to post all of the appropriate archives in the AR Library here," I would love to, but the answer is a simple "no." There are several reasons: (1) the files would overwhelm any storage method, even if compressed; (2) there are many "personal," non-public files and memos heavily mixed in with general-information files; (3) I don't have the resources of a half-dozen workers organizing and scanning the zillions of files and (4) many files are still somewhat sensitive and involve financial information or personnel information, and should not be shared, even though they date back many years. In addition, there are many "workbooks" on the design of various products, and these include hundreds of anechoic-chamber measurements, arcane calculations and mathematics, physics and so forth that only a few people would understand. This is part of the method of designing a loudspeaker, and it is tedious, dull and difficult to follow in some circumstances unless you are a speaker engineer. Nevertheless, if I see things that will be pertinent to general information that is not in the Library, I will scan them and send on to the Library. The Library, as a part of this website, is really quite complete and comprehensive, and most of the information needed for hobbyist work can be found in those files. Stuff is added all the time, and will continue to be added over time, and when I do see things in the Archives that are pertinent, I will send that information forward. Thanks, --Tom
  5. Will 200044 mid ranges work in the ar 9  I just got a pair and that’s what’s in them they also have been re coned with original magnets but cloth surrounds on lower mids  sound great but was wondering the difference between 200028 midrange. Thanks Ken 

  6. The pictures are not clear, but I'm pretty confident that the cabinets are walnut. C 4747 were built mid-1960, I think.
  7. Extrapolating the dates of other LSTs; e.g., LST No. 00367 was built in August, 1972 and No. 00609 was built in December 1972, and AR was building around 60 per month during this period, on average. Therefore, I think 00775, an early style LST, was built in Cambridge around February 1973, just before AR moved from Cambridge to Norwood. The L-1672 is the tag publication number, I believe, but not the build number. --Tom Tyson
  8. Greetings, Adriano! I love your pictures of your family's AR-2s. They were almost perfectly placed on the shelf, and the sound would definitely have been very clean and smooth! An early picture of Ann-Margret Olsson adjacent to her left-channel AR-2ax speakers, somewhere out in Hollywood in the late 1970s. Ann-Margret and her husband Roger Smith were music-lovers, and Ann-Margret was an accomplished singer and dancer, not to mention expert in high-fidelity sound reproduction! This extraordinary actress could ride a motorcycle well, too! --Tom Tyson
  9. Hi Tom, thanks for your comment. As I would like to have you in Buenos Aires to hear more about these stories, as you can imagine they never arrived in Argentina, I appreciate sharing them with me.
    I tell you that the numbers are 31169/31170 and the year is 1958. The boxes are like new. Imagine if they were from the US embassy, and then had only one owner, they were very well taken care of.
    Unfortunately I sent the two woofer for repair, I prefer that they be measured with the same graduation. I send you warm greetings from Buenos Aires, and if you come one day, I would like to receive you. Hug.
    1. tysontom


      Hola, y muchas gracias por tu mensaje y palabras amables! ¡Disfruté mucho la historia de sus altavoces AR-2 y su gran herencia! ¡Muchas gracias! Saludos cordiales, y si algún día llego a ese hermoso país, te daré una "campana". --Tomás Tyson



    2. Nes



      you will be welcome

  10. Thanks for that update. I've been to that house and actually stayed over a weekend as a guest of the Villchur family some time ago. It is a great house up on a hill! Price came down a little, but it still did well! Beautiful land!
  11. Please try this link. The first one apparently developed an issue. https://www.indiegogo.com/projects/edgar-villchur-the-american-inventor?utm_medium=email&utm_source=lifecycle&fbclid=IwAR0dCjwtc216lHjol9gNnTE2PN0ow4Epa6whX3gQDfqjdKq_1-LQIZn-q2o#/
  12. Hello Friend of Acoustic Research: A documentary filmmaker from New York -- living in the same town as and acquainted with Edgar Villchur -- is making a documentary film on the life of Edgar Villchur. This film producer is Cambiz Khosravi, a well-known documentary producer, and he is well on the way with his project, "Edgar Villchur: The American Inventor." I've helped him quite a bit, and I think the documentary production will be very nice and a great tribute to Edgar Villchur and Acoustic Research. Mr. Khosravi does need any help he can get to cover the cost of the "production stage" of the film, and PBS -- the likely presenter -- will cover the remaining costs. Therefore, Khosravi has set up a funding site: "https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fcambiz.khosravi%2Fposts%2F10217946219041185&width=500" If you can help in any way, it would be fantastic! --Tom Tyson
  13. It is rare for the original AR-2 cloth surrounds go bad in most cases, and it is best not to replace with urethane-foam, as this was not original. Foam surround may possibly change the free-air resonance slightly as well. Test the woofer first for air leaks, and if the woofer isn't bad, don't modify it. Leave it alone, but be sure that the cabinet does not have air leaks (use a stethoscope and 30Hz to listen for air leaks). This speaker also has the WWII-surplus, mil-spec (Army-Navy) oil-filled capacitors and the high-quality A-B level control. Therefore, it is rare for the crossover to ever give trouble, and it's probably good for 100+ years of unchanged, reliable service. This old AR-2 was very early (what was the serial number?), and it is unusual with some excellent pedigree! The 2 was an exceptionally fine old speaker (designed by Edgar Villchur and partially executed by Henry Kloss before he departed AR in February 1957). The first AR-2 went out the door in March, 1957, and the little speaker was, at that time, literally unsurpassed in sonic accuracy by any other loudspeaker at any cost except for the mightier AR-1, quite an accomplishment. These are rare, perhaps as famous as the AR-2s that belonged to Richard Nixon in the White House (you may not like his politics, but at least he knew good sound), JFK, Buddy Holly, Miles Davis, Nelson Rockefeller or even Ann Margret Olsen! It had been rumored for many years that that Rockefeller -- a notorious philanderer -- died of a massive heart attack (rip) while listening with his AR-3s to the thunderous final movement of Saint-Saëns Organ Symphony No. 3, while in the arms of one of his lovers at his west 54th street town house (not his main residence). We will never know for sure, but Nelson loved his AR speakers (he had various pairs) as much as his extra-marital girlfriends. Nelson could afford anything, but he always chose AR speakers and beautiful women. As a side note, one of Nixon's AR-2a speakers developed a problem and had to be repaired. Because of the nature of this customer, a secret-service agent accompanied the speaker back to Cambridge and witnessed the repair before returning to Washington. By the way, the Ponderosa Pine cabinets on the utility cabinet were never finished, but rather left in unfinished condition. So, if you want them to be original, don't mess with the woofer unless is is bad and don't apply finish to the cabinet unless it is an opaque finish. After all, these were work horses. --Tom Tyson
  14. Bin, I think you have 100% authentic AR-3 loudspeakers, no question there. What I do see, however, is that someone has tampered with the labels on the back and altered the serial numbers. I know that those serial numbers are not authentic, mainly because of the supporting evidence we've reported. You've raised yet another question, why weren't these speakers signed-off? I've never seen a pair that got through final inspection without a signature; it was required of the quality-control employees to sign-off on everything that went through the plant, from the anechoic testing of each individual driver down to the final production-line inspection and testing. In the end, however, I suspect that the sellers had two AR-3s that were early models with authentic drivers in good condition. The original, true serial numbers might have been many units apart, for example, one might have been C 04690 and the other might have been C 07201, for example, but still the same driver configuration and style, and the sellers probably thought that they would not bring as much money if left that way. Also, the original labels on the back might have been damaged or worn off, etc., and the sellers simply put on "new" labels. There are some original AR speaker labels floating around that belonged to AR that had not been put on the back panel of the AR speakers itself. I know, because I have one or two that I got from Roy Allison years ago. The grills and original grill panels were obviously damaged or broken, along with the missing original brass logos, etc. So, therefore, the sellers decided that they could get more money for the speakers if they could make them look like "mint-condition," consecutive-number AR-3s and demand a higher price for them. This in no way detracts from the speakers and their original drivers! It is simply a reflection on the sellers who refurbished them. --Tom Tyson
  15. Why does it even matter?
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