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johnfalc

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About johnfalc

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  • Birthday 03/25/1946

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    Male
  • Location
    El Cerrito, California USA
  • Interests
    Music, Audio, Vintage motorcycles, Photography, Computing technology

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  1. Sorry to hear of your illness and, BTW ... lovely examples of one of my favorite speakers. John
  2. johnfalc

    Ar10pi

    Very nice ... I always liked those best of the bookshelf models. I still have the metal stands for them.
  3. Giorgio - Thanks but those have a DCR too high for application in the 90s or 9s. John
  4. I truly am loving them Michael ... enjoying browsing my collection of all genres. Thanks again, John
  5. Ra.ra: Thanks, but the 8" you describe are of too high a DCR for this purpose; nice drivers though. Stimpy: Thanks for the info you provided. For the time being the AR-90s (infrequently used) host the 1210045-0. Thankfully, I have the right drivers (stolen from my AR-90s) in the AR-9s and they're sounding great. I haven't really had a chance to spend quality time with them since I left the stereo/audio industry some 31 years ago. I'm really enjoying them, regardless of the source: CD, LP, FM, music server, or streaming. The cabinets, after a bit of lemon oil, look almost as though they just emerged for the first time from the shipping cartons, I really appreciate the care the one other owner and his wife took of these. The serial numbers differ only by 3. I believe they will outlive me, and become multi-generational in our family. They do play louder than the AR-3as they will displace in my living room, and they like power, but I have enough of that with the Carver M1.5t. I have three M1.5t (I buy these when I see broken ones at bargain prices - fun to fix although awkwardly compact). Back to listening!
  6. I recently bought a beautiful set of AR-9s (you may have seen the post from "Goose" last week about their availability - this post was moved to the "For Sale" section). Goose (Michael) was the original owner of these (bought them as a Teledyne employee) and he mentioned to me that, about ten years ago, he'd had the woofers and lower midrange worked on (he thought just new surrounds). All the drivers work properly but I was suspicious that the LMR had been changed given the different cone material from the proper LMR set in my AR-90s. The new AR-9s sounded impressive but with a bit more "wooly" feeling in the lower range of vocals than I expected. I measured the output of all drivers with the XO set to 0 by all three switches and took measurements of pink noise with a calibrated mic just 1" ahead of each driver just for reference. The tweeter and UMR were both about 3-5 dB lower in output than the suspect LMRs when looking at an FFT display in each drivers covered range. So ... I pulled the proper drivers from my AR-90s and installed them in the AR-9s (and while doing so found that whoever had worked on the AR-9s had failed to install gaskets for the LMRs). The result: Taking the same measurements as characterized in the preceding paragraph, all drivers are now within very close to the same output levels in their respective ranges and the speakers sound noticeably clearer, especially on vocals with content in the lower range, like Odetta, or even Bob Seger, or Kate Wolf. So ... I'm in the market for a pair of 8" LMR to restore my AR-90s to "stock" but am also interested in first-hand experience using other 8" AR drivers as substitutes, especially ones that have the original formed-paper cones rather than the plastic (polyethylene?) cones on the 1210045-08 (maybe 0B - hard to see) that my new-to-me AR-9s came with. Thanks, John (who is still convinced he got a fair deal on some beautiful speakers he's wanted for a long time).
  7. I bought these today from Goose (Michael), the original owner. It turns out he was a Teledyne engineer and bought these for 50% off as an employee in 1980. They are really quite lovely. I haven't hooked them up yet but don't anticipate much will be involved in taking them to like-new condition. He even had the original sales and owner's literature in its original envelope. Michael and his wife loved these speakers and seemed genuinely pleased that they're going to an AR enthusiast who will love them, and not molest and flip them. I really need to (eventually) make some decisions about what to keep. I now have AR-9, AR-90, AR-92, AR-2ax and 2 pair of AR-3a at home and a pair of AR-4x with my son in Philadelphia. I'm feeling very happy today, and thankful for the friend who drove with me to make the pickup - BTW as a point of possible interest, these fit perfectly in the bed of my Honda Ridgeline, almost as though they were meant for one another. John
  8. Hoping they're still available ... would be a nice step up from my AR-90s and a fun project to boot.
  9. I run my AR3as and AR90s (separate rooms) each with their own Carver M-1.5t amps (and I keep a spare, just in case). These work wonderfully. The only limitation I would point out to potential users is that your home wiring must be up to snuff in terms of its current delivery capability, this because of the nature of the power supplies in the Carver amps. I bought the amps "as is" and "for parts" and enjoyed fixing them (50 years ago such work paid my way through UC Berkeley). They're totally reliable, take up little space, by design the keep the output devices within their safe operating areas, and sound great. Power (given the caveat mentioned above about house wiring) is NOT a problem! Here's a product sheet from back in the day: https://us.v-cdn.net/5021930/uploads/editor/ka/pme5br8zsaqj.pdf Cheers, John
  10. As a kid I travelled by myself every summer from San Francisco to New York City en route to summers in New Hampshire and Vermont. My first trip was in 1954 (I was then eight years old) and my last trip like this was 1963. Usually I flew but sometimes I took the train across the country; either way, I would stay from a few days to a week in NYC and travel by the New York Central from Grand Central up to Albany, NY. My dad was very much into music and he and I built an HH Scott LK-48 to drive his KLH 6 speakers so I was "primed" to go looking for the AR Music Room as soon as it opened. It became a regular stopping place for me as I'd wait for my train up the Hudson. Fun memories ... thanks for the info and photos.
  11. I got my first pair of AR3a in the early 1970's, following KLH 17, 6, 5, and 12. Today I have one pair of 3a in the living room, another pair in storage. Additionally, I have AR90s in the master bedroom, 2ax in a guest bedroom, plus 92s in storage (mainly as parts backups for the AR90s). All the ARs have been recapped and, as necessary, fitted with new surrounds. The 3as sport AR replacement tweeters intended for AR11s with minor crossover modification to suit. My AR90s and AR3as are both powered by Carver M1.5t power amplifiers (I shop for broken ones and fix and test them, always keeping a spare). The only speakers I still consider adding are some Quad electrostatic speakers as, to me, their "sweet spot" listening can't be beat. They are tough to accommodate in my mid-century-modern home/furnishing arrangement so they may never join us here.
  12. Hi Pete, No, I haven't, but I will take a look. Thanks, John
  13. I was describing how crossovers work, in a general way, to a friend and decided a graphic portrayal would work best. I use LTSpice when I'm doing simple amplifier circuits and the like but I found an online tool which impresses me with its Java/JavaScript quality and suitability to the task of explaining multi-way speakers. The application site (a beauty of this is that it is a site, not an application you need to install on your PC or Mac) is http://www.falstad.com/circuit/circuitjs.html . If you click on this it will take you to the site with a simple RLC circuit already loaded. To take a look at the AR-90 crossover, you just need to load the parameters from a text file which I've attached. Here's the drill: * Once on the www.falstad.com site, click on <File>, then select <Import from Text...> to open a small dialog into which you'll paste the text file's contents. * Open the attached "4 Way Circuit - AR 90.txt" file using something like Notepad (the Windows app). Select the entirety of the file by using <Ctrl><A> and <Ctrl><C>, then paste the contents into the small dialog box opened in the first step above. Click <OK> and the model of the AR-90 crossover will appear. * Click the button labeled "Run / STOP" to see the frequency run from 20Hz to 20KHz while the simulation shows both the activity in the circuit and the resulting voltage delivered to each of the drivers (or in the case of the woofers, the pair of drivers). Note that I simplified things by only plugging 4 ohm resistors in rather than making any attempt to model the drivers ... remember this was just a simple teaching exercise. You may toggle the switches to see their effect on the voltages presented to the driver's surrogate resistors. Here's a picture of what you should see if you follow the directions above. Editing the circuit is very easy so, if this intrigues you, you may choose to model other crossovers by altering the topology/components. Thanks to RLowe for his contribution of the AR-90 crossover layout from which it was much easier to read component values than the other documents in the library. John 4 Way Circuit - AR 90.txt
  14. The AR S-1 also fit the 3a very nicely. Since years ago I mounted my main set of 3a's on the wall, I haven't used the stands (I bought them new when I worked for Pacific Stereo, probably 40 years ago or so). I don't want to deal with shipping them but if there's someone in the SF Bay Area (Northern California) who'd like to make me an good offer for local pickup, please do. If this post is out of order, sorry ... please delete - I do value this site highly.
  15. First pair of 3a's in the very early 1970's. Have always had multiple pairs since then.
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