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JMB

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About JMB

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    Member

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  • Location
    Germany
  • About
    Publisher, self-help books.
    Audiophile-nerd, interesting in quality of audio singnals and their influence on the human mind.
  • Interested in Sound for Picture
    No
  1. Hi Nick, hi Scott - being kind of flimsy was eventually the main target of the Stellavox recorders, kind of an "answer" to the more heavier Nagras III and 4.2. It's recording quality is supposed to be equal or even a little superior to a Nagra 4.2 S, according to an US-dealer, who sold & maintained both of them. It is a pleasure to let a Stellavox run, especially for recording your own voice, but this is more or less for hardcore enthusiasts, who know how much verve you need to get it all set up; then it get's "inspiring", kind of brightens up all you do, opens up the sky .
  2. Dela, this is a good idea. The capacitor is quite easy to access: you open the top screws, after you take off the top cover we have access to the capacitor. No need to touch the bottom screws! In my ATN it is a SIC-SAFCO RELSIC 1000 µF, seems to be 63 - 75 Volt Dimensions: diameter 27 mm x 43 mm long With such diameter we can get a new capacitor of up to 4.700 or even 6.800 µF. To my understanding 50 Volt would do it. I measured the voltage at the capacitor when ATN was on the mains (230 Volt here in Germany), it showed 22,23 Volt
  3. Philip, good idea to check this, with a Nagra III (No. B65, 6393), with original ATN (No. 8690): 5'' spools, with 900 ft tape, 270 meter: ATN: 2:52 = 172 seconds Cells: 3:09 = 189 seconds 7'' spools, with 1.800 ft tape, 540 meter: ATN: 8:30 = 510 seconds Cells: 10:08 = 608 seconds At the end of both tests with the 7'' spools you had to use your finger in order to get the rest of the tape on the other wheel. The cells have improved since the time you remember, I have a set of 10.000 mAh, though the voltage is about the same as with t
  4. I begin to wonder if I am presently the only one at jwsoundgroup running a Nagra III on cells and try to charge them with the original ATN & PAR. Anybody else? - I found two interesting manuals for the Nagra III in the net. https://museumofmagneticsoundrecording.org/images/R2R/NagraIIIManual.pdf http://lcweb2.loc.gov/master/mbrs/recording_preservation/manuals/Nagra III Instructions Manual.pdf Both give valuable information, as for instance about the power consumption of the Nagra III: Test mode: 85 mA Playback mode: 175
  5. Kudelski and his team didn't nourish their customers with loads of information of how to charge the batteries in the Nagra, at least very little information can be found in the manuals. I will soon get a manual for the Nagra IIII, maybe there is more. As for me I would like to get the picture, how things were properly handled at the time the units were sold, with cells at that time having some 2500 mAh, and then proceed from this to our time, when we have cells of up to 10.000 mAh available. Most today's owners / collectors of a Nagra will not care for such considerations, for
  6. Jeff, about sound for movies I can contribute some details: The series "Der Kommissar" with Eric Ode, were made using a Nagra for the sound: some years ago a Nagra 4.2 was offered, with a tape from the set still on the unit. Some weeks ago I got some tapes, being sold as "leader tapes", but turned out to be the master tapes for the series "Ein Fall für Zwei", with Klaus Theo Gärtner and Günter Strack in the beginning, 1981 ff. With the tapes were the orig. boxes, and a little dokument, stating date of recording, supervising engineer, samples taken for the film. To me
  7. Hi, let me join the discussion, which I find extremely helpful. I posted on a Nagra Serial no for 1960: B 60 426, but I have never seen it appear here. Today I would like to ask about how to charge a Nagra III. I can remember I found a quotation, saying the Nagras were made to be run by batteries, only this way they reach their full potential. To my understanding/ feeling, this is true. To run a Nagra III on batteries, this leaves out any hum you get from the psu, the sound is as good as it can be. But - how to charge the batteries properly?
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