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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
Thank you so much for the tip! I know this, though, and on my tape recorder these black dots are installed in exactly this position from the factory. Every time I use the tape recorde... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
26.09.2025, 22:22 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
I totally understand you and I wish you a lot of health and luck.
I can hardly imagine what appeared to the world Nagra III back in 1962, what a revolution it was. Even with those ... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
23.09.2025, 23:20 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
My Nagra III participated in digitizing of the tape archive that belonged to famous Soviet viola and viola d'amour player Vadim Vasiljevitch Borisovskiy. It was decided to release the... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
16.09.2025, 23:11 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
And here's more than that. I've tried to record a high quality music from High-Res digital to M5 at 15 ips on EMTEC PER 528. When played back on M5, it's OK. When played back on Nagra... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
13.08.2025, 22:57 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
Yesterday I've copied some old classical music soviet recordings from 1950's from MEZ-28A to Nagra III. MEZ is a soviet studio tube monophonic tape recorder with speeds 15 and 30 ips. T... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
07.08.2025, 23:48 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
Thank you so much for your message!
Now to your questions:
1. "A rewind belt can't produce fast forward". Yes, this is true. When the mechanics is working as it should, then, without ... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
22.07.2025, 01:02 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
Well, the technician has installed the belts yesterday. When working from the Nagra power supply, there's no rewind. When fully disengaging the pressure roller while in the play back mo... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
20.07.2025, 23:33 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Dear Manfred,
The pinch roller is already installed. Works great, but the recorder needs new belts, and they'll come the next week.
I understand you thought on Nagra III. One should not touch th... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
07.07.2025, 23:33 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Hello, Manfred,
I've forgot to tell you why am I going to reset the recording level for 528 tape. If I set the line input level to "0", set Nagra to recording mode with tape and engage 1 kHz test s... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
01.07.2025, 23:37 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Hello, Manfred,
Answering your questions:
1. The rubber pressure roller on Nagra need to be replaced because the original one become unusable: it creates a lot of wow.
2. I need a new clutch... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
28.06.2025, 11:57 |
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Thema: Nagra III - how to calibrate
Beitrag: RE: Nagra III - how to calibrate
| Hello, Manfred, by "calibration" I mean setting the recording level and bias that are correct for EMTEC PER 528 tape.
There is all-new pinch roller for Nagra III and there will be the belts for both ... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
25.06.2025, 22:41 |
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Thema: Nagra III - how to calibrate
Beitrag: Nagra III - how to calibrate
| Hello, it's me again. In addition to tube Telefunken M5, I have Nagra III BH (broadcast version with 3 heads with no pilot). Now it's being repaired, replacing the belts with the new ones.
The que... |
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Vladislav81 |
Diskussionen
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18 |
1927 |
24.06.2025, 23:05 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Manfred,
Yesterday I've put the M5 into the playback mode without the tape and without the pancake on the right side, and tried to hold the right reel holder by hand. I decided not to put off... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
30.01.2025, 22:33 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Manfred,
I'm terribly sorry for not answering our questions, but I've found the extraction of the essay dedicated to the repairing process of this very M5, written by the technician himself.
"... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
21.01.2025, 11:30 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Manfred,
Glad to see you again. Best wishes for the good health!
So, what am I to do next? Do I have to remove the brake band again? Next, do I have to put the pancake (wickelteller) onto ... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
16.01.2025, 00:50 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias and Manfred,
Maybe you're not interested in this theme anymore, but I've discovered for myself what would need 30 ips speed for today. This speed is necessary nowadays, on modern tapes, ... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
14.01.2025, 22:25 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias and Manfred,
Today I've decided finally put the brake band and the rest that goes with it back to it's place. As I'm not a technician, I've spent almost an hour to do that. The most di... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
28.12.2024, 22:28 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias and the others,
I've recorded today 3150 Hz on the very same tape.
https://disk.yandex.ru/d/EqtKvOzRInC3tg
In the beginning of this recording the right tension arm oscillated a lot. I ... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
23.12.2024, 22:14 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
I cannot understand why does the tape slip. It slips at 30 ips even more than at 15 ips.
By the way, at 30 ips the PER 528 tape doesn't have time to wind up to the right side, and... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
22.12.2024, 22:26 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
I'll check it today.
I just don't know how to use one channel for output to the M5 and the other channel for input back from M5. I use SSL 2 interface as an ADC.
I think I'll record a... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
14.12.2024, 22:57 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
With the headstack the tape slips.
Without the headstack the tape doesn't slip.
In either case the tape tensioner on the right side oscillates, only without the headstack it oscillate... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
07.12.2024, 22:24 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
The right tensioner still oscillates. Does that mean that the tape slightly slips? Or is it something else?
No, nobody in my neighborhood has tentelometer.
Best regards, Vladisl... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
06.12.2024, 23:17 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
Here are the videos of the M5's playing back without the headstack.
https://disk.yandex.ru/i/mDu6NBknODDNNg
https://disk.yandex.ru/i/u9K3zbax4S2Cyw
By the way, I think I've n... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
06.12.2024, 22:27 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
No, it's OK, I understand I shouldn't have done that.
So, as for now, I see that the bearings at the right side and in the winding motor are OK. The upper resistor makes no effect.... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
05.12.2024, 22:39 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Frank,
Today I've tried to adjust the upper resistor. No effect. The only effect was when I've tried to move the clamp almost all leftside: after about a minute of working I saw a white smoke a... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
02.12.2024, 23:07 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
If the wheel spins completely free, then what is the cause for a bad working of the right side of the M5? Could it be the pinch roller?
Regards, Vladislav |
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Vladislav81 |
Diskussionen
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111 |
16063 |
02.12.2024, 01:27 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
I want to say that I'll try to find a man who would produce these rollers from the start. I know a technician who could replace the rollers in the capstan gearbox.
To my mind, the ... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
30.11.2024, 22:28 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
There's almost no difference between the left and right sides, except an uneven rotation on the right side and the awful spring there.
Yes, I've cleaned the surface, but I wouldn't... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
28.11.2024, 23:03 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello Tobias,
Thank you so much, will look today and will make photos. I'm very suspicious of this crumpled spring at the top. It was put there by a so-called technician who was restoring a tape reco... |
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Vladislav81 |
Diskussionen
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111 |
16063 |
10.11.2024, 22:52 |
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Thema: Telefunken M5 tube
Beitrag: RE: Telefunken M5 tube
| Hello sensor,
It's true. Could you, please, be so kind to make a most detailed photo of how it should look in a well working M5?
Thank you
Kind regards
Vladislav |
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Vladislav81 |
Diskussionen
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111 |
16063 |
10.11.2024, 20:21 |
