Gotham Audio Studer C37 60HZ 1960’s

[andromedaaudio]

Do you have any idea how much C37 s are still running all over the world , not only the gotham machines .
Sounds like a shit importer after reading the story .
I cant understand why some business people act like this , i ve seen some audio importers act the same overhere .
Some act like they own the brand , instead of being just thankfull to be able to distribute it and deliver good service for the people who are actually making/ designing the machines.

 

[sigitask]

I will listen later at the office to the noise , if you can hear a defect bearing you almost certain also have play somewhere does it turn nicely without play anywhere?.
Are the motor bearings 2 radial bearings or is there also a cup and and cone bearing which can take axial loads in the design which needs preload /and washers?
If to many washers are placed the bearing shaft doesnt turn nicely anymore..

Abec ..... is simply the american quality standard .
It doesnt make SKF or NTN bearings of less quality , those companies european /japanese only use a different standard to grade their bearings.

In my view SKF/ NTN is very good .
If you have a abec standard bearing im sure SKF can give you the correct equivalent of that .
You just need to take the housing / shaft dimensions into account off course

Motor by turning by hand has zero noise, and turning is very smooth. This noise starts when i connect to the power.

 

[sigitask]

Do you have any idea how much C37 s are still running all over the world , not only the gotham machines .
Sounds like a shit importer after reading the story .
I cant understand why some business people act like this , i ve seen some audio importers act the same overhere .
Some act like they own the brand , instead of being just thankfull to be able to distribute it and deliver good service for the people who are actually making/ designing the machines.

Do you know somebody who can make service in Europe for this motor?

 

[dcc]

Audio House

 

[andromedaaudio]

Audio House

Sounds like everybody recommends audio house .
Besides that you can ask eternal arts in hannover .
Explain the problem etc.

Brg hj

 

[dcc]

I don‘t need to go to that far. I have an excellent tech nearby my place who is specialised in tape decks. He works with Audio House. My A80 got fully refurbished with parts from Audio House and some bespoke upgrades developed by my tech.

 

[sigitask]

Capstan motor B 62 .

2 different designs for a B62 machine taken from my original B62 manual .
Not sure which is in mine
One is a ballbearing design , the other is kamm lager (german ).
.cam bearing

I disassebled motor. Sintered bearings is perfect, runing smooth and noiseless. I oiled with Mobile DTE light oil, as recommended. Noise is little bit less. But on lower speed still big nise and vibration.

 

[sigitask]

I disassebled motor. Sintered bearings is perfect, runing smooth and noiseless. I oiled with Mobile DTE light oil, as recommended. Noise is little bit less. But on lower speed still big nise and vibration.
View attachment 68534

 

[andromedaaudio]

I m just a mechanical guy.
May be something is wrong with the copperwindings .
And they need to be measured .
Better to ship as recommended .
Online problem solving only goes so far .

My B 62 VU had a cap blown .
And needs a repair
Luckily i have 2 machines more .

Brg hj

 

[sigitask]

I m just a mechanical guy.
May be something is wrong with the copperwindings .
And they need to be measured .
Better to ship as recommended .
Online problem solving only goes so far .

My B 62 VU had a cap blown .
And needs a repair
Luckily i have 2 machines more .

Brg hj

Windings is ok. I checked resistance. Good idea have to measure inductance!

 

[sigitask]

Windings is ok. I checked resistance. Good idea have to measure inductance!

Just thinking maybe some winding is shorting. Can not detect with resistance measurement. But with inductance measurement probably can.

 

[sigitask]

The "GOTHAM C37" is finally nearing a complete restoration .Should be a week or two away.You can see from the original pictures it was in need of paint and a good cleaning . I decided to restore the deck mechanically with new running parts ect, with recapped audio , power supply, rectifier, solenoids & tubes . Everything was cleaned along switches rebuilt new bearings for motors cleaned. Correct 5&7 class bearing in the running gear.New Brake assemblies including linings.Studer A80 Dark grey was used to paint the turntable platters.I am very happy now all we need is to get this home from New York City.

I was looking for information on the USA Voltage models and started this thread on the Steve Hoffman forum. I received some interesting feedback:

"Interested in finding those that know about or have knowledge of the USA version."

"Also, do remember the early Studer machines were very uncommon in the USA to begin with. Gotham Audio did import them. Just didn't sell a lot of them. The Studer B 67 was really the first Studer model to catch on in the USA. The C37 and J37 were much more common machines in Europe (they were Europe's equivalent to the Ampex 300 and 350 machines as a standard)."


"Ah, Steven Temmer. It's mute testimony to just how good the German stuff he DID sell was, since he was such a no-goodnik no one wanted to buy anything from him if they didn't HAVE to. The Studers were well made, but more expensive than Ampexes, and those were more than expensive enough."

"Indeed, Steven Temmer. A man who had a reputation of being abrasive at times."


"No, he had a reputation for being constantly abusive, combatative and out to gouge every customer as much as possible as often as possible. He signed exclusive deals with German (primarily) firms to represent them in the US and the Germans soon wanted out, but lacked the desire for what Temmer convinced them would be a long and expensive US court battle to get out of it.Several smaller US facilities wound up putting a gofer on a jet to Germany to get around Temmer."

"Steve Temmer was the US Studer importer when the J37/C37 were new machines. Nobody else could legitimately import Studer then. And Mr. Temmer was really notorious for not supporting grey market equipment. If you wanted then to buy a new J37/C37 in the USA, you had to buy it from Gotham Audio. What Burt has to say on this is extremely true. And in the day, it was cheaper to buy an Ampex 300 or 350 new then. The only major audio manufacturer I know of who ever escaped Steve Temmer's clutches for USA representation was Studer (who eventually opened their own USA branch). This attitude out of Steve Temmer and Gotham Audio is why it is so difficult to find a USA voltage Studer C or J 37 tape machine."

"Stephen Temmer and Franz Ammann, his export distributor, opened a Gotham office in Regensdorf, Switzerland near Studer’s facilities."

View attachment 43739 View attachment 43740 View attachment 43741 View attachment 43747

I like to ask what paint you was using for C37 new painting?

 

[Wwhoodoo]

My C37 is a rare bird of sorts as I have said before I think Gotham Imported only 6 U.S models. But it still has the early 1962 electronics record preamp is a C-37-C and uses mustard caps and Beyer transformers. Mine was converted by RCA for 2 EQ's NAB and CCIR.
I would defineatly send the motors off to AudioHouse. If you're in Europe it is a no brainer. Good luck.

I have been trying to find the schematics for these early 1962 record and repro amps that were imported to the US. My machine is from this batch and is NAB only. I have made “as built” drawings but the modules aren’t consistent with each other, and I would love to see a factory drawing, if one exists.

 

[DavidH]

Some photos of the playback preamps View attachment 44927

Dear RogerD,
Thank you so much for posting these.
I must say I'm a bit puzzled since these are the early Studer Playback amps that were not initially CCIR/NAB switchable (there are only 2 sets of EQ's on them, while there were 4 on later CCIR/NAB versions of the same playback amp).
How do you do CCIR and NAB and where were the 4 relays housed? I can't see them on your picture and, having exactly the same amps, I'm desperately looking for a way to do a CCIR/NAB switch.
Thank you for your kind help,
David

 

[sigitask]

The "GOTHAM C37" is finally nearing a complete restoration .Should be a week or two away.You can see from the original pictures it was in need of paint and a good cleaning . I decided to restore the deck mechanically with new running parts ect, with recapped audio , power supply, rectifier, solenoids & tubes . Everything was cleaned along switches rebuilt new bearings for motors cleaned. Correct 5&7 class bearing in the running gear.New Brake assemblies including linings.Studer A80 Dark grey was used to paint the turntable platters.I am very happy now all we need is to get this home from New York City.

I was looking for information on the USA Voltage models and started this thread on the Steve Hoffman forum. I received some interesting feedback:

"Interested in finding those that know about or have knowledge of the USA version."

"Also, do remember the early Studer machines were very uncommon in the USA to begin with. Gotham Audio did import them. Just didn't sell a lot of them. The Studer B 67 was really the first Studer model to catch on in the USA. The C37 and J37 were much more common machines in Europe (they were Europe's equivalent to the Ampex 300 and 350 machines as a standard)."


"Ah, Steven Temmer. It's mute testimony to just how good the German stuff he DID sell was, since he was such a no-goodnik no one wanted to buy anything from him if they didn't HAVE to. The Studers were well made, but more expensive than Ampexes, and those were more than expensive enough."

"Indeed, Steven Temmer. A man who had a reputation of being abrasive at times."


"No, he had a reputation for being constantly abusive, combatative and out to gouge every customer as much as possible as often as possible. He signed exclusive deals with German (primarily) firms to represent them in the US and the Germans soon wanted out, but lacked the desire for what Temmer convinced them would be a long and expensive US court battle to get out of it.Several smaller US facilities wound up putting a gofer on a jet to Germany to get around Temmer."

"Steve Temmer was the US Studer importer when the J37/C37 were new machines. Nobody else could legitimately import Studer then. And Mr. Temmer was really notorious for not supporting grey market equipment. If you wanted then to buy a new J37/C37 in the USA, you had to buy it from Gotham Audio. What Burt has to say on this is extremely true. And in the day, it was cheaper to buy an Ampex 300 or 350 new then. The only major audio manufacturer I know of who ever escaped Steve Temmer's clutches for USA representation was Studer (who eventually opened their own USA branch). This attitude out of Steve Temmer and Gotham Audio is why it is so difficult to find a USA voltage Studer C or J 37 tape machine."

"Stephen Temmer and Franz Ammann, his export distributor, opened a Gotham office in Regensdorf, Switzerland near Studer’s facilities."

View attachment 43739 View attachment 43740 View attachment 43741 View attachment 43747

You made grate job! Fascinating! May I ask source for new Brake assemblies with linen ?