Rebirth of Studer C37

Ki Choi

Member Sponsor
May 13, 2010
764
29
1,590
Seattle WA area
Hi All:

To the interests of those who have already been infected with the tape machine hoarding disease (with no cure but only periodic remedies...), here's the quick photo of the C37 that showed up at my house. I dressed it up with modern Studer NAB hubs and 12.5" blank reels:



It is a WIP machine with 5535 hours on its original runtime meter with no missing parts (actually with extra parts such as brand new origial Studer butterfly heads in the care package that came with it) but needing final feed and care to put it back to its original glory.

During a quick inspection, I found several roller bearings that needs replacing and the original headblock should be sent to JRF for cleaning and alignments at future date.

To answer Roger's question from the other thread regarding input power, the machine is an European version with 220VAC 50Hz. My solution is to use a PS Audio P300 power regenerator that will take 120VAC input and will output 220V 50hz. Only the P300s shipped to outside of US can output at 220VAC. Otherwise, I have a 1KVA step-up transformer that can take US version P300 with 120V 50Hz output and bring it up to 220V 50hz. It would have been ideal to have the US (or Taiwan/Korean) version C37, but I should be happy with what I have.

Thus, if our European WBF members can help me source a P300 from there, I would be much appreciated.
 

MylesBAstor

Well-Known Member
Apr 20, 2010
11,238
81
1,725
New York City
Hi All:

To the interests of those who have already been infected with the tape machine hoarding disease (with no cure but only periodic remedies...), here's the quick photo of the C37 that showed up at my house. I dressed it up with modern Studer NAB hubs and 12.5" blank reels:



It is a WIP machine with 5535 hours on its original runtime meter with no missing parts (actually with extra parts such as brand new origial Studer butterfly heads in the care package that came with it) but needing final feed and care to put it back to its original glory.

During a quick inspection, I found several roller bearings that needs replacing and the original headblock should be sent to JRF for cleaning and alignments at future date.

To answer Roger's question from the other thread regarding input power, the machine is an European version with 220VAC 50Hz. My solution is to use a PS Audio P300 power regenerator that will take 120VAC input and will output 220V 50hz. Only the P300s shipped to outside of US can output at 220VAC. Otherwise, I have a 1KVA step-up transformer that can take US version P300 with 120V 50Hz output and bring it up to 220V 50hz. It would have been ideal to have the US (or Taiwan/Korean) version C37, but I should be happy with what I have.

Thus, if our European WBF members can help me source a P300 from there, I would be much appreciated.

Who are you leaving the machines to in your will? Hopefully they won't be on ebay :)
 

Bruce B

WBF Founding Member, Pro Audio Production Member
Apr 25, 2010
7,007
515
1,740
Snohomish, WA
www.pugetsoundstudios.com
I love the two "eighth notes" on the button! What is the button to the right of stop?
 

jazdoc

Member Sponsor
Aug 7, 2010
3,328
737
1,700
Bellevue
here's the quick photo of the C37 that showed up at my house

So you were just sitting there minding your own business and a C37 knocked on the door looking for an adoption???
 

RogerD

VIP/Donor
May 23, 2010
3,734
319
565
BiggestLittleCity
Hi Ki,

Very clean example of Willy Studer's classic tube machine. Thanks for the explanation on the power. Is it true that the C37 has close to 50 tubes in the electronics?:)
 

Ki Choi

Member Sponsor
May 13, 2010
764
29
1,590
Seattle WA area
So you were just sitting there minding your own business and a C37 knocked on the door looking for an adoption???

It's something like that...I was thinking about the European debt crisis and Bieber fathering a child, etc. and then Boom! it happened. ;-)
 

RogerD

VIP/Donor
May 23, 2010
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BiggestLittleCity

MylesBAstor

Well-Known Member
Apr 20, 2010
11,238
81
1,725
New York City
Hey Myles,

Since you are always nice to me, I will pass your name to my son as one of the possible caretakers of the machines... ;-)

Just one will do :)
 

MylesBAstor

Well-Known Member
Apr 20, 2010
11,238
81
1,725
New York City

Ki Choi

Member Sponsor
May 13, 2010
764
29
1,590
Seattle WA area
Are they common tubes or do you have to hunt around for one or two--like the old Marantz 10B :(

There are few tubes that I am not familiar with yet - such as 85A2/CV449 voltage regulator (3 ea.) and E130L/7534 power tube (1 ea.) - but other signal tubes are 7803/6DJ8 (13 ea.) and 12AX7 (3 ea.). So actually removing two transistors in the power supplies, there are total 20 tubes. Still less than 50 ;-)
 

c1ferrari

Member Sponsor & WBF Founding Member
May 15, 2010
2,162
51
1,770
In a fleeting moment of ecstasy...

It's something like that...I was thinking about the European debt crisis and Bieber fathering a child, etc. and then Boom! it happened. ;-)

Ki begot a C37 ;)
The key -lol- is abstinence...haha :rolleyes:

Wonderful, Ki :cool:
 

MylesBAstor

Well-Known Member
Apr 20, 2010
11,238
81
1,725
New York City

MylesBAstor

Well-Known Member
Apr 20, 2010
11,238
81
1,725
New York City
There are few tubes that I am not familiar with yet - such as 85A2/CV449 voltage regulator (3 ea.) and E130L/7534 power tube (1 ea.) - but other signal tubes are 7803/6DJ8 (13 ea.) and 12AX7 (3 ea.). So actually removing two transistors in the power supplies, there are total 20 tubes. Still less than 50 ;-)

Sure you can get those esoteric ones from some European tube dealers on ebay if you can't find them here ;)
 

mep

Member Sponsor & WBF Founding Member
Apr 20, 2010
9,481
17
0
There are few tubes that I am not familiar with yet - such as 85A2/CV449 voltage regulator (3 ea.) and E130L/7534 power tube (1 ea.) - but other signal tubes are 7803/6DJ8 (13 ea.) and 12AX7 (3 ea.). So actually removing two transistors in the power supplies, there are total 20 tubes. Still less than 50 ;-)

Ki-I will check my stash of tubes this weekend and see if I have either the 85A2 or the 7534 tube. If I do, I will send them to you.

Mark
 

microstrip

VIP/Donor
May 30, 2010
20,807
4,702
2,790
Portugal
Ki,
If your Studer C37 ever misses Europe, I offer to host it for a long stay. And it will be in good company with my two A80s and a few Revox's ... As I still have a few Swiss franc coins and bank notes around since my last visit to Switzerland, it will feel at home! :)
Congratulations!

The 85A2/CV449 and the E130L/7534 are easy to get in Europe , e.g. at Billigton Export UK

http://www.tube-and-valve-electronics.co.uk/default.asp
 

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