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Old 5th July 2010, 02:20 AM   #1
cbj591 is offline cbj591  United States
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Default C3G/C3M Prices

Does anyone have an idea how much C3G/C3M NOS Siemens tubes are worth?

I saw some and the price look reasonable, so I was going to pick them up for a pre-amp.

Thanks

Brian
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Old 5th July 2010, 02:28 AM   #2
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15-30.00 is about what I have seen over the last couple of years. Apparently, very nice tubes.
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Old 5th July 2010, 07:19 AM   #3
Stixx is offline Stixx  Germany
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Prices have gone up considerably in the last years...
on german Ebay they can be found for about 17$...

http://http://cgi.ebay.de/C3g-Rohren...item563dadbe45
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Old 5th July 2010, 02:21 PM   #4
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C3g up to 30 eur, C3m up to 20 eur, great tubes!
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Old 5th July 2010, 08:20 PM   #5
Matt BH is offline Matt BH  United Kingdom
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If they are a good price grab em

They are possibly the best small signal tubes ever made. Have a look here:

C3g-C3m-info

Cheers Matt.
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Old 5th July 2010, 09:55 PM   #6
cbj591 is offline cbj591  United States
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I found a place to get the C3G for $13.50 usd and the C3M for $12.50 usd. They are coming from Germany

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Brian
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Old 6th July 2010, 07:28 AM   #7
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And what about C3o (6.3V version of C3m).
I have a bunch of them.
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Old 6th July 2010, 11:29 AM   #8
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just my .02c on the C3m -

I built a triode linestage around the C3m and it was one of the most microphonic tubes I have ever used. Almost up there with ancient 71A globe tubes! For example the bounce of my stepped Goldpoint volume control could be heard quite well through the speakers. There wasn't much difference between different brands of tubes - Telenfunken, Phillips, Valvo, Siemens, etc - though one suspects they were actually all made at the same plant.

Issue number two - the filaments are fragile when hot. I had two C3ms go bad on me from hotswitching or turning over the chassis after power down. Let the tubes cool before removing the tube or moving the unit.

The sound - with a 7119 White Cathode Follower - was very good though.
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Old 6th July 2010, 02:23 PM   #9
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Quote:
Originally Posted by kstagger View Post
just my .02c on the C3m -

I built a triode linestage around the C3m and it was one of the most microphonic tubes I have ever used. Almost up there with ancient 71A globe tubes! For example the bounce of my stepped Goldpoint volume control could be heard quite well through the speakers. There wasn't much difference between different brands of tubes - Telenfunken, Phillips, Valvo, Siemens, etc - though one suspects they were actually all made at the same plant.

Issue number two - the filaments are fragile when hot. I had two C3ms go bad on me from hotswitching or turning over the chassis after power down. Let the tubes cool before removing the tube or moving the unit.

The sound - with a 7119 White Cathode Follower - was very good though.
As seen here in the Ayon linestage, physical decoupling is mandatory when working with this tube.
(The "Stagger" linestage also has the tubes outside the chassis as far as I can remember.)

Click the image to open in full size.
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