C3G/C3M Prices

cbj591 · 5th July 2010, 02:20 AM

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

dnewma04 · 5th July 2010, 02:28 AM

15-30.00 is about what I have seen over the last couple of years. Apparently, very nice tubes.

Stixx · 5th July 2010, 07:19 AM

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

radiostar · 5th July 2010, 02:21 PM

C3g up to 30 eur, C3m up to 20 eur, great tubes!

Matt.B.H. · 5th July 2010, 08:20 PM

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.

cbj591 · 5th July 2010, 09:55 PM

I found a place to get the C3G for $13.50 usd and the C3M for $12.50 usd. They are coming from Germany

Thanks
Brian

bequerel · 6th July 2010, 07:28 AM

And what about C3o (6.3V version of C3m).
I have a bunch of them.

kstagger · 6th July 2010, 11:29 AM

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.

bequerel · 6th July 2010, 02:23 PM

Quote:

Originally Posted by kstagger

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.)

5th July 2010, 02:20 AM	#1
cbj591 diyAudio Member Join Date: May 2010	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

5th July 2010, 02:21 PM	#4
radiostar diyAudio Member Join Date: Apr 2009	C3g up to 30 eur, C3m up to 20 eur, great tubes! __________________ tubes.rs facebook.com/tubes.rs

6th July 2010, 07:28 AM	#7
bequerel diyAudio Member Join Date: Sep 2003	And what about C3o (6.3V version of C3m). I have a bunch of them. __________________ Thanx!

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5th July 2010, 02:28 AM	#2
dnewma04 diyAudio Member Join Date: Mar 2005 Location: MI	15-30.00 is about what I have seen over the last couple of years. Apparently, very nice tubes.

5th July 2010, 07:19 AM	#3
Stixx diyAudio Member Join Date: Sep 2003 Location: Southern Germany	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

5th July 2010, 08:20 PM	#5
Matt.B.H. diyAudio Member Join Date: Jul 2009 Location: Cheltenham	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.

5th July 2010, 09:55 PM	#6
cbj591 diyAudio Member Join Date: May 2010	I found a place to get the C3G for $13.50 usd and the C3M for $12.50 usd. They are coming from Germany Thanks Brian

6th July 2010, 11:29 AM	#8
kstagger diyAudio Member Join Date: Dec 2003 Location: Grand Rapids	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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