AH! GEC: Giant Electrical Confluences

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Posted by Bambi B (A) on July 22, 2009 at 17:16:56

In Reply to: gec 12ax7a tubes posted by pennyford on July 22, 2009 at 14:05:28:

pennyford,

I believe GEC is more or less General Electric Company, but has a link to Marconi Canada and Marconi-Osram. There are connections to Genelex as well- I think.

As far as I know, your GEC 12AX7s may be selected Mullards- or even General Electric of Canada, which may or may not also be Marconi, Canada or Marconi-Osram- just as for so many tube companies- complicated company connections. Are they marked for country of origin? Are there any etched codes?

GEC had a special designation for some 12AX7's which was B759- which are rare enough I've never seen one, but I think overall GEC are carefully selected tubes by other makers- they weren't manufacturers. If they have life left, they are likely to be quite high quality.

I have a Fisher 800C receiver that arrived with 8 -Telefunken ECC83's with Fisher markings and I believe that Fisher also relabeled Mullards for their receivers, the 800 at least. If you find tiny etched codes on the GEC's, I'd suspect Mullards.

Perhaps our friends formerly known as tubemonger- sorry I can't remember the new moniker- can correct this and fill in details?

Cheers,

Bambi B

This post is made possible by the generous support of people like you and our sponsors:

Follow Ups Full Thread

Topic - gec 12ax7a tubes - pennyford 14:05:28 07/22/09 (10)

Look japanese to me. Maybe Hitachi?? NT - bcguitar 13:02:22 07/28/09 (0)

RE: gec 12ax7a tubes - nsgarch 19:56:16 07/25/09 (0)

RE: gec 12ax7a tubes - pennyford 22:12:41 07/22/09 (0)

Possibly Japanese.... - CV4109 17:48:08 07/22/09 (0)

AH! GEC: Giant Electrical Confluences - Bambi B 07/22/0917:16:56 07/22/09 (4)

RE: AH! GEC: Giant Electrical Confluences - astralnavigator 18:27:01 07/22/09 (3)

I understood that GE bought the M.O. Valve Co. - nsgarch 12:56:28 07/26/09 (1)

RE: I understood that GE bought the M.O. Valve Co. - Al Noakes 05:03:23 07/28/09 (0)

RE: AH! GEC: Giant Electrical Confluences - Al Noakes 08:57:46 07/26/09 (0)

RE: gec 12ax7a tubes - astralnavigator 16:17:16 07/22/09 (0)

Follow Ups

AH! GEC: Giant Electrical Confluences - Bambi B 07/22/0917:16:56 07/22/09 (4)

RE: AH! GEC: Giant Electrical Confluences - astralnavigator 18:27:01 07/22/09 (3)

I understood that GE bought the M.O. Valve Co. - nsgarch 12:56:28 07/26/09 (1)

RE: I understood that GE bought the M.O. Valve Co. - Al Noakes 05:03:23 07/28/09 (0)

RE: AH! GEC: Giant Electrical Confluences - Al Noakes 08:57:46 07/26/09 (0)

Post a Message!