Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Joel on August 04, 2017, 06:22:01 am

Title: GTC output transformer
Post by: Joel on August 04, 2017, 06:22:01 am

Anyone know anything about GTC output transformers?  I was going through one of my old parts boxes and discovered an output transformer marked with G.T.C 1194.  I've got a note with it saying it's a push pull 6V6 transformer.  I haven't tested it yet to figure it's specs, but I wanted to know if any you know anything about this brand/type?

Title: Re: GTC output transformer
Post by: PRR on August 04, 2017, 01:37:50 pm

Look similar to these?
http://audiokarma.org/forums/index.php?threads/anyone-recognize-these-monoblock-amps-ii.233280/ (http://audiokarma.org/forums/index.php?threads/anyone-recognize-these-monoblock-amps-ii.233280/)

Title: Re: GTC output transformer
Post by: Joel on August 05, 2017, 04:17:44 am

Yes, mine looks quite a lot like those ones. 

Title: Re: GTC output transformer
Post by: drgonzonm on August 05, 2017, 05:02:13 am

G.T.C = General Transformer Corporation;  Looking for old sales manuals to look up some info.

Title: Re: GTC output transformer
Post by: Joel on August 07, 2017, 02:38:34 am

Well I did some testing with my home made frequency generator and my o-scope.  It looks like its around a 5.8k CT primary into 8 ohms.  From it's physical size, comparing to the Hammond replacement output transformers, I think its around 20W.