Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: wsscott on February 27, 2025, 02:02:51 pm

Title: Triwec Output Transformer info needed
Post by: wsscott on February 27, 2025, 02:02:51 pm

I'm trying to find info on a Triwec Model E6113 Output Transformer that is from a Gretsch/Valco 6160 amp.  The one I'm dealing with has the code 5246326.  524 is Triwec's ID code and it was made in the 26th week of 1963.  Any info on the wiring, schematic of it etc. would be a great help.

Title: Re: Triwec Output Transformer info needed
Post by: shooter on February 27, 2025, 02:34:39 pm

no clue
the schematic here
https://el34world.com/charts/Schematics/files/Valco/Valco_gretsch_6160.pdf
shows 3 wire pri, 2 wire speaker,   not much rocket science there

Title: Re: Triwec Output Transformer info needed
Post by: HotBluePlates on February 27, 2025, 05:03:03 pm

Cathode-biased 7027 could be treated about like cathode-biased 6L6GC.

Unless you're getting paid to make an exact clone, anything from 4-6.6kΩ is likely close enough to deliver same-results.

Title: Re: Triwec Output Transformer info needed
Post by: wsscott on February 28, 2025, 08:09:51 am

Thanks guys.  Helpful.