Epiphone EA-50T Interstage Transformer

[Ted]

I have here an Epiphone EA-50T whose interstage coupling transformer has an open circuit primary.

The schematic gives a part number TF-1001D.

Anyone got any idea of the ratio of this transformer?

[Jazz P Bass]

1:1?
Interstage transformers ( IT )
valve/tube amplifier transformers
BLACK ART AUDIO

[Ted]

I got a Danbury universal Interstage Transformer and tried various windings.

http://livinginthepast-audioweb.co.u...99-leaflet.pdf

It sounded best on 1:1.5

[Steve Conner]

Thanks Ted, another handy part that I never knew about.

[kleuck]

Thanks too, theses Xformers are not easy to find nowadays.

[Enzo]

Allied 70009053
Allied - 6W68HF - Power Products - Transformers - Allied Electronics

Allied 70180870
Hammond Manufacturing - 107T - Power Products - Transformers - Allied Electronics

Allied 70218235 (70218236 - same but 15k ohms)
Triad Magnetics - TY-141P - Power Products - Transformers - Allied Electronics

Allied 70218230
Triad Magnetics - SP-66 - Power Products - Transformers - Allied Electronics

There are other impedance options in each of those transformer series if you don;t want 10k:10k. The Allied book was handy at the moment, and I have purchased these exact things from them in the past. I'd imagine they are also available at othe major suppliers like Mouser under the manufacturer model numbers.