DC3 and Heyboer Output trans.

[Teleman]

I have been thinking about trying an Output trans. upgrade.I have read a lot of good stuff about Heyboer.An AC30 trans. seems right,they make 2 versions-Original AC30 and Reissue AC30.I can't find any specs can antone make a recomendation?

 

[Monsta-Tone]

Heyboer makes some really incredible transformers.
I would email this guy: http://www.allenamps.com/parts.php#transformers
He is really cool and knows his transformers.

I've built several amps with Heyboer and they are some of my favorite transformers.

When I emailed him about my DC-3, he recommended this one: http://www.allenamps.com/images/to40mt.jpg
The T040MT. It provides 4 & 8 ohms to a pair of 6L6's or 4 EL84's or 6V6's.

Here is his email reply:

Either my TO40MT or my TO60 would work electrically but I don't know
about physically. They have 4 and 8 ohm taps. I would treat the plate
impedance for 4 EL84s about the same as 4 6V6s and about the same as 2
6L6s or around 3.5K to 4K ohms.

David