Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Rickinbeachcrest on September 01, 2021, 05:57:15 pm

Title: Need a power transformer for a Champ
Post by: Rickinbeachcrest on September 01, 2021, 05:57:15 pm

I'm in the process of gathering parts for the build of a Hoffman Champ.  I see that Doug recommends the Mojo 759 with a high voltage of 290 for the power trans.  Mojo is out of stock on these trans, so I've been looking else where.

The closest I have found is 325 v.

https://shop.amppartsdirect.com/collections/transformers/products/fender-champ-style-power-transformer-apd-8019h-by-heyboer

Would this trans from Amp Parts Direct work?

Thanks.
Rick

Title: Re: Need a power transformer for a Champ
Post by: sluckey on September 01, 2021, 06:15:08 pm

Hammond 290AX would be my choice. Available from AES...

     https://www.tubesandmore.com/products/transformer-hammond-guitar-amplifier-replacement-fender-120-v

Title: Re: Need a power transformer for a Champ
Post by: jordan86 on September 01, 2021, 07:18:35 pm

Quote from: sluckey on September 01, 2021, 06:15:08 pm

Hammond 290AX would be my choice.

^^^What Sluckey said! ^^^

I just built a Princeton with a 290ax, last year. They can possibly be found for less at Hawk Electronics. 290ax has two HT options as well, high and low voltage 

Title: Re: Need a power transformer for a Champ
Post by: Rickinbeachcrest on September 01, 2021, 09:26:25 pm

Thanks for the quick reply.  Sounds like the way to go.
Rick