Bottlehead Forum

General Category => General Discussion => Topic started by: seattlemagpies on March 22, 2022, 05:58:40 PM

Title: McAlister Audio MD-75 - transformer needed
Post by: seattlemagpies on March 22, 2022, 05:58:40 PM

I'm restoring a pair of these monoblocs and the first one came up nicely, but there appears to be a short in the transformer of the other one.  Does anyone know someone who will re-wind a transformer on the original frame?  Or perhaps put together a custom transformer that's affordable?

Transformer has three windings, so off-the-shelf not realistic.

375-380v
6.5v
4.85v

Any help appreciated.

Title: Re: McAlister Audio MD-75 - transformer needed
Post by: Paul Birkeland on March 22, 2022, 07:37:12 PM

Heyboer tends to do that kind of work, but it will be a bit of a wait! If you provide them the dimensions and application, they can likely make you a copy, but they will not take apart what you have now and redo it.

Title: Re: McAlister Audio MD-75 - transformer needed
Post by: seattlemagpies on April 12, 2022, 09:28:19 AM

with much calling around, i found an outfit in ca called cal coil technologies that will rewind old transformers.  It's slightly more expensive thay Hayboer, but should match better.  Thought people here would like to know