Practical to use a 48V transformer to run a 24V Neve pre?

[777funk]

I have an old power amp with a dual 48VAC toroid transformer. Is there a practical way to get this to the 24VDC necessary for a preamp? I can think of only two ways (other than a second transformer which wouldn't be practical)
1. DC/DC converter
2. Voltage regulator with a serious heat sink.

Not sure if either is a good way to run is it?

 

[CJ]

you might try using the doorbell xmr from the other thread as a bucking transformer for a low heat solution,

 

[shabtek]

is it dual primary? if so and you are in 120V mains land you can wire the primaries in series 

 

[RuudNL]

If not, unwind a part of the secundary winding. I did it before, and it is not too difficult!

 

[777funk]

Great idea. Not that it's not worth spending $100 more on a chassis and xfmr but sometimes the shipping on mult orders can turn an economical project into not so much. Thanks for the ideas. I like the unwinding idea if the dual primary idea doesn't work and learned something new with bucking transformers.