Looking for Power Transformer

[Kossandr]

Anyone by chance have an old 28-2350, or 28-2351 power transformer they'd be willing to part ways with? I need to replace a fried one in one of my Sun Solos.

[_peter]

Hi,

how about a 28-2360?

Best,
Peter

[Kossandr]

I sure wish I could find some good documentation in these old parts

The best I can tell from what I can find on the internet, the 28-2360 is a 60 watt power transformer. I can't find a good schematic the lists all the voltage outputs of it either. I know from testing a functional 28-2351 that it runs:


Blue: 260 vac
Red: 68 vac
Green: 6 vac (tube heaters)
Black: 120vac (input)

And from what I can tell the amp I'm trying to replace the PT in (a Sunn Solos) is an 80 watt amp. So I'm thinking the 28-2360 might not work.

[_peter]

Oh, my bad, I thought you are looking for a tube amp transformer while the Solos is a transistor amp.

Then I can't help you, sorry.

[Kossandr]

It's a Solos, which is actually a hybrid tube preamp, solid state power. The later Solos II's were all solid state. But yeah, I think (from what I can gather from reading online) the power transformers Sunn used in their all tube amps were different.

Unless someone on here knows something different than what I've managed to uncover...

[Lefty Bass Player]

I have some NOS Sunn hybrid PT, these are from the 70s and the manufactures part #394-P6
...8318203 here are the secondary voltages, these are large transformers

2xblue=114vrms.....for the tube preamp
3 wire=red-red/yel-red=42.8vrmsx2....for the solid state power amp
2xyellow=28.5vrms....for?
2xgreen=8.57vrms....tube filament

Hope this helps: Martin