Champ 25 Power Transformer 039043 Champ 25SE T2 Specs ?

[tubemonster]

Hello

Wondering if anyone happens to know the specs for the Champ 25 Power Transformer 039043 Champ 25SE T2 ?
Or more to the point if the power supply would handle one, two, or three more 12ax7 tubes type thing.
I might be able to get one that needs TLC I was thinking about gutting it and doing an all tube diy build in it, if the power supply can handle some extra 12ax7's that is.

Thanks...

[The Dude]

The mains fuse in the amp is 1A. Each 12AX7 filament will draw 300ma in parallel filament configuration. I doubt the transformer would survive much extra current draw.

[Helmholtz]

The mains fuse in the amp is 1A. Each 12AX7 filament will draw 300ma in parallel filament configuration. I doubt the transformer would survive much extra current draw.

I agree that increased heater current is likely to be a problem for the heater winding.
But I don't understand your point with the mains fuse, as each extra 12AX7 will increase mains current by less than 20mA.

[g1]

I think they would have designed in at least enough leeway to add one. For more than that I would go with an aux. heater transformer, if there is space for one.

[The Dude]

Yes. Agreed. The point about the mains fuse was that it could be an indication of transformer size. In other words, most amps with say 4 or 5 12AX7's and a pair of 6L6's are fused higher than one amp, PROBABLY indicating a larger PT. For clarity: I was NOT saying that 300mA filament draw would increase mains current by the same. My assessment wasn't a scientific assessment- more of a guess based on the practical.

[tubemonster]

Yes. Agreed. The point about the mains fuse was that it could be an indication of transformer size. In other words, most amps with say 4 or 5 12AX7's and a pair of 6L6's are fused higher than one amp, PROBABLY indicating a larger PT. For clarity: I was NOT saying that 300mA filament draw would increase mains current by the same. My assessment wasn't a scientific assessment- more of a guess based on the practical.

I didn't even think about taking a look at the schematic. I suppose they might only use a fuse rated for that specific amp, even if the PT could handle more, however I just passed on the amp. Thanks for the inputs though. It's appreciated.