Hey, anyone called Chevelle deserves an answer. Unfortunately you have not quite supplied all of the needed information. Looking through the Hammond catalog, I don't find a transformer that exactly matches your description. An amp with 3X EL-84 can draw anywhere from 120 mA to 200 mA. Most Hammond transformers are rated for a maximum DC output with a cap input filter. In this case a 150 mA transformer would be marginal. You can draw about 170 mA if you used a choke input filter. If you do this, keep the bias adjusted on the low side until you see how hot the transformer gets. A lot depends on available ventillation, and the intended use of the amp. If this is going to be a guitar amp, with the volume "cranked to eleven" a lot, I would look for a bigger transformer.
I would suggest going Push-Pull and just using a pair of EL84s, the transformer would be happier.
Otherwise give it a shot and see if it gets too hot- if it does, switch to a GZ34 / 5AR4 rectifier (less filament current) and use a separate 6.3V transformer for all the tube heaters...
Otherwise give it a shot and see if it gets too hot- if it does, switch to a GZ34 / 5AR4 rectifier (less filament current) and use a separate 6.3V transformer for all the tube heaters...
Hey, anyone called Chevelle deserves an answer.
Amen Tubelab!
I just have to ask tho,What year is it?
(Mine's a '67,and I *love* it!)
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