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08-05-2025, 01:49 PM
Hi everyone. I'm looking for some input. I had a custom-built amp come in the shop that essentially is one channel a 60's Fender Bandmaster with a three-tube spring reverb unit in front. The transformers are a Super Reverb clone for the power and Bassman clone for the output. The thing I'm concerned about is current draw on the high voltage secondary since the amp is now powering a 6K6 power tube in the reverb portion as well as the 6L6GCs.
The power transformer has rating of 300 ma for the 325-0-325 secondary. In a Super Reverb with a 5U4GB about 248 ma would be drawn leaving a healthy safely margin. My best calculation is that this circuit would draw about 270 ma. Is that enough of a safety margin? The 6k6 is drawing about 30 ma. Should I be concerned?
The power transformer has rating of 300 ma for the 325-0-325 secondary. In a Super Reverb with a 5U4GB about 248 ma would be drawn leaving a healthy safely margin. My best calculation is that this circuit would draw about 270 ma. Is that enough of a safety margin? The 6k6 is drawing about 30 ma. Should I be concerned?
