Thanks Max! Do not worry, I'm building tube amps since 1989. I have some 6080's here but the 6L6 is interesting. BTW, did you notice a difference in sound between pentode and triode regulators? Cos actually I have never used a triode reg - shame on me!
Hi,
If you use 6080 ( 6AS7G ) in parallel you have at dispose more current reserve and lower resistance through the tube but ECC83 will work harder to regulate DC because of low amplification factor... since you have one you can try and see how it goes. You can also use voltage tube regulator ( 85A1 or 85A2 ) instead of zener diode for full tube regulator!
I don't remember difference in sound because I didn't compare them in the same amp.
If you use 6080 ( 6AS7G ) in parallel you have at dispose more current reserve and lower resistance through the tube but ECC83 will work harder to regulate DC because of low amplification factor... since you have one you can try and see how it goes. You can also use voltage tube regulator ( 85A1 or 85A2 ) instead of zener diode for full tube regulator!
I don't remember difference in sound because I didn't compare them in the same amp.
As long as the floating heater supplies for the 6080's is tied to the output its no issue. The winding on the transformer will need sufficient insulation through
The differential voltage the 6080 sees is also in spec.
However 100V headroom can be too low in low mains voltage conditions and full load operation. Depending on supply impedance and mains variations your supply could fall out of regulation if the mains voltage fluctuates too much.
You will need a second heater supply for the error amplifier. Because its cathode will be closer to ground.
The differential voltage the 6080 sees is also in spec.
However 100V headroom can be too low in low mains voltage conditions and full load operation. Depending on supply impedance and mains variations your supply could fall out of regulation if the mains voltage fluctuates too much.
You will need a second heater supply for the error amplifier. Because its cathode will be closer to ground.
You are right at the limit of the 6080's Heater to Cathode voltage.
If you have the room for another transformer, I would heat the 6080 and it's error amplifier valve(s) on a new transformer biased up to 150V or so.
Also, as v4lve lover pointed out, you are at the very low end of the 6080's plate to cathode voltage. 150V would be much better.
I'm in the process of building one of these right now...
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