Hi gang,
I am messing around with a standalone 6SL7 preamp, with a 12au7 cathode follower similar to V3 in the Ampeg VT40.
It sounds awesome as-is, but is clearly exceeding the Heater to Cathode rating of the tube (heaters at ground, cathode at 180v)
This is a ship-in-a-bottle type of project, and I don't really have space to make a voltage divider for elevated heaters, are there any changes I can make to the CF circuit to lower that cathode voltage and still keep the output impedance low enough to drive a 10k SS power amp?
Would adding a small anode load be a bad idea?
I am messing around with a standalone 6SL7 preamp, with a 12au7 cathode follower similar to V3 in the Ampeg VT40.
It sounds awesome as-is, but is clearly exceeding the Heater to Cathode rating of the tube (heaters at ground, cathode at 180v)
This is a ship-in-a-bottle type of project, and I don't really have space to make a voltage divider for elevated heaters, are there any changes I can make to the CF circuit to lower that cathode voltage and still keep the output impedance low enough to drive a 10k SS power amp?
Would adding a small anode load be a bad idea?
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