WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
I would like to use my Lundahl LL1620 SE output transformers with a 6550 in UL mode.
Is it correct when I connect taps 1/6 to the screen grid I get a 25% UL tap ? (see attachment)
Is this OK or should it be the more common 43% ?
Yes, the connection you show will give you a 25% tap. Whether you will like the sound of that more than some other tap location I consider a matter for experimentation rather than following someone else's recipe.
