skyboltone wrote: there is something going on I don't understand. The liverpool schematics call for the lower voltage.
I think you're worrying about things that are long since solved.
The power tranny is taken directly from KFs line card. His Pacific line card is the same even though the spec numbers are slightly different, because the pacifics are spec'd to 115V and the Heyboers are 120V. Point being, if you buy a 5199 or the equivalent Pacific, you're getting what was used originally.
The numbers on the schematics were measured or guessed at some time in the past on one amp in one configuration with one mains voltage and one set of tubes and passed down across the generations of schematics. God Bless Ron and Dr Hulsey for putting them all together and including values, but they recorded what was already written. I gives a good guess about where you should be, but can't be relied on as the "perfect" number.
In the real world, a difference in mains voltage of 5V will give a difference in a secondary of nearly 15V. For example, If I carefully choose round numbers to make the math easy, a 120V mains producing 330V is about 2.75 to one.
If that same mains voltage drops to 115V, we'll see just over 316V in a theoretical world.
Here's a real world example. My wall voltage at the moment is between 123 and 124V (according to my power conditioner). That same 330V secondary at 120V primary would, plugged in here at this instant, be close to 340V (2.75 * 123.5 = 339.625).
The tube complement makes a difference (I've seen pretty substantial B+ differences on amps when swapping brands on a quad of EL84s), your rectifier for a Rocket makes a difference, too.
All that said, the point is to use whatever PT gets you close to what you want and tailor it from there.
