If you're sugesting a simple voltage divider pot, the pot and buffer I just laid out ought to run circles around it.

Since I have a feeling that there is substantial prejudice against SS stuff, I thought to show a way it could be used to good effect. Always use the best design to solve the problem. Sometimes it might just be a SS one. FWIW, I don't recall anybody complaining about the performance Guenivere delivered.
regards,
Douglas

The suggested PS of 60-0-60 would yeild ~50 volts at the L-C filters.