[quote name='Beer of the Bass' timestamp='1412441082' post='2568996']
Do I remember that you're using a Blues Junior though? I wonder if the master volume makes the difference, as the single volume control on the Princeton is rather like having the master volume stuck on 10 and adjusting the pre-volume.[/quote]
I am indeed using a Blues Jr and again you're right. I set the break up with the volume and control the loudness with the Master control. It's the only amp I've used since I started taking guitar seriously although like Trigger's broom I've changed the speaker, the reverb tank and I am currently having a custom cabinet built for it.
Good luck in your search to resolve this.