Just bought a silverface bassman 50W 1968 with the 2x12 cab. It must be one of the earliest silverfaces, possibly blackface circuit? I'm very happy with the sound, it's just what i'm looking for. This is also my first tube amp and first "real" amp. My only concern is the volume! Yes, I have realistic expectations on a 50W amp, and yes, I know that the old fender cabs are not considered great. With that said, can someone give me any tips for getting the most out of this setup volume-wise? I have no problems with a little grit/overdrive, but now it's farting out all over the E-string with volume at 3,5! Guessing that the speakers are responsible for this fart sound? First step is to change the drivers to eminence beta 12. Thoughts on this? What can I expect? I guess that a tune-up of the amp only makes marginal difference. The tubes are svetlanas, don't know about the capacitor condition. Maybe I shouldn't expect miracles from a capacitor change and bias adjustment? What about jumping the channels together? I use the normal channel, it seems more focused. Any inputs on tone settings or channel jumping on a bassman? Or other ideas or tips? Thanks!