I can only speak on limited tweed experience with my tweed '59 Bassman. As a player/performer I feel like the tweed cabinet is like an instrument unto itself. It is an organic, "living," breathing part of the whole tone equation. With my tweed I notice that I can work with the amp to create tones that I just don't quite get with my MusicMan 112 Sixty Five blackface. I've owned browns (early '60's Brown Tolex Super) and blackfaces. When I discovered my tweed Bassman, I knew it was my main amp for the rest of my life.
Totally agree. I took out two of the three P10R's in my Bandmaster and put in Weber P10Q's, and it cured the flabby bass as well as improved headroom, definition and tonal range.I've found that loose bottom end issues are more due to speaker problems than the circuits themselves.