Anyone here play a lot thru a tweed Bassman? I’ve started playing more thru mine and am interested in what settings you use. I jumper the channels, but haven’t settled on vol/vol, treb, bass, mid, presence settings. Thanks.
Depends what you want...there are two different tone stack circuits; the early .02/.02/250/56K and the later BF style tonestack values (as used in the RI). I favor the early one as it's more guitar-friendly and I keep the tone settings around 3.5 for bass, 7 for treble and middle, and presence as needed. All bets are off for the later tone stack as I don't have much use for it.
Easy enough to tell which circuit it is---right there on the board. Most of the early ones have the .02/.02 bass and mid cap values, later ones went to .1/.02 pretty consistently. To me, they're like two different amps. Why they picked those values (among other things) for the RI is beyond my understanding.
I also believe that the100/0.1/0.02 is the best known 5F6A sound without a doubt. That's great that you did that, is there any chance you can post a sound sample that illustrates the differences you're hearing? (Hint: this would make a great YouTube video)! Let us know how you feel after you spend some more time switching back and forth. Thanks for that.This thread sparked my interest in the 5f6a tonestack again and tonight I put both options on a switch. I tried for about half an hour to go back and forth, with various control settings, to see which one I liked most. I must say that I have not made my mind up yet. It is quite a difference, the schematic values are quite a lot more mid rangy, and more 'normal' sounding. You cannot make one sound like the other with just the controls. But I believe that the great sound that this YouTuber Millstap gets from his 1960 is definately the 100k/0.1/0.02 version.
Highly recommend a 12AU7 in the cathode follower tube slot (V2, middle preamp slot). To my ears, it sweetens up the EQ section and just makes the whole range of the controls nice on the ears. Basically makes almost any settings sound good, just a matter of pick your favorite piece of the pie. Doesn't hurt to try.