Deluxe model available !!!11
I have an Orange Rockerverb 50 and it could use a little more headroom on the clean channel. I don't know if the current draw would be too much?
very good point Bill, the JJs 6v6s definitely have solid bassThe JJ 6V6-S has much larger plate area than standard 6V6GTs, more like a 6L6GB or 5881. They draw a little bit more current than a 6V6GT but typically provide better bass and more clean headroom without drawing as much current as a 6L6GC.
I'll probably just go the 12At7 or AU7 route in the preamp and see what that does.
that will just lower your gain, its like turning the volume down by half. it does keep you from driving the power tubes as hard, if its the Phase Inverter driver you want a balanced tube, so your driving both power tubes the same.
yes, I go the other way replace 6L6s with a JJs 6v6, but an amp designed for lower power 6v6s will have a lot of problems, output transformer and power supply will be stressed. The speaker would need to be changed or use a different tap, for an 8 ohm speaker you would want the 16 ohm tap, or replace the speaker with one that is half the current impedance, 8ohm replaced with a 4 ohm speaker.
would suggest a gold pin 12DW7 in the drive channel, maybe the other tubes as well, more of a marshall like tone, its lower gain like the 12AT7Well, the result will be more headroom and less overall volume. The drive channel has so much gain as is, it can take a hit and still be fine.
Bias (quiescent power) in output tubes has practically nothing to do with output impedance. Altering bias will not change how the output stage reacts to the load.If you can rebias the amp that would fix the missmatched speaker impedance.
Bias (quiescent power) in output tubes has practically nothing to do with output impedance. Altering bias will not change how the output stage reacts to the load.
I would recommend 12AT7's in the first stage, and possibly the PI as well. IMHO, AT7's sound more focused, with slightly less gain than an AX7.