stringgears said:My tweed Super which is a replica is biased at -38vcd but the originals were biased at -42vcd. Anyone know what this would do to the tone?
Old Tele man said:re: "More bias shortens tube life, and can serve to enhance tone to some degree. Less bias introduces crossover distortion, and extremely low bias decreases output power and bandwidth."
...did you possibly mean "More current..." instead of "More bias...shortens tube life,..."?
SUMMARY: More current = more tone today, but less life in the future!
What you really need to ask is at "what bias current" and "what plate voltage" the bias is set at. Forget about crossover distortion and scopes.stringgears said:Thanks for your info.
The guy that built the amp for me does a hell of a job. He mentioned that he set the tubes that way for less noise and less crossover distortion. I"m not concerned of any harm to the tubes but was just wondering if it made much of a difference in tone. The amp doesn't seem to have a lot of that tweed tone as in "mids" that I expected. I have played and owned many original tweed amps over the years that I thought had more mids. The amp does sound great its just not what I quite expected, though I have never owned or played a tweed super before besides this replica, so actually I have never heard what an original sounds like. thanks again.
Old Tele man said:re: "Another pair of the same brand/type of tubes would bias completely differently."
...reminds me of the joke: two Chinese twins are being introduced to two African twins...and one turns to the other and asks "...if THEY'RE twins too, then why don't we ALL look alike?" (a parody on "matching" tubes)