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tube swap question

Discussion in 'Amps and Cabs [BG]' started by acexxxoasis, Jul 15, 2005.

  1. acexxxoasis


    Apr 12, 2005
    Ok so it doesnt have to do with Bass amps but its worth a shot. A friend gave me some old tubes he had laying around. 2 6v6s, 3 12ax7s, and a 12au7.

    now for my question I have a fender blues deville that takes 3 12ax7s and 2 6L6s running at 60 watts would I be able to use the 6v6s in place of the 6l6s? Would the 12AU7 work for the main drive tube? Why or why not? anything you would like to add?
  2. I dont think the different power tubes would work, but im not sure

    you should be able to use the 12au7 because isnt it just a lower gain model of the 12ax7
  3. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Seweracuse, NY
    Nope. The 6V6's are different monsters. Won't fit.
  4. Just to clarify: 6V6's will fit in the same socket as a 6L6, but if you attempt to use them, most likely you'll burn them up and destroy your amp. A 6V6 is a MUCH weaker tube than 6L6 and can't take the same voltage or put out near the power.

    If by "drive tube," you mean phase inverter/driver tube, it might, but you'll lose volume because it is a much lower gain tube. The difference in plate impedance might also induce a loud hum depending on how the preamp is hooked to it.

    Why do you want to try it?

  5. Yes, they will fit.
    No do not do it, they are rated at a lower voltage level.
    You will burn them up!