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Ampeg SVT-3 Pro schematic?

Discussion in 'Amps and Cabs [BG]' started by Shpongled, Jul 12, 2005.

  1. Shpongled


    Jul 12, 2005
    It's long past time to change the tubes on my amp. I have purchased the 1 12AU7 and 4 12AX7 tubes, but when I open up the amp, the old tubes don't say anything on them (I bought this amp used from a friend) and I have no idea where the AU7 goes.

    I have searched the net and these forums and haven't been able to find a schematic for this particular amp. I have found SVT pre-amp and poweramp schematics, but nothing specific. Does that matter? Do all SVTs use the same schematic?

    Thanks in advance for any help! This is an excellent forum!
  2. FC Bass

    FC Bass Alembic and Mesa/Boogie junkie

    Jun 9, 2006

    That should help, got it through Ampeg customer support.
    The other tubes are 12ax7

  3. Just for curiousity, what is wrong with the existing tubes? Do you really need to replace them? If so, why?
  4. Thor

    Thor Gold Supporting Member In Memoriam

    If you need a schematic PM or email TB user
    Jerrold Tiers who works for Ampeg, he can very likely
    give you that in a pdf format.

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