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Peavey tour 450 drivers

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  • Peavey tour 450 drivers

    The shop that I am working with gave me this amp to repair. First thing I noticed is that q25 and q26 is missing (still unclear why..they bought it on a trade and didn't test it). Schematic says these are 2sa1837 and a 2sc4783. It appears these are in obsolete territory so I ordered some mje1503x. You guys have any luck with this replacement? I plan to to get these in and do some testing on the dim bulb. Lastly, is poplulating Q9 and Q14 the only difference between a 450 and 700?

  • #2
    Q9 means nothing without a schematic.
    "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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    • #3
      Sorry that is just an additional set of outputs that were never populated.Click image for larger version

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      • #4
        Well as soon as I posted that schematic, I noticed a list of 450 changes at the bottom that I initially missed..guess that answers that. Still would like to know about the substitution though if anyone has any input.

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        • #5
          Yep. I'd use MJE15032 & MJE15033.
          "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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          • #6
            Thanks Dude.

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