Cascading preamp stages

Discussion in 'Marshall Amps' started by LPMarshall hack, Dec 18, 2009.

  1. LPMarshall hack

    LPMarshall hack Well-Known Member

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    When they talk about some JMP's as having the "cascading preamp stage", what does that mean? Is a "cascading preamp" desireable? What is the difference between that and a non-cascading preamp? Thanks in advance.
     
  2. LPMarshall hack

    LPMarshall hack Well-Known Member

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    Anyone home? Hello...?
     
  3. Wilder Amplification

    Wilder Amplification New Member

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    The same difference between a Super Lead and a Master Volume (i.e 1959/1987 and a 2203/2204).
     
  4. LPMarshall hack

    LPMarshall hack Well-Known Member

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    Still not clear. I know to get a SL to distort, you must crank it, where a MV can distort at lower volumes. Does a cascading pre amp stage have something to do with this? I'm still not sure what a cascading pre amp stage is and if it is more desireable. Sorry for being so dense.
     
  5. Wilder Amplification

    Wilder Amplification New Member

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    Yes.

    "Cascading" refers to the fact that all of the gain stage outputs run into the next gain stage, like a "daisy chain", or like how you hook your pedals up (out from one and into the next). The 2203/04 is set up in this fashion.

    This is as opposed to "mixing" gain stages, where the outputs of the first two gain stages are 'mixed' via joining the outputs of the two stages together via a couple of resistors. The 1959/87 circuit is set up in this fashion.
     
  6. LPMarshall hack

    LPMarshall hack Well-Known Member

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    Oh I see, so that's what the patch cables are for on a SL...to mix the gain stages? So most modern amps will have a cascading gain stage then right?
     
  7. Wilder Amplification

    Wilder Amplification New Member

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    Yep...and yep. The patch cable on the SL is just to be able to send your guitar signal to both of the first gain stages vice one or the other. The outputs of those stages are then mixed together.
     
  8. LPMarshall hack

    LPMarshall hack Well-Known Member

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    I see. So am I correct in assuming that all modern amps have a cascading gain stage? Thanks for your help.
     
  9. Wilder Amplification

    Wilder Amplification New Member

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    Pretty much...except for the reissue stuff obviously.
     
  10. LPMarshall hack

    LPMarshall hack Well-Known Member

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    You mean the reissue SLP's right? As always...awesome WILDER!!!
     
  11. Wilder Amplification

    Wilder Amplification New Member

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    Reissue SLP as well as the Bluesbreaker RI...basically any 4-input style Marshall.

    And thanks for the kind words. :D
     

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