Need a JCM 800 2203 schematic?

Discussion in 'Marshall Amps' started by ItsChrispyTv, Feb 13, 2011.

  1. ItsChrispyTv

    ItsChrispyTv New Member

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    I've been given a mod schematic for a jcm 800, but as i'm new i wanna see what they've changed, does anyone know where i can find a 1980's jcm 800 2203 schematic, vertical input? Needs to be correct!
     
  2. jensbrix

    jensbrix Active Member

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  3. Wilder Amplification

    Wilder Amplification New Member

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  4. ItsChrispyTv

    ItsChrispyTv New Member

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    is there a clearer one available like a ceriatone one or something, i'm not good at reading those ones. I need to see the values and colour n such.
     
  5. TwinACStacks

    TwinACStacks New Member

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    :) Chrispy, If You have a hard time reading a Marshall PCB schematic in Black and White How are you going to be able to Compare and Translate a Colorized Turretboard layout from Ceriatone?

    I'm assuming your vertical input has a PCB with Chassis mounted pots and input jacks with flying leads?

    This is the best one going it's for the Preamp sections of the 2203 and 2204 JCM800:

    http://www.drtube.com/schematics/marshall/2203prem.gif

    :):) TWIN
     
  6. American Viking

    American Viking Well-Known Member

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    +1
     
  7. Wilder Amplification

    Wilder Amplification New Member

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    And you're never going to GET good at reading them if you keep relying on layouts. ;)

    If you really wanna learn amplifiers, how they work and how to mod them, a layout will teach you nothing.

    Start learning some basic electronics and how to read schematics. There are tutorials all over the internet.
     
  8. JayCM800

    JayCM800 Well-Known Member

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    I hope no one gets electrocuted! :rolleyes:
     
  9. Keeb

    Keeb New Member

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    Could you post the mod or is it copyrighted?
     
  10. ItsChrispyTv

    ItsChrispyTv New Member

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    not aloud to post it, Frank has asked me not to, but its on the metro forum, Check this page out, i can't tell you which page it is on, but the clue is, its over 100, under 150, is even, and a factor of 7. Thats as much as i'll give,
    Heres the subject.
    MetroAmp.com Forum • View topic - S.I.R. 100W SuperLead Schematic pt. II
     
  11. Wilder Amplification

    Wilder Amplification New Member

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    If they're trying to say that this layout is #36 or #39 it is far from correct.
     

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