'83 JCM 800 4x12 cab???

Discussion in 'Amps and Cabs' started by IIIBOOMERIII, May 7, 2008.

  1. IIIBOOMERIII

    IIIBOOMERIII Member

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    I have never opened this cab. What speakers came in
    the JCM 800 4x12 cabs?
     
  2. rob2001

    rob2001 Member

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    1960 A's and 1960 B's from 79' to 83 came with g12m65's

    from 83' to 86' they came with g12m70's.

    Seems in 83' you could have either.

    Thats according to "The History of Marshall book by Michael Doyle.
     
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  3. zzmoore

    zzmoore Member

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    I am just one of the stupid drummers mentioned in your signature, so I wouldn't know. But I do own a screwdriver that you can borrow.;)
     
  4. IIIBOOMERIII

    IIIBOOMERIII Member

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    :agree

    And yet again a drummer proves my point.
     
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  5. Zero

    Zero Member

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    My 1984 JCM800 1960A cab has G12T-75's in it. Purchased brand new. By me.

     
  6. SatelliteAmps

    SatelliteAmps Member

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    The Marshall Book is a good book, but not 100 percent accurate for dating cabinets and what speakers should be in them.

    If you haven't opened the cabinet, how are you dating it as 1983?
     
  7. Lution

    Lution Member

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    actually he gave the smartest advice so far. Borrow his screwdriver and find out for yourself what you have. ;)
     
  8. GrecoVee

    GrecoVee Member

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    Then you must have a one of a kind cab my friend, because according the Marshall `86 catalog I have the 1960 cabs came with G12M-70's. I owned a quite a few Marshall cabs in the past and have never seen one before`87 that had G12T-75's in it.
     
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  9. rob2001

    rob2001 Member

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    Hmmm....:confused:
     
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  10. DEMENTED

    DEMENTED Supporting Member

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    If it sounds crappy , you have the 70's, if it sounds good, you have the 65's!? :rotflmao:BOUNCE:crazyguy;)
     
  11. Zero

    Zero Member

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    It's interesting too in that the metal plate on the back says "280 watts", which would fit the 70 watts you mention. But they are absolutely G12T-75's and this cab has been mine since day one.
     
  12. RockDC

    RockDC Member

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    I'll one up ya to show how a guitar/singer thinks... You can borrow my drill with a screw driver bit. I just saved you 45 minutes :BluesBros
     
  13. Lution

    Lution Member

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    :cool:
     
  14. rob2001

    rob2001 Member

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    Maybe someone at the music store changed them before you bought it.
     
  15. bosstone

    bosstone Member

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    Not getting what is stated on the label isn't all that uncommon. I know that Fender would sometimes put the wrong tube chart inside their pre CBS amps. If you are going to bay big bucks for a real Bassman #864 you better make sure that is the circuit you are getting.
     
  16. rob2001

    rob2001 Member

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    Or maybe it's an anomily from the factory.
     
  17. bosstone

    bosstone Member

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    That kind of "anomaly" from the mfg usually means that one parts bin is empty for one reason or another, like they are back ordered. It that cast they sometimes put in something else that is in stock so they have something to sell. They also can run out of the correct labels or tags.
     
  18. GrecoVee

    GrecoVee Member

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    Could be possiable!, the transition of Marshall cabs useing G12M-70's to the G12T-75's could have a metal plate with the 280 watts rateing on what should be a 300 watt rated cab. I remember checking out at least two Marshall 4x12's that were rated at 260 watts (G12-65's) according to the metal badge on the back but after I open them up they had the crappy sounding G12M-70's(280 watts)!! But there's no way your cab could be an original cab from`84, it would have to be an`86 at the very earliest!
     
  19. Zero

    Zero Member

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    I just pulled the back off of it again. They are G12T-75's, three stamped 15 ohms (?) and one stamped 16 ohms. BUT, the metal tag on the back of the cab is labeled 260 watts, not 280 like a wrote before. Serial # 17605.

    The very latest I would've aquired this cab was early 1985. It's hard to remember. I say between late 1984 and early 1985.

    I also had the thought today that maybe someone at store switched them out. I kind of doubt it though because it wasn't a typical guitar shop. It was a more of a pro audio place.
     
  20. Griz

    Griz Member

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    As long as the cab is stock, a quick way to tell would be to read its rated power handling. My '82 says 260 Watts (four 65 watt speakers).

    Oops. Just read the previous post. How (not) surprising to find a stock Marshall with mixed parts.

    Enjoy the cab. :D
     

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