Vintage G12t-75 Question?

Discussion in 'Cabinets & Speakers' started by 1956tvmodel, Jan 10, 2018.

  1. 1956tvmodel

    1956tvmodel New Member

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    I have 2 mid 80's JCM 800 1960 4x12 speaker cabinets. Recently i replaced the original Celestion G12T-75s to make room for a quad of Greenback Reissues. I noticed in one of the cabinets the 75's have what looks like a small screen in the center of the speaker magnet while the other ones have just a hole in the center. Never noticed this before. Does anyone know what is the difference between the two or what is the purpose of the screen or the hole. I cant remember which ones i bought first. Is one an earlier design? I bought the cabs within a year or so of eachother around 85 or 86. Ive included some pics of the two speakers
    Thanks
    Mike
     

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  2. Gunner64

    Gunner64 Well-Known Member

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    They're vented 75s..the vent was to dissipate heat. some say they are more desirable then unvented 75s. The vented ones I believe are earlier. I know they are rarer. I love 80s 75s..either version.
     
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  3. 1956tvmodel

    1956tvmodel New Member

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    Cool. Thanks for the info!
     
  4. soundboy57

    soundboy57 Well-Known Member

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    I often forget how old I am, being at first surprised that G12T 75 are now "vintage".
    I suppose anything from the 90s is now "vintage" as well.
    I need to invest in some Dual Reverbs for retirement I guess.
    Just sayin'
     
  5. 1956tvmodel

    1956tvmodel New Member

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  6. Kris Ford

    Kris Ford Well-Known Member

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  7. SpHj

    SpHj Active Member

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    Vented are earlier. I’ve got a quad from ‘84. Killer speakers.
     
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  8. GIBSON67

    GIBSON67 Well-Known Member

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    Give us the codes on the frames and we'll pinpoint their manufacture date. Earliest I've seen is 1984, too.
     
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  9. 1956tvmodel

    1956tvmodel New Member

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    The code on the frame of my speakers are CT11
     
  10. GIBSON67

    GIBSON67 Well-Known Member

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    CT11 = March 11, 1985.
     
  11. Dmann

    Dmann Well-Known Member

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    It's refreshing to see someone whom agrees with my assessment of this speaker.

    Cheers
     
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