Older Celestion Speakers...Greenback,Blackback,Cremeback...what the heck?

Discussion in 'Amps and Cabs' started by Timmo, Feb 18, 2009.

  1. Timmo

    Timmo Member

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    Are these different colored covers just a matter of time and/or is there any difference between any of them really?
    Anyone here up on this stuff?
    I'm just more curious than anything else.
    Thanks in advance.


    :AOK
     
  2. realityczech

    realityczech Senior Member

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    Paging Mr. Scumback...
     
  3. Gear Addict

    Gear Addict Member

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    Mr. Scumback will give you a better answer than I but...

    I have a mid 70's (1975 I think) Marshall cab loaded with silverbacks. They are all "greenbacks" of a sort; primarily G12M-25's. I happen to love mine. The important info to know is:

    A. What type of speaker (I am assuming G12M-25's)
    B. What Frequency (55Hz Bass or 75Hz Guitar)
    C. What Cone # (White numbers stamped on the paper cone, readable from the back of the speaker...i.e. T1221) Some of these are considered more desirable than others and hence more valuable.

    What else am I missing guys?

    and of course the TGP caviat....If it sounds good to you than they are worth their weight in gold. :D
     
  4. Griz

    Griz Member

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    There's some information in Michael Doyle's book The History of Marshall. You may also find that the Southbay Ampworks folks can help you out. The discussion forums over at the Plexi Palace may be helpful too.
     
  5. Timmo

    Timmo Member

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    Thanks guys!
    Like I said, just more curious than anything else.
    Seems like there are "all the colors of the rainbow" backs.

    Guess they are the same speaker more or less just different timeframes.
    I'll ask Southbay Ampworks.......
     
  6. realityczech

    realityczech Senior Member

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    Actually the T # i.e. T1221 is stamped on the basket and is a production date code. The cone #'s i.e. 003, 014, 444 ect are stamped on the cone along with a prefix #

    BTW- Mr Scumback is Southbay Ampworks
    Also if you really get stuck drdecibel@celestion.com

    Cheers!
     
  7. Gear Addict

    Gear Addict Member

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    Ditto to what Griz said.

    I should add that it has to do with when they were made. from memory it was

    Green until approx 70
    Cream until approx 74
    Silver until approx 76
    Black until approx 1980

    Someone will correct me I'm sure.
     
  8. Gear Addict

    Gear Addict Member

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    That's right, I had it backwards. Thanks Czech.
     
  9. Timmo

    Timmo Member

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    Cool. Thanks.
    This is kind of what I was after.
    Do blackbacks sound better than say cremebacks just as an example?
     
  10. Scumback Speakers

    Scumback Speakers Gold Supporting Member

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  11. Gear Addict

    Gear Addict Member

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    That's where it starts to go back to the cone types and other details other than the color of the covers. But I think they are pretty much the same speakers.
     
  12. Gear Addict

    Gear Addict Member

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