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Thread: 1950-1960's Dukane 15" Low-Boy Speaker model 5A425 & Dukane Spectra-Phase-12 5A440

  1. #1
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    1950-1960's Dukane 15" Low-Boy Speaker model 5A425 & Dukane Spectra-Phase-12 5A440

    I have the following and am wondering if they were made by JBL and is there any value to them.

    1950-1960's Dukane 15" Low-Boy Speaker model 5A425

    Dukane Spectra-Phase-12 5A440
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  2. #2
    Administrator Robh3606's Avatar
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    Well it's definitely not a JBL. Could be an Altec with the vent through the cap. Is that a cast frame or a stamped. Stamped is thin cast is at least 1/16 thick or more usually aluminum.

    Rob
    "I could be arguing in my spare time"

  3. #3
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    I will have to measure them.

    I will have to measure them.

  4. #4
    Senior Member richluvsound's Avatar
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    Magnet ?

    1950 -1960 ferrite magnet

    maybe 1980 - 1990 !

    Rich

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