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Does anyone know the make/year of this speaker?

Discussion in 'Amps and Cabs [BG]' started by Bass 45, Jan 4, 2018.


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  1. Bass 45

    Bass 45

    Jun 23, 2011
    Tempe, Arizona
    Hello - I have had this old film projector extension speaker cabinet for many years and I finally got curious enough to open it up and look at the speaker - but I am not familiar with the codes. Does anyone have any idea of the year and make of the speaker?

    Thank you!

    IMG_3323.JPG
     
  2. Snaxster

    Snaxster

    Nov 29, 2008
    Hello. Can you post a smaller version of the photo?



    ;)
     
    bobcruz likes this.
  3. basscooker

    basscooker Commercial User

    Apr 11, 2010
    cincy ky
    Owner, ChopShopAmps
    What is the enclosure? The make of the cab might help narrow it down. Bell Howard? Ampro? RCA? Sound of Music? Panasonic? Allen and Heath?
     
  4. BadExample

    BadExample

    Jan 21, 2016
    Injiana
    Google those numbers? The first two or three digets are likely the manufacturers code.
     
  5. Kro

    Kro Supporting Member

    May 7, 2003
    New Jersey
    Bob_Ross, Bass 45 and basscooker like this.
  6. basscooker

    basscooker Commercial User

    Apr 11, 2010
    cincy ky
    Owner, ChopShopAmps
    Well I almost got the name, lol. Bell Howard!?! I'm losing my touch.
     
    Bass 45 and Kro like this.
  7. Kro

    Kro Supporting Member

    May 7, 2003
    New Jersey
    That's a win in my book. :)

    Though the speaker isn't exactly the same, I'm hoping that the "12" Heppner Alnico Speaker" provides a good lead for the OP.

    Lots more info that may be helpful in the details of that Reverb listing.
     
    Bass 45 likes this.
  8. agedhorse

    agedhorse SUSPENDED Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    I don't think that's an ALNICO magnet, it could be Heppner, Oaktron, CTS, Eminence or others. Everybody but Eminence is long gone.
     
    AstroSonic and Bass 45 like this.
  9. BadExample

    BadExample

    Jan 21, 2016
    Injiana
  10. Bass 45

    Bass 45

    Jun 23, 2011
    Tempe, Arizona
    Hello - The cabinet is "Bell and Howell". Thanks
     
  11. Bass 45

    Bass 45

    Jun 23, 2011
    Tempe, Arizona
  12. Bass 45

    Bass 45

    Jun 23, 2011
    Tempe, Arizona
    Looks like it's Heppner - I have found a few images showing the 575 code for that brand.
     
  13. Bass 45

    Bass 45

    Jun 23, 2011
    Tempe, Arizona
    Thank you - the cab is the same as the one in the Reverb listing
     
  14. agedhorse

    agedhorse SUSPENDED Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    I still don't think it's ALNICO. I'm pretty sure this is a ceramic magnet, probably from the 60's or even the 70's.

    A lot of early manufacturers of lower level commercial drivers bought from common vendors, so some parts may look identical.
     
  15. beans-on-toast

    beans-on-toast Supporting Member

    Aug 7, 2008
    As you've concluded, the code indicates Heppner but the ones that I've seen in Hammond organs all had smaller sized Alnico magnets on them. This magnet looks like a ceramic which is different from what I've seen from Heppner. I was thinking 68. In the 70's the company was sold and the brand name disappeared. This could rule out 1978.

    Heppner Manufacture. Co. Round Lake, Illinois, USA

    Interesting background info: E. A. Heppner
    could be that the company was bought to obtain any patents that they owned such as this one: Patent US3234339 - Speaker
     
    Last edited: Jan 5, 2018
    Bass 45 likes this.
  16. Snaxster

    Snaxster

    Nov 29, 2008
    Anecdotally, I have come to expect Alnico speaker magnets to have a "plug" shape, more cylinder than disk. For example:

    1.
     
    beans-on-toast and Bass 45 like this.
  17. agedhorse

    agedhorse SUSPENDED Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    They can be built this way, but you usually don't see the pole piece staked onto the back plate the way the Heppner is staked on. Also, Heppner didn't typically (as far as I can recall) build ALNICO magnets this way.
     
  18. hermetic

    hermetic

    May 10, 2016
    Commonly Seen EIA Codes

    Speakers (Drivers only, not cabinets)
    EIA Code
    CTS (Chicago Telephone Supply) 137
    Jensen 220
    Magnavox 232
    DuKane (Operadio Corp) 252
    Quam (Quam-Nichols) 270
    Rola 285
    Utah 328
    Western Electric 336
    Altec Lansing Corp 391
    North American Philips (Norelco) 423
    Oxford 465
    Waldom Electronics 555
    Electro-Voice 649
    Russell Speaker Co 748
    Quincy Speaker Mfr Corp 767
    Klipsch 843
    University 847
    Oaktron 934
     
    Bass 45 likes this.
  19. hermetic

    hermetic

    May 10, 2016
    Bass 45 likes this.
  20. What if the driver isn't original?

    Is OP the first owner of this piece?

    I'm not criticizing, just saying it's a possibility. The magnet also looks ceramic to me, tbh, though it's kinda hard to tell from the angle of the photo for me.
     

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