Speaker Anatomy Question..!

Discussion in 'Gear Chat' started by Poodlesrule, Mar 15, 2019 at 8:47 AM.

  1. Poodlesrule

    Poodlesrule Well-Known Member

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    I have this blown 15" bass speaker, 1980's JBL, beautiful cone, but not working.

    As I do not have direct experience with the anatomy of the typical speaker, generally, where is the probable point of failure on my specimen, and/or most other speaker failures?

    BTW, the aluminum basket of this here JBL is a thing of beauty... and heavy! Poor bass players of yesteryear.
     
  2. mozz

    mozz Well-Known Member Supporting Member

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    Gonna say the voice coil is open. Most Jbl and other top brands can be rebuilt. If it is cost effective, can't answer that.
     
  3. Mickey

    Mickey Gandalf the Intonationer

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    Depends on the model with JBL's.
    Some are worth $400+ if rebuilt, while some are worth $400+ if needing to be rebuilt.
    Others are not.
    Steel players & Chet Atkins style players covet some models.
    They were the speakers used in the coveted 1950's Standel amps.
    I have been amazed at the prices some will bring on eBay.
    I have a couple of 3 way stereo speakers from the 1960's with 104's in them,
    the JBL's in them are worth more than the cabinets
    well, if the cabinets weren't solid walnut. :)
     

  4. Poodlesrule

    Poodlesrule Well-Known Member

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    I am trying to sell it on CL and not trash it - there seem to be a following for these JBL family in some circles, so it may find a new suitable home.
     
  5. mozz

    mozz Well-Known Member Supporting Member

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    I wouldn't CL, Reverb is a lot more likely to get your asking price.
     
  6. Poodlesrule

    Poodlesrule Well-Known Member

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    Well, two things, I am working "best offer", and that speaker is massively heavy. I just had another close look at the external part of the cone, no tear or anything. Came out of a ported Thiele bass cabinet I got from CL, free, now home to my 15" Eminence Legend, which is breaking in nicely...!
     
  7. mozz

    mozz Well-Known Member Supporting Member

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    Heavy no doubt. If the voice coil is bad, they tear the speaker apart and replace the cone as well.

    Sometimes, and maybe 1% of the time, the wire from the lugs to the voice coil is bad, known as the tinsel, and can be repaired. Next 1% is under the dust cap where the tinsel connects to the voice coil wires.

    I think they charge about $100 for recone?
     
  8. dspellman

    dspellman Well-Known Member

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    My suggestion, if that's a real Thiele-type cabinet (Electrovoice 806) is to beg, buy or borrow an Eminence Delta Pro 12A (they don't live in the guitar section, but in the Pro Audio part, or here on Amazon:
    )

    The Legend, sadly, won't really take advantage of the cabinet. It was designed for the EV-L. But the Delta Pro 12A...hooocheee mama.
     
  9. Poodlesrule

    Poodlesrule Well-Known Member

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    I have seen the Delta Pro on the Eminence site.
    The retired bass cab + Legend pairing was an experiment to see what a 15" sounded like. Nice low end, as, some days, I use the guitar more like a percussion instrument. Bonus: the mice living below left, somehow...
     

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