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Thread: Help to identify JBL 2" driver

  1. #1
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    Help to identify JBL 2" driver

    Hi Folks,

    I picked up a pair of drivers this morning thinking they were JBL. However upon further inspection I'm not so sure. Unfortunately the backplates were missing and what you see in the pictures is what I got.

    Any help to identify what they are would be much appreciated.

    John
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  2. #2
    Senior Member edgewound's Avatar
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    375....Looks like it, anyway.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

  3. #3
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    LOOKS LIKE THE FRONT HALF OF A 375 SHOWING THE PHASE PLUG,,,,minus the voicecoil and diaphram and back casing..
    Vlad

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    I think I've sussed it.

    Many thanks Maron and Edgewound. I also thought they looked like 375s when I was purchasing them

    Having spent the last 4 or so hours scanning the internet I think I may have figured out what they are. The look distinctly like Gauss 4000 or 4061 depending on who you listen to.

    The following picture is from Speakerplan forum, actually posted by "jbl_man" and here's a link with some information.

    http://forum.speakerplans.com/pair-g...topic9088.html

    Cheers

    John
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  5. #5
    Senior Member Mike F's Avatar
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    The Gauss HF 4000 had 4.125" voicecoils FWIW

  6. #6
    Obviously... not a golfer grumpy's Avatar
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    bolt heads on surface?

    This looks more like what I remember re 375 drivers (not having one in my hand to look at):

    http://www.audioheritage.org/vbullet...-375-questions
    It's uh... uh... it's down there somewhere, let me take another look...

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    Thanks again

    Mike,

    Thanks for that! From what I've come across so far the 4000 and 4061 have different dias, so next step is to determine precisely what I have. Then I will get some dias, which I believe are hard to come across nowadays. Plus I need to source some backplates as well

    Grumpy,

    I knew they were not 375 when I compared them to 2440 and 2441 I have in the front room.

    Thankfully the drivers were pretty cheap and included in the deal were 2 x 2310s in reasonable salvageable condition.

    John

  8. #8
    Obviously... not a golfer grumpy's Avatar
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    Sure, I was just adding that for completeness sake, should someone else run across this thread years from now.
    It's uh... uh... it's down there somewhere, let me take another look...

  9. #9
    Senior Member edgewound's Avatar
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    Quote Originally Posted by hugemc View Post
    Many thanks Maron and Edgewound. I also thought they looked like 375s when I was purchasing them

    Having spent the last 4 or so hours scanning the internet I think I may have figured out what they are. The look distinctly like Gauss 4000 or 4061 depending on who you listen to.

    The following picture is from Speakerplan forum, actually posted by "jbl_man" and here's a link with some information.

    http://forum.speakerplans.com/pair-g...topic9088.html

    Cheers

    John
    Good detective work. I should've recognized that beast. I haven't seen one in my shop for close to twenty years. I've got one NOS diaphragm on hand...not sure if it's 8 or 16 ohms.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

  10. #10
    Senior Member tomt's Avatar
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    bottom of the first chart -


    http://www.greatplainsaudio.com/parts.html

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