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Thread: LE-10H repair

  1. #16
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    Quote Originally Posted by 4313B View Post
    wasn't sufficiently dense to do the job....
    Hi 4313B, So, it "did" have a job to do...? What was it put in there for?
    I would have thought it would give resistance to the flow of air behind the dust cap..???
    Thanks,

    DogBox

  2. #17
    Senior Member rdgrimes's Avatar
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    Keeps bugs out, for one thing.

  3. #18
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    Nothing else....

  4. #19
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    Quote Originally Posted by Ralph856 View Post
    Okay, thanks. One spider does seem to lean 'very slightly' downwards nearer the cone- or it could just be completely flat. In comparison, the other one seems to sit upwards more. It's not by much but there is a small difference between both spiders. This is with both their mildewed, disintegrated surrounds removed, so not influencing.

    Looks like the first one could indeed have a small degree of 'sag'. Hopefully it's not enough to worry about..
    ]
    Hi rdgrimes

    No comment on that? Is that degree of sag (if indeed it is sag) significant? What would be a sensible next step? (refoam, recone, throw in trash)

    Thanks.....



    Quote Originally Posted by DogBox View Post
    Nothing else....
    Rats, lizards, and occasionally birds (depending on location)

    Joking aside, I don't know how significant it is or whether the shop that removed it, replaced it with anything.
    Main: PC (optimised) ->U2 Sabre async-> Slagleformer-> Job 225-> L96-> SVS SB12NSD. Bedroom: Audio-GD NFB6-> LCR 6328P

  5. #20
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    Quote Originally Posted by Ralph856 View Post

    No comment on that? Is that degree of sag (if indeed it is sag) significant? What would be a sensible next step? (refoam, recone, throw in trash) , ....I don't know how significant it is or whether the shop that removed it, replaced it with anything.
    Hi Ralph856,
    If the spiders 'seem' ok, (there possibly will be a "slight" difference in the amount of "sag" between the two) and with the cost of just a 'refoam'..
    ..you may just find you have saved them! The spider AFAIK just keeps the voicecoil in alignment, without giving too much actual "support"- the job of the surround. From where I sit, JBL's were made for listening to... NOT for throwing in the trash....

    Steve

  6. #21
    Obviously... not a golfer grumpy's Avatar
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    The spider AFAIK just keeps the voicecoil in alignment, without giving too much actual "support"- the job of the surround
    I don't think that statement can be made as being generally true.

    For some drivers this may be true (suspension duties shared differently between spider and surround),
    ...but for drivers such as the LE10H, with a fairly thin foam surround, little on-axis support/stiffness/suspension
    is available other than from the spider, whose performance remains critical,... the foam surround adding some resistive
    damping and additional centering return force (keeping the cone and voicecoil from twisting off-axis).
    It's uh... uh... it's down there somewhere, let me take another look...

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