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Thread: Are these 2450SL diaphragms ok?

  1. #1
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    Are these 2450SL diaphragms ok?

    I have bought a pair of what I believed to be new 2450SL diaphragms.

    They are not alike, one having something on the top of the diaphragm.
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  2. #2
    Senior Member 1audiohack's Avatar
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    I have seen the little aluminum stick on dots on many JBL diaphragms. They appear to be from different lots but that may not be an issue.

    I have some that are now in box. i will look at them after work this evening and tell you what I see.

    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  3. #3
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    Hi,

    I just looked at a pair of my 2450SL diaphragms, they both have the previously noted small dot ( though, they are painted over with aquaplas ).

    BTW, one of those dots on my SL's, was almost imperceptible ( ie; virtually buried under the aquaplas ).

    The following ( "hard-to-see" dot ) is quite consistent with the "look" of the first pic ( belonging to more10 ).

    Name:  Clipboard01_D82450SL.jpg
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    - In fact, I can see the outline of said buried dot in his last pic ( when using magnification ).



    So yes, the dots are supposed to be there ( though they are usually buried under the plastic paint ).

    Also ( fwiw ), these dots are standard issue on all the older 2441/2445 diaphragms that I have ( the un-ribbed D82445 is the base diaphragm for the 2450SL, becoming a D82450SL once painted with aquaplas ).


  4. #4
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    Thanks for replies!

  5. #5
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    Quote Originally Posted by more10 View Post
    Thanks for replies!
    You're welcome!


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