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Thread: JBL 2405 Diaphragm

  1. #1
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    JBL 2405 Diaphragm

    Hi,


    I need some new dias for my 2405.
    The original JBL D16R2405 cost about 180$ each, is there an cheaper equalent to these ?
    I know radian build some very nice dias for the 2"-drivers which sound as good as the original. But I havenīt found something that good for the slots...

    Anyone has an idea and experience


    Thanks a lot,
    Olaf

  2. #2
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    Quote Originally Posted by Dr.db View Post
    Hi,


    I need some new dias for my 2405.
    The original JBL D16R2405 cost about 180$ each, is there an cheaper equalent to these ?
    I know radian build some very nice dias for the 2"-drivers which sound as good as the original. But I havenīt found something that good for the slots...

    Anyone has an idea and experience


    Thanks a lot,
    Olaf
    Yes, been there. Bought a pair of bargain-basement "aftermarket" which I found performed accordingly: poor response (nothing much above 10K) and reduced output compared to genuine JBL of old. So, that project is still on hold. It's an expensive commitment for a pair of diaphragms and have not yet found any solution. Good luck, keep us posted! MM

  3. #3
    Senior Member martin2395's Avatar
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    The "2 Radians does not sound like genuine JBL dia's, they have a smoother, softer sound. I found mine to be oxidizing, 1 year after purchase...

    Don't bother with aftermarket 2405 dia's. You can buy a nice used pair of 2405's for less.

  4. #4
    Senior Member ivica's Avatar
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    Quote Originally Posted by Dr.db View Post
    Hi,


    I need some new dias for my 2405.
    The original JBL D16R2405 cost about 180$ each, is there an cheaper equalent to these ?
    I know radian build some very nice dias for the 2"-drivers which sound as good as the original. But I havenīt found something that good for the slots...

    Anyone has an idea and experience


    Thanks a lot,
    Olaf
    Hi Dr.db,

    If You prefer to use JBL drivers, then ONLY original D16R2405 is acceptable sonic solution, but if You can accept some non JBL drivers, I think that Beyma CP21F ( ring radiator with slot-like horn,
    http://www.usspeaker.com/beyma%20CP21F-1.htm
    1120 U$D per piece) can be a good "approximation" of 2405.

    regars
    ivica

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    Senior Member honkytonkwillie's Avatar
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    Quote Originally Posted by martin2395 View Post
    Don't bother with aftermarket 2405 dia's. You can buy a nice used pair of 2405's for less.
    I'd fear they might also have aftermarket diaphragms.
    I control the treble.
    I control the bass.

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    Quote Originally Posted by honkytonkwillie View Post
    I'd fear they might also have aftermarket diaphragms.
    Yes, and don't forget your Strength of Materials class: any diaphragms work harden with use and ultimately fail. Physics. In fact, I'd say that $186 per is a pretty good price (or was that Euros?). There really is only one choice.

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    Senior Member martin2395's Avatar
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    Euro - Dollar exchange rate is almost 1:1 nowadays

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    Quote Originally Posted by martin2395 View Post
    Euro - Dollar exchange rate is almost 1:1 nowadays
    OK - thanks! The whole Euro experiment is fascinating - bold, progressive. In Michigan we're just trying to figure out how to finance road repairs (voted again yesterday).

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    Thanks a lot for all your answers!!


    My fear with buying used 2405 drivers is, that their dias had been taken abuse over 30years and I cannot tell their condition.

    So I have to go with the original, new dias.
    Maybe I should hurry to get them, who knows if JBL will produce them much longer.

  10. #10
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    Quote Originally Posted by martin2395 View Post
    The "2 Radians... I found mine to be oxidizing, 1 year after purchase...

    Thatīs terrifying!
    Until now Iīve just read positive feedback to the radians....
    Ok, they do not sound like the originals, but I always heard good evaluations about their build quality....

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