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Thread: Need help for 4315 crossover

  1. #1
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    Need help for 4315 crossover

    Hi,
    Inside this messy crossover, one of those capacitors is dead.
    Reference number is 1068-7820, it is the one for the 12db low pass.
    Please, anyone can tell me the value of this capacitor.
    Many thanks,
    Philippe.

  2. #2
    Moderator hjames's Avatar
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    Quote Originally Posted by mideale View Post
    Hi,
    Inside this messy crossover, one of those capacitors is dead.
    Reference number is 1068-7820, it is the one for the 12db low pass.
    Please, anyone can tell me the value of this capacitor.
    Many thanks,
    Philippe.
    Here are the various schematics ...

    from a 4315 References thread ...


    Link to 3114 Crossover network (for 4315) at JBL Pro (dated 07/74)
    http://www.jblproservice.com/pdf/Net...%20Network.pdf


    Link to 3114A Crossover network (for 4315A & B) at JBL Pro (dated 3/76)
    http://www.jblproservice.com/pdf/Net...%20Network.pdf

    Also see Techbot link here -
    http://www.audioheritage.org/vbulletin/showthread.php?t=10615
    2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
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  3. #3
    Administrator Mr. Widget's Avatar
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    I suppose you mean this one circled in red? You should be able to find Solens or another brand of metallized polypropylene capacitors to replace it. I guess I would do the pair of speakers.

    I assume the originals are NP electrolytics or maybe mylars, in either case new metallized polypropylene capacitors will be better.


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