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Thread: JBL 3115A crossover circuit diagram

  1. #1
    Member Mazza's Avatar
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    JBL 3115A crossover circuit diagram

    Hi there,
    I'm trying to track down the 3115A crossover circuit diagram.

    All the links I've found here to the JBL Professional site seem to now be dead.

    I have a pair of 2445's on 2385's, hopefully a pair of 2226's (coming soon) and some salvaged 4331a enclosures that I'd like to mash up into a system.

    Seems this will be a close match for the 4673.

    Any help very much appreciated! Thank you

    Cheers!

  2. #2
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    Tough network to copy due to the tapped coil.

    Here it is though.

    Attached Images Attached Images

  3. #3
    Member Mazza's Avatar
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    Thank you EarlK!

    I will use the original schematic for inspiration/a starting point/sense check my design.

    I have already measured the 2445's on the 2385's freestanding and IMHO they perform great, certainly better than I expected....


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    I've been able to mock up a crossover that gets them nice and flat on axis with a theoretical 800hz(ish) highpass....

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    But wanted to see how JBL implemented their approach - learn from the masters.


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