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Thread: JBL LX7 Crossover Restore

  1. #16
    Member 2string's Avatar
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    If I decide to get these crossovers restored where should I go to do so?

  2. #17
    Senior Seņor boputnam's Avatar
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    I've looked - I have no schematics in my files. Odd that one has never come-up while I've been here. Doesn't even search!

    Maybe some of the mentors here know better than I do...
    bo

    "Indeed, not!!"

  3. #18
    Member 2string's Avatar
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    Click on the link and scroll down you will see it. Is this what your looking for? I was told a long time ago that the black speaker binding post was positive and the red was negative on some older JBL's. Is this true? How do I test it to find out?
    http://www.audioheritage.org/vbullet...013#post255013

  4. #19
    Senior Member grumpy's Avatar
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    Just means cone will pull in with + terminal of a battery on red.
    Normal convention now is for the cone to push out. Wiring internal
    is usually self consistent with black or black stripe wires going to black terminals.

  5. #20
    Member 2string's Avatar
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    Quote Originally Posted by grumpy View Post
    Just means cone will pull in with + terminal of a battery on red.
    Normal convention now is for the cone to push out. Wiring internal
    is usually self consistent with black or black stripe wires going to black terminals.
    So are my C51's designed to pull in or should they push out or does it really matter as long as they both are moving the same way?

  6. #21
    Senior Member grumpy's Avatar
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    Quote Originally Posted by 2string View Post
    So are my C51's designed to pull in or should they push out or does it really matter as long as they both are moving the same way?
    the latter-est. If it still bothers you, then swap +/- on both input terminals, but it has to be both.

  7. #22
    Member 2string's Avatar
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    Quote Originally Posted by grumpy View Post
    the latter-est. If it still bothers you, then swap +/- on both input terminals, but it has to be both.
    Thanks

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