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Thread: 4612/ 4612A/ 4612OK crossover schematic?

  1. #1
    Senior Member GordonW's Avatar
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    4612/ 4612A/ 4612OK crossover schematic?

    Hey, does anyone have the JBL service/tech sheet on the 4612 system? I specifically need the crossover schematic, more than anything. I've been handed an empty pair of 4612 cabinets, that I need to get working... first step, is to build a new set of crossovers. I think I've got everything else handled (drivers, etc) but can't find the 4612 in any of the service manuals I have...

    Thanks!

    Regards,
    Gordon.

  2. #2
    Member sebackman's Avatar
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    Hi GordonW

    You have PM

    //RoB
    The solution to the problem changes the problem.
    -And always remember that all of your equipment was made by the lowest bidder

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    Gordon - just yesterday I closed on a pair of 4612OK, primarily because I was looking for a pair of 2404H drivers, so I just got the whole set. In addition to schematics posted, let me know if you have any other questions - they should be here in a few days. I *may* be parting them out at some time...

    What use are you planning for them?

    John

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    Senior Member GordonW's Avatar
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    Giskard, thanks, got it.

    John, I may be interested in some of the parts... I may possibly want some of the 2118Hs. I'm probably going to build a set of crossovers... as simple as they are, I should be able to knock these out in no time...

    Thanks again, both of y'all...

    Regards,
    Gordon.

  6. #6
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    I may possibly want some of the 2118Hs.
    I believe you'll find JBL used the 16 ohm 2118J in the 4612 series. Two in parallel for 8 ohm total on the lows.

    John

  7. #7
    Senior Member GordonW's Avatar
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    Thanks for the tip, I sussed that out for myself during the day, after wondering about that. To get 8 ohms total with the crossover they had, the woofers would kinda HAVE to be J's...

    Regards,
    Gordon.

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