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Thread: JBL 076's or 2403's

  1. #16
    Senior Seņor boputnam's Avatar
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    Quote Originally Posted by Ken Pachkowsky
    I am going with a single on the inside of each cab.
    Hey, Ken...

    Those look nice. You might play with them loose, first - alternating between the inside and outer position (resting atop the cabinet). My instinct would be the outer position should open-up the soundstage substantially.
    bo

    "Indeed, not!!"

  2. #17
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by Ken Pachkowsky
    I sent JBL 3 emails with no reply to any of the 3.

    I would love to have these as stock 2403/076's.

    Ken
    A week or two back I helped Zilch install 2403 diaphragms in his Mike Caldwell horns. He had ordered them from JBL Pro with no problems.

    Widget

  3. #18
    RIP 2014 Ken Pachkowsky's Avatar
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    Quote Originally Posted by boputnam
    Hey, Ken...

    Those look nice. You might play with them loose, first - alternating between the inside and outer position (resting atop the cabinet). My instinct would be the outer position should open-up the soundstage substantially.
    Hi Bo

    Nice to hear from you. Other issues have been pointed out by others more knowledgeable than I. Their suggestions coincide with yours. I will not install them on the baffles at all but rather build nice walnut boxes to sit on top centered on the cabs.

    Ken

  4. #19
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    Hi Ken Are the large horns on those westlake's flat on the outer top and bottom panels from the front upper and lower lip back to the baffle

  5. #20
    Administrator Mr. Widget's Avatar
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    Looks curved. I believe the older ones are curved and newer ones are flat.

    Widget
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  6. #21
    RIP 2014 Ken Pachkowsky's Avatar
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    Quote Originally Posted by Mr. Widget
    Looks curved. I believe the older ones are curved and newer ones are flat.

    Widget
    To the best of my knowledge, you are right. The older ones are 99.5% made of solid walnut and curved on the bottom but flat on top. The later models came in Maple, Mahogany and Walnut. I know they also did a custom run for a large New York studio in Brazilian Rosewood at 8 grand a pair. They ordered 4 pair. I would love to get my hands on a pair of those. Can you imagine, 32 grand just for horns. I was told the reason for switching to a flat bottom was pure economics. The reflection issues the rounded bottom prevented were resolved by altering the crossover's. How a crossover change makes a difference in reflections is beyond my limited knowledge.

    Ken

  7. #22
    RIP 2011 Zilch's Avatar
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    Quote Originally Posted by Mr. Widget
    A week or two back I helped Zilch install 2403 diaphragms in his Mike Caldwell horns. He had ordered them from JBL Pro with no problems.
    I confirm, D8R076's are available from JBL Pro.

    What Mr. Widget kindly didn't mention is that I dinged one of them doing my part of the installation (the soldering). The magnet pulled the plastic handle of a small screwdriver I was using to manipulate the wires into it. Handle had a steel pocket clip on it I was not paying attention to.

    [Next time I use a toothpick, or somethin'....]

  8. #23
    RIP 2014 Ken Pachkowsky's Avatar
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    Ahh Zilch, thats a bugger...

    I will call them on Monday. Thank for the help.

    Ken

  9. #24
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    Thanks for the info. In the other pictures you have posted I did not notice that curve in the lower horn. I have seen the older westlake horns a few times before with that curve but it was always on the smaller vertical opening style and never in the newer ones with the increased vertical dimension. The large format westlake horns I have are of the newer style with the 2 inch vertical dimension and are ruler flat top and bottom.
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  10. #25
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    Hi John,


    Your horns are of the newer versions and the vertical height is bigger compared to the old version...
    Has westlake remained the other dimensions of the horn or have these changed too?

    The older version used the JBL 2328 throat-adapter. How are horndrivers mounted onto the newer version?

    Best regards,
    Olaf

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