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Thread: 416-8A woofers

  1. #1
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    416-8A woofers

    I have a beuatiful pair of 416-8A woofers and need guidance for finding or building the proper enclosure.

  2. #2
    RIP 2011 Zilch's Avatar
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    JBL 4507, QSC 152i waveguide, B&C DE250 HF driver, and Zilch's Z19 crossover....

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    ZILCH-

    you have replied to a post from my brother (amphead4) at audiokarma. he lays out my dilemma and equipment. i am very willing to follow your expertise. i can sell off the tweets, the 811s with the 808a drivers to partially finance the project. I cannot find the QSC 152i waveguides or the cab plans.
    Thanks for your help.

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    thanks

    I have purchased the waveguides you suggested from QSC.

  5. #5
    RIP 2011 Zilch's Avatar
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    Keyword "4507" or "4647" will turn up dimensions, possibly both here and on AK. There have been a couple of builds, but most have found them used, often with 2225H woofers in them, which may be used as-is or reconed to 2234/5H.

    The factory vinyl can be removed with an iron and aluminum foil -- it just kinda shrivels up and off -- and they may then be refinished or veneered. There's a small (1/2"?) recess in the front to accept a grille, and the same recess at the rear.

    152i will fit in the available space on the stock baffle, as I recall, but confirm. I'll have to unpile a bunch of stuff here to verify that myself. It may also be necessary to relocate the 2x4 crossbrace inside to clear the waveguide; nobody's checked that yet....

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    Senior Member grumpy's Avatar
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    often with 2425H woofers in them
    ...more often with 2225H

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    RIP 2011 Zilch's Avatar
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    Yeah, those....

    The answer is "Just." The brace is behind the waveguide flange:
    Attached Images Attached Images  

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    QSC 152i waveguides

    If I haven't asked enough, what are the exact dimensions of these waveguides?
    I think i have found enough info to reproduce the 4507 cabs.
    I have a friend that is a little reluctant about the two-way set up using these components,especially with the lower Hz of the DE250 being 1k. I believe he feels that it is asking too much of the 416-8A.
    Your knowledge and opinions are needed and welcome.
    Thanks

  9. #9
    RIP 2011 Zilch's Avatar
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    QSC 152i is 14" x 10".

    Z19's acoustic crossover is ~1.2 kHz, same circuit as Altec Model 19, basically, which used 416-(8B?) woofers. We're building an updated version of Model 19 here, with a modern waveguide and the compression driver used by Geddes, Parham, EconoWave, and others for similar quality 2-ways.

    There are decidedly few who would assert that Model 19s suck because 416 can't competently play this high....

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    Thank you for all your help!!

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    Senior Member Altec Best's Avatar
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    Are those 416's for sale ?
    "James B. Lansing" = Lansing Manufacturing ~ Altec Lansing ~ JBL

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    For sale

    No, I am sorry they are not for sale. i have a buddy that's house is full of horns, drivers and coned speakers. if you tell me exactly what you are looking for i can see if he has them.

    Mr. Zilch-

    I have been looking for technical data for the 152i waveguides have been unsuccessful. If you have the polar patterns, i would love to see them.

    Thank you to all.

  13. #13
    Senior Member Altec Best's Avatar
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    I'll send you a PM
    "James B. Lansing" = Lansing Manufacturing ~ Altec Lansing ~ JBL

  14. #14
    RIP 2011 Zilch's Avatar
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    Quote Originally Posted by keithsman View Post
    Mr. Zilch-

    I have been looking for technical data for the 152i waveguides have been unsuccessful. If you have the polar patterns, i would love to see them.
    Spec is 90° x 50°

    http://techtalk.parts-express.com/sh...77#post1657677

    http://sites.google.com/site/driverv...c-pl-000446-gp

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