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Thread: Westlake HF Horns

  1. #1
    aust-ted
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    Westlake HF Horns

    Hi I am intrigued by the Westlake HF horns on some of the pics I have seen in this forum such as on Ken's speakers. These are the ones that look like mini 2397s. Can anyone point to any info on them and what drivers do they use?

    Regards
    Ted

  2. #2
    Senior Moment Member Oldmics's Avatar
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    Try this link for a start


    As for drivers-thats all up to your taste and budget


    http://audioheritage.csdco.com/vbull...highlight=2397

  3. #3
    aust-ted
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    Quote Originally Posted by Oldmics
    Try this link for a start


    As for drivers-thats all up to your taste and budget


    http://audioheritage.csdco.com/vbull...highlight=2397
    Oldmics, I was referring to the smaller horn below the 2397 looka like. Have not seen anything on the forum about it. I am reasoinably familiar with the 2397 and Widget's beaut Westlake copy.

    Regards
    Ted

  4. #4
    RIP 2014 Ken Pachkowsky's Avatar
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    Small Horn

    The small horns on my Westlakes use a 2426 driver and are used from 4.5k up to 15k.

    Ken

  5. #5
    aust-ted
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    Ken

    Thanks Do they have vanes in them like the 2397s?

    Regards
    Ted

  6. #6
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    These horns are the large and small horns as found in the Westlake SM-1 system. The large ones have the vanes but the small ones do not.
    Attached Images Attached Images  

  7. #7
    aust-ted
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    John

    Thanks Interesting that the 2" throat driver benefits from a horn with vanes but the 1" does not. That is assuming that Westlake got it right which is a fair bet.

    Regards
    Ted

  8. #8
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    Well for the crazy cash Westlake is asking you would hope so. The large horn is for the most part made to jbl specs with nicer materials and thicker lips, and on the newer ones like I own they increased the vertical height of the inner horn as well to 2". As far as the smaller horn I think westlake designed it from scratch or a few people I have talked to think that tad might of had a hand in the design but I do not know if this is true or not. But they are real gems

  9. #9
    aust-ted
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    John

    Thanks again The similarity with TADs makes you wonder. They look pretty easy to replicate. The throat might be the hard part. One lesson I am learning about acoustics is that simple scaling up or down does not necessarily work otherwise you could use a 2328 as a guide.

    Regards
    Ted

  10. #10
    Super Moderator yggdrasil's Avatar
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    Hi Ted


    I'm doing some research now on smith horns, with help from Widget.

    I have put Bod Smiths formulas into a worksheet, which makes it easy to see what happens when you change the variables.

    I have also used these formulas to try and see how JBL was thinking different from Smith.

    Anyway, using the formulas, with these parameters: 3000Hz, horn height 1cm, 130 degrees mouth. The horn length (i.e vane length) would be 5cm, vane widht would be 4mm.

    I am testing / building a pair now designed to work from 1200Hz. Hope to finish them and start playing sunday / monday.

    PM me if you'd like the worksheet. I can also help out with the drawings.
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    Johnny Haugen Sørgård

  11. #11
    Senior Member Ian Mackenzie's Avatar
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    Its a diffraction wave guide in reality. The wide(vertical height) governs the HF dispersion, this is why the 2 inch 2397 tapers off above 10Khz.

    The same is true of the 2344 which used a 0.75 inch slit for a 16.5khertz constant directivity bandwidth.

    The other physical parameters control LF cut of and hortizontal dispersion.

    Ian

  12. #12
    RIP 2014 Ken Pachkowsky's Avatar
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    Quote Originally Posted by aust-ted
    Ken

    Thanks Do they have vanes in them like the 2397s?

    Regards
    Ted

    Ted

    No they do not.

    Ken

  13. #13
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    Quote Originally Posted by John
    These horns are the large and small horns as found in the Westlake SM-1 system. The large ones have the vanes but the small ones do not.
    Does anybody know,how the small horns sound?
    And does anybody know how or where to get them?

    Regards, Michael

  14. #14
    Senior Member Ian Mackenzie's Avatar
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    I doubt if they are available of the shelf for the home builder.

    Some members have clones Westlake horns , others have diy'd small Smith horns.

    Send a pm to Ken for a slightly biased subjective opinion.

    Ian

  15. #15
    RIP 2014 Ken Pachkowsky's Avatar
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    You bugger!

    Quote Originally Posted by Ian Mackenzie
    I doubt if they are available of the shelf for the home builder.

    Some members have clones Westlake horns , others have diy'd small Smith horns.

    Send a pm to Ken for a slightly biased subjective opinion.

    Ian

    Very funny Ian

    They sound Fantastic! Happy

    Ken

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