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Thread: Wood mid high horn plan

  1. #16
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    Quote Originally Posted by yggdrasil View Post
    If you wish to stick with the 1" driver I would consider at least 3 different horns:
    - Yuichi 480
    - http://www.audioheritage.org/vbullet...ct-preparation
    - and last a Smith: http://www.audioheritage.org/vbullet...-1-quot-driver

    At the moment I am using the small Smith horn in one of my systems all the way up. One of the horns rolls off around 15K and the other one around 16K.

    The easiest build is the Smith. Since you are not afraid of the building challenge I urge you to build at least a couple of alternatives and report your experiences back here.

    IME there are quite different HF response with different materials/finishes. So a mockup in MDF/chipboard usually won't give you the best HF response. You need to either apply a good finish or use solid wood, oiled or varnished.

    Johnny
    Hi Johnny
    My choice is for Yuichi 480, the building is not a problem because my woodworker has a pantograph. I fear for final result: I want to be shure that sonically It will be good with JBL 2225h & 2425j.
    Let me know,
    thank you very much
    Giuseppe

  2. #17
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    Quote Originally Posted by audiophile.1963 View Post
    Hi Johnny
    My choice is for Yuichi 480, the building is not a problem because my woodworker has a pantograph. I fear for final result: I want to be shure that sonically It will be good with JBL 2225h & 2425j.
    Let me know,
    thank you very much
    Giuseppe
    ...I have only a final question. Choicing Yuichi 480 can I cut directy right and left corner of the horn? If yes, how much should be the degree of the horn corner? Please let me know it is very important for me.
    Regards
    Giuseppe

  3. #18
    Super Moderator yggdrasil's Avatar
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    Quote Originally Posted by audiophile.1963 View Post
    ...I have only a final question. Choicing Yuichi 480 can I cut directy right and left corner of the horn? If yes, how much should be the degree of the horn corner?
    I'm not sure I understand the question. Try to rephrase it, or show us on a drawing.

    Johnny

  4. #19
    Member reVintage's Avatar
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    Hey Audiophile,
    If you are going to use this in home system you shouldn´t count on a XO-frequency higher than 4-500Hz from the 4560/2225. So you will need a horn and driver that does this. 2"?
    Brgds
    Lars

  5. #20
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    Quote Originally Posted by yggdrasil View Post
    I'm not sure I understand the question. Try to rephrase it, or show us on a drawing.

    Johnny
    This is my idea, like wood horn Fostex. The cut frequency will be around 800/1200Hz
    Giuseppe
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  6. #21
    Super Moderator yggdrasil's Avatar
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    Cutting straight along the red lines will change the horn. I would advice against it.
    Johnny Haugen Sørgård

  7. #22
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    Quote Originally Posted by yggdrasil View Post
    Cutting straight along the red lines will change the horn. I would advice against it.
    OK Thanks, I will respect the original plan
    Giuseppe

  8. #23
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    ... I forgot... where I can find an adapter to connect the driver to the horn? In the original plan It should be in wood but for me Is diffucult to build. I have seen the adapter of old wood horn Fostex but I don't know where to find these metallic adapter!
    Thanks for every help
    Giuseppe
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  9. #24
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    A 480Hz(like Yuichi flare) exponential adapter should be 1,4cm long. If the horn for example is Hypex=0,6, it should be 2,1cm. If making it that thick wood should be no problem.

    What is recommended adapter thickness? THose I´ve seen seems shorter.

    Still if you build that nice horn, what will you fill the gap between 4560/2225 and the horn with?
    Brgds
    Lars

  10. #25
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    Quote Originally Posted by reVintage View Post
    A 480Hz(like Yuichi flare) exponential adapter should be 1,4cm long. If the horn for example is Hypex=0,6, it should be 2,1cm. If making it that thick wood should be no problem.

    What is recommended adapter thickness? THose I´ve seen seems shorter.

    Still if you build that nice horn, what will you fill the gap between 4560/2225 and the horn with?
    My intention is to do a cut crossover frequency at 1200hz, I have a friend with instruments for calculating this. Probably we will modify the volume of the box, I want measure the sound before to finish to restore the boxes so I will be shure of the result.
    About the adapter I will try to built by myself.
    Giuseppe

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