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Thread: Frugel horn. Would somebody care to explain the design?

  1. #21
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    Quote Originally Posted by Macca View Post
    I don't think sticking them in a corner would really help unless you are a fan of the Audionote comedy mid-bass hump.
    The corner presumably acts as a continuation of the horn originating in the cabinet, meaning that the corner shape should be regarded as part of the speaker. The major flare of the horn mouth actually. Bass should be very clean and well controlled, so no hump if the design is good.

  2. #22
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    Quote Originally Posted by Stratmangler View Post
    That's not a bad guess - the corner frequency is 13kHz according to the crossover calculators, and it's a first order filter
    A first order filter should be just right in that application, why complicate things?

  3. #23
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    Quote Originally Posted by walpurgis View Post
    A first order filter should be just right in that application, why complicate things?
    Absolutely!
    You do have to attenuate the tweeter properly - with 6dB per octave slopes it's easy to overcook things. Just 1 octave down and you're playing in the 7 to 7.5kHZ area, which is very readily apparent if things are too hot.
    Chris



    Common sense isn't anymore!

  4. #24
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    Quote Originally Posted by Macca View Post
    Downside: no bass, unless you count lower mids as bass (I know lot of people do), limited HF response.
    You can get deep enough bass from small drivers. The output will be limited, but the depth can be surprising. Anybody remember the 'Daline' design using a five inch KEF B110?

    Here (it's not in English): http://forum2.zelfbouwaudio.nl/viewtopic.php?t=11984

    It was capable of output down to 30Hz.

  5. #25
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    What speakers are they Chris ?
    Quote Originally Posted by Stratmangler View Post
    The design is for a single wide bandwidth driver.
    The only reason for the tweeter helper is because there's an obvious roll off at the top end of the drivers I have in my speakers.
    If you want something like a conventional speaker get a conventional speaker.
    "Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
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  6. #26
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    Quote Originally Posted by anthonyTD View Post
    What speakers are they Chris ?
    Alpair 7.3 wideband and ERT-26 tweeter.
    Chris



    Common sense isn't anymore!

  7. #27
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    Ahh, ok, what about the cabinet, I am asking as I have some Jordan Drive units that I am toying building something with.
    Quote Originally Posted by Stratmangler View Post
    Alpair 7.3 wideband and ERT-26 tweeter.
    "Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
    Nikola Tesla



    Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
    A fish is only as healthy as the water its swimming in ! [Dr Robert Young]


    www.tubedistinctions.co.uk

    Matthew 5:10

  8. #28
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    The corner coupling idea is not new. See in this drawing of the Klipsch Corner Horn where the walls form part of the speaker horn.

    .

  9. #29
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    Lowthers posibly
    Quote Originally Posted by RothwellAudio View Post
    Maybe I'm prejudiced against full range drivers after hearing some horrible examples with very "shouty" treble.

    "Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
    Nikola Tesla



    Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
    A fish is only as healthy as the water its swimming in ! [Dr Robert Young]


    www.tubedistinctions.co.uk

    Matthew 5:10

  10. #30
    Join Date: Nov 2008

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    Quote Originally Posted by anthonyTD View Post
    Ahh, ok, what about the cabinet, I am asking as I have some Jordan Drive units that I am toying with building something with.
    Frugel Horn FH3.

    Chris



    Common sense isn't anymore!

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