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Thread: Speaker setup

  1. #21
    Join Date: Nov 2011

    Location: wirral

    Posts: 231
    I'm frank.

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    Interesting idea/subject!

    I don't think the wavefronts meeting 'earlier' is an issue.

    AIUI The toe in is not designed to modify the frequency response at the ears but to shift the position of and delay the first reflection.
    Within the parameters of the adjustment, the horizontal dispersion of the speakers ideally should be the pretty much same at the off axis position as on axis(in terms of freq response) so all things being equal the interference patterns of the spherical wavefronts would be no different. You could argue it's when the toe in sounds wrong that you have exceeded the coverage pattern of the speakers and may well then shift the position of the +/- interference locations in space. I'm blessed with the conical dispersion of Tannoy Dual Concentric so tend not to worry too much about weird of axis response/phase issues of more conventional arrangements.
    Last edited by cooky; 26-01-2021 at 07:50. Reason: clarification

  2. #22
    Join Date: Mar 2010

    Location: Cardiff

    Posts: 390
    I'm Rockabilly.

    Default Ah, I get it.

    Thanks Frank, that's improved my comprehension.
    Johnny Dodgem.

    Cartridges vintage MMs including Pickering xsv-4000/xsv-3000 : Stanton 881s/D81 : AT140LC/VMN40ML
    Spinners hot rod 1210 (Jelco 750D, Origami, Ammonite, Longdog, Vantage, Achromats) : Pye G63 & Garrard AT6 : Two full custom Lencos : Kenwood KD-650D
    Streaming Qobuz : BluOS & Node2 (Fidelity Audio modified) : RME ADI-2 DAC
    Pre-amps Tron Seven (GT modified) : Conrad Johnson EV1 : Croft Micro 25 : Decware ZStage
    Power Amps PrimaLuna ProLogue 5 (KT120) : PrimaLuna ProLogue 4 (KT77)
    Speakers The Edingdale : Meadowlark Hot Rod Shearwater

  3. #23
    Join Date: Mar 2010

    Location: Cardiff

    Posts: 390
    I'm Rockabilly.

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    Johnny Dodgem.

    Cartridges vintage MMs including Pickering xsv-4000/xsv-3000 : Stanton 881s/D81 : AT140LC/VMN40ML
    Spinners hot rod 1210 (Jelco 750D, Origami, Ammonite, Longdog, Vantage, Achromats) : Pye G63 & Garrard AT6 : Two full custom Lencos : Kenwood KD-650D
    Streaming Qobuz : BluOS & Node2 (Fidelity Audio modified) : RME ADI-2 DAC
    Pre-amps Tron Seven (GT modified) : Conrad Johnson EV1 : Croft Micro 25 : Decware ZStage
    Power Amps PrimaLuna ProLogue 5 (KT120) : PrimaLuna ProLogue 4 (KT77)
    Speakers The Edingdale : Meadowlark Hot Rod Shearwater

  4. #24
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 4,528
    I'm Lawrence.

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    Quote Originally Posted by camtwister View Post
    .
    I've experienced comb filtering in the bass when operating PA systems in the open air, with multiple driver arrays, at listening distances that are significant with respect to wavelength.)
    Where was that, Glastonbury?

    Sent from my BKL-L09 using Tapatalk

  5. #25
    Join Date: Mar 2010

    Location: Cardiff

    Posts: 390
    I'm Rockabilly.

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    Nope, not Glastonbury.
    One of the most memorable text book examples of it was at the Sonoria Festival in Parco Aquatica, Milan.

  6. #26
    Join Date: Nov 2011

    Location: wirral

    Posts: 231
    I'm frank.

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    That animation is neat, I found this online too https://www.sciencelearn.org.nz/reso...e-interference

  7. #27
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 4,528
    I'm Lawrence.

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    Quote Originally Posted by camtwister View Post
    Nope, not Glastonbury.
    One of the most memorable text book examples of it was at the Sonoria Festival in Parco Aquatica, Milan.
    Nice, hope you got to enjoy the show

    Sent from my BKL-L09 using Tapatalk

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