Couple plate and front firing

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Bill Fitzmaurice
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Re: Couple plate and front firing

#16 Post by Bill Fitzmaurice » Thu Oct 03, 2019 9:31 pm

They have an effect down to the frequency where the total length of the horn plus the plate equals 1/4 wavelength. Horn length determines how low the horn loading extends, mouth area determines how low flat response extends.

Droogne
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Re: Couple plate and front firing

#17 Post by Droogne » Mon Oct 07, 2019 5:10 pm

    Bill Fitzmaurice wrote:
    Thu Oct 03, 2019 9:31 pm
    They have an effect down to the frequency where the total length of the horn plus the plate equals 1/4 wavelength. Horn length determines how low the horn loading extends, mouth area determines how low flat response extends.
    I guess cornerloading in room theoreticaly needs the same 1/4th wavelength requirements?

    what about the mouth area? Cant find the formula.. Is there a simple rule of thub to estimate how big the horn needs to be to support a flat response down to a certain frequency?

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    Bill Fitzmaurice
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    Re: Couple plate and front firing

    #18 Post by Bill Fitzmaurice » Mon Oct 07, 2019 5:32 pm

    Corner loading is totally different. Google 'loudspeaker spatial loading'. A perfect horn would have a mouth perimeter of one wavelength.

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