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  1. #1

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    Default sonotube sub help

    Trying to build my first sub and am running into some problems. I downloaded winisd and it isn't very hard to use. It is however annoying to have to translate from meters to inches. Is there a version that does estimates in inches? I am going to use a extra sub from my car a polk audio db 124 it really doesn't seem to model very bad -3db at 18 hz. I need a 126.9L inclosure and i would like to try a sonotube sub because it seems cheap and easy. If the performance is good than i will probably make a box and make it look good. I need to know what size sonotube and how long i will need? :D

    thanks,
    derek murray

  2. #2

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    In winISD you can just click on the meters or whatever unit of measure it is using and it will switch from one to the other.

    Here is nice little tool for cutting your sonotube to the right length.

    http://www.quux.net/roo/diy/sonosub/sonocalc.html
    Sony KDL-40V2500 HDTV, Rotel RSX-1067 Receiver, Sony BDP-S550 Blu-ray, Slim Devices Squeezebox, Polk RTi6, CSi3 & R15, DIY sub with Atlas 15

  3. #3

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    Another trick that comes in handy:
    google will convert most units- just run a search like:
    126.9 liters in cubic inches
    and it'll return the result
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i

  4. #4

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    Dump WinISD. Try the FRD tool Unibox. I have designed a few enclosures with it and then tested them. They were accurate to within 1 Hz of the desired tuning frequency.

    http://www.pvconsultants.com/audio/frdgroup.htm

  5. #5

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    Quote Originally Posted by gatemplin
    Dump WinISD. Try the FRD tool Unibox. I have designed a few enclosures with it and then tested them. They were accurate to within 1 Hz of the desired tuning frequency.

    http://www.pvconsultants.com/audio/frdgroup.htm
    I agree. I like to use WinISD pro to look at multiple alignments, and then when I choose one I go to Unibox for fine "tuning" (pun intended)
    Sony KDL-40V2500 HDTV, Rotel RSX-1067 Receiver, Sony BDP-S550 Blu-ray, Slim Devices Squeezebox, Polk RTi6, CSi3 & R15, DIY sub with Atlas 15

  6. #6

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    Quote Originally Posted by tryrrthg
    I go to Unibox for fine "tuning" (pun intended)
    Well done my friend. :p

  7. #7

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    is there anyone who can help me work through the unibox program. it is completely over my head.

  8. #8

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    What are you having a problem with?

    If you dont know the terms and acronyms mean you might want to pick up a speaker design book.

    If you have specific questions I can try to help.
    Graham

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