WinIsd

Discussion in 'Archived Threads 2001-2004' started by RodneyDavis, Apr 6, 2002.

  1. RodneyDavis

    RodneyDavis Auditioning

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    Hi All. Does anyone know if the optimum outer box dimensions in WinIsd already have the port volume figured in or not?
     
  2. James Mudler

    James Mudler Stunt Coordinator

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    Welcome,

    Measure the internal dimensions then multiply togther. Divide by 1728 and if your cuft is greater than the one your are measuring in WinISD- then yes, if it is the same - then no. I do not have my laptop with me or I could answer yes or no.

    Hope it helps
     
  3. RodneyDavis

    RodneyDavis Auditioning

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    Your reply makes me feel a little like an idiot, but yes, it sure did help!

    Thanx.
     
  4. James Mudler

    James Mudler Stunt Coordinator

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    No such thing as a dumb question. I am surprised I thought of it [​IMG]
     
  5. Chris_Freeman

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    Sorry to jump in so late, but I tried and it does not account for the port volume.
     
  6. RodneyDavis

    RodneyDavis Auditioning

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    NP Chris... we all have a life, right? My new calcs with the port volume, stuffing, driver and bracing adds another 99% for the EBS allignment I'm modeling. Doesn't that seem a bit much? I have a Stryke SAL-PB12 driver that packs a walloping 176 litre Vas. That may be the reason, but it still seems like a huge box. If this comes out right WinISD shows me a bass shelf that's only 3 dB down between 24 and 35 Hz. I'm using a single 6" diameter port tuned to 19.5 Hz; Vb shows 5.6 cubic meters but my final volume is over 11 cubic meters.
     
  7. Adam O

    Adam O Stunt Coordinator

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    11 cumbic meters?

    Rodney thats big..

    Adam
     
  8. ThomasW

    ThomasW Cinematographer

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    None of the box design programs account for 'items' inside the box. They all compute 'net' internal volume. It's up to the builder to compensate for the displacement of the driver, port, internal bracing, etc.
     
  9. RodneyDavis

    RodneyDavis Auditioning

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    Oops.. that should have read cubic feet... my bad!
     

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