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  • porting question

    Just a curious question..

    What's the difference between slot porting like the MFW vs. a transmission line?
    Never Argue With An idiot. They'll Lower You To Their Level And Then Beat You With Experience!

  • #2
    Jason, a ported/vented/bass reflex enclosure is a Helmholtz resonator that acts primarily via interaction between the air volume in the cabinet and the mass of air in the port. A transmission line acts as a tuned, damped, resonant pipe tuned primarily by the length of the pipe. Either one can exit in a round or rectangular port, and either one can take on characteristics of the other. In subwoofer use, a bass relex port rarely exceeds 30" in length, and a transmission line rarely is shorter than 36".

    For more and better explanations, read about Ported Sytems and Transmision Lines here:
    http://www.diysubwoofers.org/
    http://en.wikipedia.org/wiki/Bass_reflex_enclosure
    http://en.wikipedia.org/wiki/Loudspe...nsmission_line

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