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Thread: port position

  1. #1

    Default port position

    when putting a port in a box, which side should the port be located? the same side as the speaker, on top, other sides? right now it'll be in a hatchback car but it'll be moved to a car with a trunk later.

    might as well kill two questions with one post.. the port needs to be 3" diameter and 10.40" which tunes to 35hz.. is it possible to change the diameter to make the port length shorter? its going to be tough to fit a 10" port in a 1 cu ft box. how would i go about doing the calcs? thanks

  2. #2


    I seem to be asking some questions that are too tough or something.. (if they were retarded I'm sure I'd at least some positive feedback)Only 1 not-so-sure response from all 3 of my posts in all 3 message boards.. ha


    I'm good (and confused).

  3. #3

    Member Sales Rating: (0)

    Join Date
    Jun 2003
    the state of confusion


    it's purely discretionary... just don't put them on the bottom ;p

    i believe the rule of thumb for ports is to double the diameter of the port and that's the minimum distance you want to keep the port from the nearest surface... if you have a 3" port in the rear of the box facing the seat, you want the box 6" from the seat... hope that helps :D
    Hemi: (HEM -e) adj. Mopar in type, V8, hot tempered, native to the United States, carnivorous, eats primarily Mustangs, Camaros, and Corvettes. Also enjoys smoking a good import now and then to relax.

  4. #4

    Member Sales Rating: (0)

    Join Date
    Dec 2003


    the port should be located on the same plane as the sub to avoid cancalation issues...however...all vehicles are different and have different characteristics.....take the crx box for example....subs up ports great in that vehicle...but best bet is still same side as the sub;)

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