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Thread: 4355 Help: Dimensions, etc..

  1. #1
    Join Date
    Apr 2003
    NW Montana

    Question 4355 Help: Dimensions, etc..

    Would appreciate any help providing internal dimensions for the 4355 monitor, especially for the doghouse. I've been all over this site to no avail - if they are here I'm blind. Thanks in advance.
    Last edited by geowal3; 03-15-2005 at 06:04 PM. Reason: spelling

  2. #2
    Administrator Mr. Widget's Avatar
    Join Date
    Apr 2003
    San Francisco
    Here are some basic dimensions. Check your mail box as I've sent you a PM.
    All of the cabinet panels are 1" thick. This shows a center divider which I chose to add. The original did not have it. I also used 2 4" ports per woofer instead of larger bent tubes.

    For simplicity, this drawing does not show the several cubic feet of cross bracing that I added.

    Attached Images Attached Images  

  3. #3
    Senior Member
    Join Date
    Apr 2003
    Winnipeg Manitoba Canada
    Did JBL use baltic birch for the 4355??? I know for a fact that the 4350 used 3/4" baltic birch for the front baffle and assume for the rest of cabinet as well but even if they did not I would. The sub box for the 2202 was particule board.

  4. #4
    Senior Member duaneage's Avatar
    Join Date
    Jan 2005
    The First State
    Keep in mind that the box volume and port dimensions are dependent on the Inductors used in the crossover network. The lack of an inductor for the woofer (as in using active filters on the amp) will make the box smaller and the ducts longer. Using inductors that have higher resistance than normal will require a bigger box and shorter duct tubes.

    How much different? The Qts of the speaker will need to be calculated based on the DC resistance of the different inductor and then applied to the box calculation. Not using an inductor will require redoing the box dimensions only.

    If your not a perfectionist it may not matter, you may be able to stuff a little more or little less fibreglass into the enclosure to tune it. I like to determine the exact size as best I can.

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