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Thread: JBL L100: port frequency needed

  1. #1
    Junior Member
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    JBL L100: port frequency needed

    Hi,

    Does anybody know (had measured) the port frequency in original JBL L100 monitors boxes?

    Thanks,

    Alexander

  2. #2
    Senior Member GordonW's Avatar
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    An original L100 (with the LE20 tweeter), has a 2" diameter vent in the front baffle, with no tube (1" vent length, due to the 1" thick baffle). This gave a tuning frequency of right at 41 Hz.

    The L100A (with the LE25 tweeter, and the "elbowed" vent tube) had a vent frequency of right at 31 Hz.

    Regards,
    Gordon.
    This Is Gordon's Page: www.geocities.com/gordonwaters

  3. #3
    Junior Member
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    Thank You, Gordon. This is what I needed.

    Alexander

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