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Thread: JBL 250Ti port tube length?

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    JBL 250Ti port tube length?

    Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!

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    Quote Originally Posted by slowpat View Post
    Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!
    I just measured the port on mine 250Ti LE: 5" long and 4" in dia.

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    Quote Originally Posted by JBL_620 View Post
    I just measured the port on mine 250Ti LE: 5" long and 4" in dia.
    Great! thanks for getting the measurement...

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    On my 250 ti classic edition the port has a smaller dia inside the speaker. It's only 3,8" in dia and the other side of the port is 4" in dia. and yes it's 5" long.

    /Torbjörn

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    Quote Originally Posted by topr View Post
    On my 250 ti classic edition the port has a smaller dia inside the speaker. It's only 3,8" in dia and the other side of the port is 4" in dia. and yes it's 5" long.

    /Torbjörn
    I measured 3.9" on the inner end. I think this is to make it easier to insert the tube. just my two cents.

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    Unabashed Speakerholic cosmos's Avatar
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    Port length

    On my 250Ti-LE I played with a lower tuning frequency (longer ports) and liked the change.. You might give it a try..

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    what length did you end up?

    Mark
    Think center channel for 250TIs; (2) 108s, a 104 and a 44ti, now what?

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    Senior Member DavidF's Avatar
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    Quote Originally Posted by slowpat View Post
    Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!
    The volumes are mentioned elsewhere, just have to work through some searches. Strictly from memory the 250Ti is 4.2 cf and the 240Ti is 3.4 but you may want to check my numbers.
    David F
    San Jose

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    And they both use the same ducted port, hence the 240Ti system is tuned a bit higher.

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    Quote Originally Posted by 4313B View Post
    And they both use the same ducted port, hence the 240Ti system is tuned a bit higher.
    Makes sense. Thanks! Seems like the port tube in my L100T3's have the same dimension. But I will just cannibalize the port tube from the Harman Kardon Citation subwoofer box which uses the LE14H-1.

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