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Thread: 250ti "classic edition", "limited edition"

  1. #1
    Senior Member Guido's Avatar
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    250ti "classic edition", "limited edition"

    As a proud owner of 2 beautiful mintmintmint 250ti "classic edition" I thought I should check the networks if they are REAL 250ti BQ networks as I had some doubts.

    First of all according to my manual the "classic edition" and the "limited edition" are identical. Except maybe one was sold in USA (limited) and one in Europe (classic).

    The network thing is strange. All values seem to be according the 250ti BQ BUT:
    a) the 0.005 polypropylen bypass caps are missing
    b) the C1, C5 (33uF!), C7 are electrolytic
    c) the C3 is 24uF electrolytic + 16uF MKP (Solen)
    All other Caps are Solen MKP

    The networks are made in Taiwan and the work is of lousy quality, which not neccessarily depends on each other
    I need to reglue all coils as they are loose.

    The tweeters are 035TiA-2 which seem to be 035TiA-1 with golden laminated dome.

    All in all it looks like another stroke of the peacounters!
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  2. #2
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    Jbl 250ti superior hi fi cabinet

    State of the art JBL 250TI SUPERIOR HI FI CABINET
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  3. #3
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    Jbl 250ti superior hi fi cabinet

    Jbl 250ti superior hi fi cabinet
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  4. #4
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    250ti Classic Crossover Upgrade

    Quote Originally Posted by Guido View Post
    As a proud owner of 2 beautiful mintmintmint 250ti "classic edition" I thought I should check the networks if they are REAL 250ti BQ networks as I had some doubts.

    First of all according to my manual the "classic edition" and the "limited edition" are identical. Except maybe one was sold in USA (limited) and one in Europe (classic).

    The network thing is strange. All values seem to be according the 250ti BQ BUT:
    a) the 0.005 polypropylen bypass caps are missing
    b) the C1, C5 (33uF!), C7 are electrolytic
    c) the C3 is 24uF electrolytic + 16uF MKP (Solen)
    All other Caps are Solen MKP

    The networks are made in Taiwan and the work is of lousy quality, which not neccessarily depends on each other
    I need to reglue all coils as they are loose.

    The tweeters are 035TiA-2 which seem to be 035TiA-1 with golden laminated dome.

    All in all it looks like another stroke of the peacounters!
    Hi,
    Thanks for the analysis above. It does seem that we have the same speakers as each other (assuming that you still have yours...mine only reached me a few weeks ago).
    So far I am impressed with the sound...apart from some high sharpness and perhaps some bass boom (compared to my 989s!). One question I do have is concerning working on the crossover. If I want to replace just the electrolytic caps with modern versions, is the crossover accessible via the rear panel for this work, or via the bass speaker aperture? It is quite unclear from the various documents that are around. It is my impression that the Classic crossover is more compact than many of the others. I haven't found any guidance on this so far.
    Also, it looks like the foam in the tweeter has disintegrated...did you replace yours and was it very sensitive to the type of foam?

    Thanks for the help in this. I hope my questions are not too late and that you haven't moved on.
    All the best

    George

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