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Thread: Replacing Binding Posts on 250Ti

  1. #16
    Senior Member SEAWOLF97's Avatar
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    Quote Originally Posted by rdgrimes View Post
    I'm not sure I agree with the "cheaply" part, especially if they are still working after all the years.
    The shorting bars are more likely to cause issues and need to be removed and cleaned periodically.
    >>"I'm not sure I agree with the "cheaply" part"
    +1

    I also made "shadow" shorting bars by tracing them on a copper sheet, cutting them out and "sandwiching" them under the stock bars. TO ME the bass improved a bit.

    to OP: worry more about the HF foam plugs.
    “If you think that’s the dumbest thing you’ve ever heard,
    just wait a couple minutes!”

  2. #17
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    Crossover upgrade was never in my sights to be honest...For me financially it would be a no-go but less than $500 or so to replace posts was within my budget...I have invested many thousands over the years in my system but left the speakers alone...BTW I have never touched the shorting bars (Is that a bad thing?)

  3. #18
    Senior Member rdgrimes's Avatar
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    Quote Originally Posted by bradster56 View Post
    BTW I have never touched the shorting bars (Is that a bad thing?)
    Remove them, clean them up on both sides with some steel wool and replace, snug them down.

  4. #19
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    Good idea...I'm gonna do that now

  5. #20
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    0000 steel wool did the job very nicely...

  6. #21
    Senior Member SEAWOLF97's Avatar
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    couple of years ago I bought an extra set of 250ti's. one had loose binding posts , you would turn
    the tightening knob and the whole thing would turn.

    I don't recall if the posts were soldered to the xover, but I did open them (remove LF driver first) and hold the posts stationary from the inside while turning them from the backside.
    (allen wrench through the wire insertion hole)

    have to do that maneuver with the cabs laying on their sides.
    “If you think that’s the dumbest thing you’ve ever heard,
    just wait a couple minutes!”

  7. #22
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    No loose binding posts yet...I want a pair of custom crossovers and WBT binding posts for under 1K

  8. #23
    Senior Member SEAWOLF97's Avatar
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    Quote Originally Posted by bradster56 View Post
    I want a pair of custom crossovers
    what issue are you trying to solve with the idea of custom crossovers ?

    IF it's the highs are somewhat harsh, there is a much easier solution and cost next to nothing.
    This has been addressed many times on this forum.

    Your HF's are old enough that I almost guarantee that the foam plug is rotted. A normal problem
    with 044's and 044Ti's.
    “If you think that’s the dumbest thing you’ve ever heard,
    just wait a couple minutes!”

  9. #24
    Administrator Robh3606's Avatar
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    No loose binding posts yet...I want a pair of custom crossovers and WBT binding posts for under 1K
    Whatever you do don't let some "custom" builder talk you into them. That is a complex crossover and is specifically tailored for that driver set. If you change the voltage drive you will essentially ruin them. If the guy builds from the original schematic fine but don't go with a "Oh I can do better than that" If the guy uses the original network and plots the voltage drives and any modifications match the original voltage drive then you would be OK.

    Rob
    "I could be arguing in my spare time"

  10. #25
    Member gmarascortt's Avatar
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    Quote Originally Posted by SEAWOLF97 View Post
    couple of years ago I bought an extra set of 250ti's. one had loose binding posts , you would turn
    the tightening knob and the whole thing would turn.

    I don't recall if the posts were soldered to the xover, but I did open them (remove LF driver first) and hold the posts stationary from the inside while turning them from the backside.
    (allen wrench through the wire insertion hole)

    have to do that maneuver with the cabs laying on their sides.

    All of my binding posts are loose and wobbling I just thought I would have to pull everything out to repair and/or replace. I purchased some copper Cardas posts about a year ago, but I have been fretting the task. So thanks for posting the much easier solution!
    250Ti, 18Ti, L77, L96, L112, L36, 4412, Control 29 AV, Altec: 1204B, 9849-8B, 511 Towers, 7 SeriesII

  11. #26
    Senior Member SEAWOLF97's Avatar
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    Quote Originally Posted by gmarascortt View Post
    250Ti, 18Ti
    from your tagline. I went the same route , picking up 18's as 044Ti insurance after buying the 250's. I didn't much care for their sound and they stay in their box (just, in case)

    BUT then, I found some 120Ti's, cheap. They are likely the most undervalued JBL 3 way, 12 incher.
    They've become my daily drivers, and IMHO the second best JBL 12 inch bookshelf (second only to the $5k Century Golds)

    I put a fair amount of time into restoring the 120's and it was worth every minute.
    “If you think that’s the dumbest thing you’ve ever heard,
    just wait a couple minutes!”

  12. #27
    Member gmarascortt's Avatar
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    Quote Originally Posted by SEAWOLF97 View Post
    from your tagline. I went the same route , picking up 18's as 044Ti insurance after buying the 250's. I didn't much care for their sound and they stay in their box (just, in case).


    I purchased those 18Ti's for $25.00 at a pawn shop in 1987. At the time, no consideration for the value and scarcity of the 044's. They were just thought of as my 250Ti's "little baby's" by my roommates in college!
    250Ti, 18Ti, L77, L96, L112, L36, 4412, Control 29 AV, Altec: 1204B, 9849-8B, 511 Towers, 7 SeriesII

  13. #28
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    Quote Originally Posted by SEAWOLF97 View Post
    what issue are you trying to solve with the idea of custom crossovers ?

    IF it's the highs are somewhat harsh, there is a much easier solution and cost next to nothing.
    This has been addressed many times on this forum.

    Your HF's are old enough that I almost guarantee that the foam plug is rotted. A normal problemwith 044's and 044Ti's.

    No problems with the tweeters...Nice clean extended highs...I was thinking an updated audiophile crossover would further improve the quality of sound...

  14. #29
    Senior Member Ian Mackenzie's Avatar
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    You are better off googling the question

    Jbl L250 charge coupled

    https://www.stereo.net.au/forums/top...tor-brigade-d/

    That is quite an insightful link of the whole topic. Interestingly it’s on Stero.net.au

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