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Yet Another L100 Crossover Thread

Discussion in 'The Lansing Legacy' started by Zonker92, Sep 8, 2018.

  1. Zonker92

    Zonker92 All shiny and chrome Subscriber

    Messages:
    7,169
    Location:
    Central CA
    Ignoring for purposes of this discussion any aftermarket approaches, such as the Murphy or Gravesen design:

    As between the two OEM crossover schematics posted below (early, vertical layout above, which had the LE20 tweeter) which might be preferable, and why?

    I ask because I’m about to redo the crossovers in mine (later version) and I kind of want to stick to one of the original approaches, for an original(ish) sound, warts and all.

    Thanks!


    962A1709-8B79-48AC-8514-3E4D3FAF7849.jpeg 18678B81-4F47-4622-8E4C-F5EC55F84ED7.jpeg
     
    Last edited: Sep 9, 2018

     

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  2. EarlK

    EarlK Well-Known Member

    Messages:
    521
    Location:
    Richmond Hill, Ont.
    If building from scratch you owe it to yourself to first hear this version ( gotta love simple & cheap! ).

    [​IMG]

    Rarely mentioned ( apart from it's infamous lumpy FR response ) is how coherent sounding that simplistic network can be ( a result < IME > of all 3 drivers using the same polarity and the gentle crossover slopes employed ).

    No doubt the massive presence peak ( at 6K ? ) will eventually drive you nuts > though I would first try mitigating it with an LCR notch strapped across the Le5-2 (s) terminals ( before trying a completely different network ).

    :)
     
  3. Zonker92

    Zonker92 All shiny and chrome Subscriber

    Messages:
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    Location:
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    Thanks, Earl!
     
  4. L-82

    L-82 AK Subscriber Subscriber

    Messages:
    911
    Location:
    Montreal, Canada
    Nice I’ll keep an eye on this thread...
     
  5. Zonker92

    Zonker92 All shiny and chrome Subscriber

    Messages:
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    Location:
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    I posted this query here and in the JBL group on Facebook, and no one seem to have a real answer for me. I wound up just buying better caps for the stock crossovers.Mine are the simpler version above.
     
  6. L-82

    L-82 AK Subscriber Subscriber

    Messages:
    911
    Location:
    Montreal, Canada
    I’m thinking of going the same route, I’ll wait for your impressions since I really like the way the 100s sound...
     

     

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  7. wallacefl

    wallacefl AK Subscriber Subscriber

    Messages:
    335
    I would recommend doing the crossover ...JBL S70 Alpha III which used those drivers but wisely crossed over the woofer. I acknowledge it is not pure 100 but the resultant midrange clarity should be better.
     
    Zonker92 likes this.
  8. L-82

    L-82 AK Subscriber Subscriber

    Messages:
    911
    Location:
    Montreal, Canada
    8ECF19CC-B893-473F-A263-AB0D74F282AC.jpeg C25F2ADD-9540-47A6-9FFE-6DF55D993246.jpeg I opened up my L100 - just to reject a peak.. looks like they were recapped, take a look, not sure what they are but I’ll do a more thorough investigation in the futur. For now I plugged the ports from the inside, better bass control
     

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