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  1. Replies
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    Phil, Glad to hear that your symptoms are...

    Phil,

    Glad to hear that your symptoms are mild.

    :)
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    Here's the User Guide...

    Here's the User Guide

    ( You'll need to register to execute the download > OTOH, one can simply read it > there's not a lot of info in the guide. )

    :)
  3. Contact RobH3606. I notice that he has added...

    Contact RobH3606.

    I notice that he has added some info since Techbots departure.

    :)
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    Hi, Assuming that you switched the existing...

    Hi,

    Assuming that you switched the existing passive crossover to "BiAmp" from "Passive" ( accomplished on the hidden 2-way switch found behind a removeable plate ) and also removed the strapping...
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    If you do get convinced that you want to use 16...

    If you do get convinced that you want to use 16 ohm Le14a(s) and believe you have found a pair to purchase >> make sure you that the seller first provides you with DCR measurements of the voice-coils...
  6. Thread: 4344 cabs

    by Earl K
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    Wow! I love seeing these pro efforts. ...

    Wow!

    I love seeing these pro efforts.

    Lovely Work!

    :)
  7. More Info to read ( with links) from an older...

    More Info to read ( with links) from an older thread

    ( Picked up by scanning/reading the bottom of this very page where the page has a category showing "Similar Threads" ( a very handy feature of...
  8. I always liked those amps. I remember them...

    I always liked those amps.

    I remember them populating many a Cdn disco space back in the mid to late 70's.

    I can understand your desire to get it fixed.

    Hopefully someone knows of a place...
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    XSim download ( .exe ) ...

    XSim download ( .exe ) will do the simulation ( and yes, its freeware ).

    :)
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    Just rebuild the existing networks into the 8330...

    Just rebuild the existing networks into the 8330 standard ( you do, after-all, have the requisite information to do so ).

    :)
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    dub, I'm really glad to hear that you've...

    dub,

    I'm really glad to hear that you've achieved a measure of success by copying the functionality of the 4410 network.

    Phil has so many JBL systems that I wouldn't expect him to also pursue...
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    Weird, We don't know what speakers the OP...

    Weird,

    We don't know what speakers the OP actually owns and what he's trying to accomplish with these modifications ( from the get-go, I assumed he had a pair of 4410's ). :dont-know:

    :blink:...
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    Yes, connect the replacement ( fixed ) Lpad in...

    Yes, connect the replacement ( fixed ) Lpad in the same arrangement as R2 / R3 .

    The variable LPads are 8 ohm types // so yes, you can use online calculators to get the substitute resistor values....
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    Grounding an Lpad??​ GOOGLE How to Wire an...

    Grounding an Lpad??​ GOOGLE How to Wire an Lpad


    Don't try to combine//meld the functions of the fixed pad ( R2 + R3 in the mid section ) with the function of its variable Lpad.

    Merging...
  15. Replies
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    GOOGLE Replace Lpad with fixed resistors...

    GOOGLE Replace Lpad with fixed resistors

    :)
  16. Replies
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    That's another misconception of yours that needs...

    That's another misconception of yours that needs to be put to rest >> the schematic is quite clear as to the internal wiring.

    If you follow the wiring layout of the schematics > when you touch...
  17. Replies
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    Thanks! You're confusion results from; The...

    Thanks!

    You're confusion results from;

    The whole "Black = Positive" applies only to the drivers ( Legacy ) not the connectors found on the back of speaker boxes .

    :)
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    Amazing, ( the persistence of this Cognitive...

    Amazing, ( the persistence of this Cognitive Disconnect ).

    Once someone has been told that the "+" terminal of a driver is the Black button, why would they persist in treating it like it's the...
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    From Giskards ( 4313B's ) L300, 4333 "BandPass"...

    From Giskards ( 4313B's ) L300, 4333 "BandPass" equivalent thread.

    Here's his equivalent circuit.

    http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=74&stc=1&d=1052963079
    ...
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    I'd truly love to know how both of you ( Paul001...

    I'd truly love to know how both of you ( Paul001 + Riley Casey ) wrongly arrive at your wiring convention conclusions ( given the pdf instructions were previously posted by LHF member "Odd" ) .
    ...
  21. Thread: Urei 803 recone

    by Earl K
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    526

    That center part is called a "Spider" . It's a...

    That center part is called a "Spider" .

    It's a readily available part from any reconer ( who'll sell individual parts ).

    Get the dimensions of it ( overall outside diameter as well as the size...
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    There's no pic here at LHF ( that I know of )...

    There's no pic here at LHF ( that I know of ) that shows how to hardwire the switch ( into the input mode of your choice >> & BTW once you add the necessary 6 wires one is stuck with the choice of...
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    http://www.audioheritage.org/vbulletin/attachment....

    http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=89829&stc=1&d=1635652772

    By far the simplest approach is to bundle the mess off to someone who actually recognizes what they are...
  24. Mazza, I would simply follow GordonW's lead...

    Mazza,

    I would simply follow GordonW's lead and use 30 minute, 2-part Epoxy for that magnet repair.

    GordonW over at AudioKArma

    I'm thinking that you might also want to put a thin coating of...
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    Some regulars might not even see this thread >...

    Some regulars might not even see this thread > since it's so misplaced and visually buried down in the roll-call .

    Normally when one owns the actual part needing a spec ( like the 2.6mH coil in...
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