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Thread: PL 4000 joystick

  1. #11
    Forum Veteran WOPL Sniffer's Avatar
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    Screw it
    That was a reference to the Wizard of Oz when the group got into the castle and the old guy was pulling handles and blowing shit up
    I had the nations problems figured out one night while on blah blah blah........ huh?

    Big amps
    Kenner Close N Play

  2. #12
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    Why are there are 4 pots on the joystick but only 2 are connected . All four wipers are connected and the terminals of 2 of the pots only. It only shows the two connected pots on the schematic I have.

  3. #13
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    Screw it
    I have not delved into the skizmo as of this moment but usually, 1 pot for left and right, and 1 pot for front to back.
    I had the nations problems figured out one night while on blah blah blah........ huh?

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    Kenner Close N Play

  4. #14
    Forum Veteran marcok's Avatar
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    I'm very curious about any tech item
    Perry,
    Calman 46 quoted " this is my first PL 4000 "
    so I wrote soon : Replace all rear connectors !
    It' s well known that they are a plague .
    I wanted to help him to avoid problems ,
    after my experience on PL 4000/ PL1000.
    Ciao
    Marco

  5. #15
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    Screw it
    I'm just sayin, if a guy asks what kind of motor oil I use, I don't tell him how to rebuild the carburetor.....



    HUH????
    I had the nations problems figured out one night while on blah blah blah........ huh?

    Big amps
    Kenner Close N Play

  6. #16
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    I am putting my PL 4000 back together (first PL 4000) . New caps , re-flowed solder everywhere ,new rear panel jacks . I asked this before , the joystick has four pots but only two are wired. All 4 wipers turn but only two of 4 pots are wired . Why is this ?
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  7. #17
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    Halfbiass...Electron Herder and Backass Woof
    Its a two way joystick, onlyneed two pots...
    taking something that's already good, and making it better...........and for the knowing smiles that cross their faces.......Nando-2011...

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  8. #18
    Forum Veteran marcok's Avatar
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    http://thecarversite.com/manuals/man...e%20manual.pdf
    On page 9 you'll find the interconnection diagram .( bottom right )
    I hope it will help you .
    Why 4 instead of 2 ?
    My opinion is that Carver used a RC plane joystick built with 4 pots .
    Ciao
    Marco

  9. #19
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    So by 2 way ,left & right ? Can the PL 4000 be used as 4 channel preamp ? That's what I thought the 2 used pots were for . I need to read the owners manual and hook this up . I do have a WOPL 400 for it . But I need to test it first . Thanks for the replies guys

  10. #20
    Forum Veteran marcok's Avatar
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    As you can see the shaft pots are mechanically connected via a blade with a slot ;
    so when you move the joystick you can obtain all balance combination .
    Why four channels?
    This preamp has been designed with SQ decoder and infact the joystick has been located
    between SQ decoder and output stage board ( called logic board ) .
    In case you want use this preamp in 2 channels mode simply engage 2 CH on front panel .
    In case you want use this preamp in 4 channels mode you must add an other power amp
    and two speakers . It's a good solution to have an ambience effect also with normal stereo sources .
    Power amp and speakers can be very cheap . It works very well .
    To test this unit it's necessary to have a sine wave generator ( a CD test disc ) and a cassette recorder,
    using VUs as an ac voltmeter .
    Start testing with only 2 boards : tone board and logic board and disengage all special function on
    front panel .
    Ciao
    Marco

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