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Help with potentiometer.

Discussion in 'Datasheets, Manuals and Component Identification' started by HellasTechn, Feb 28, 2015.

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  1. HellasTechn

    HellasTechn

    1,559
    215
    Apr 14, 2013
    Dear friends.

    I need to replace the volume potentiometer on a DENON PMA-280 audio amplifier.

    The old one is an ALPS 4 pin 30kbx2.

    I cant find the same one. Any ideas ?

    Could i use a normal 30k double potentiometer ? but then again what is pin 4 used for ?

    Here is how it looks like from inside.

    THANK YOU !!!!
     

    Attached Files:

  2. Arouse1973

    Arouse1973 Adam

    5,177
    1,093
    Dec 18, 2013
    Not sure what the fourth pin is for. It might be bass boost or something like that. Make sure the POT is a log type also. I would have thought you could find a replacment. Got any pics?
    Adam
     
  3. Frenoy Osburn

    Frenoy Osburn

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    Nov 20, 2014
  4. HellasTechn

    HellasTechn

    1,559
    215
    Apr 14, 2013
    I am thinking of useing a 2x30k potentiometer and 2 15k resistors connected to pin 1 and 2 one side and pin 4 other side. maybe that would work.
     
  5. HellasTechn

    HellasTechn

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    215
    Apr 14, 2013

    How would you suggest that i could do that ?
     
  6. HellasTechn

    HellasTechn

    1,559
    215
    Apr 14, 2013
    Note that i fould 47K and 22K potentiometers....

    I guess the 47K would be better ?

    I even tried soldering a 4th pin on the resistive plate but no luck it can not be soldered
     
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