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Speaker hum

  • 10-05-2015 2:51pm
    #1
    eddie73
    Registered Users, Registered Users 2 Posts: 647 ✭✭✭


    Hi there,

    I own a roland keyboard amp (120w) that has served me very well over the years. Recently I have noticed a hum when there is a jack inserted into the input. the jack does not have to be attached to an instrument to hear this. When there is no jack connected, there is no hum. I was wondering what is causing this and how to rectify it.


Comments

  • #2
    Silversun
    Registered Users, Registered Users 2 Posts: 56 ✭✭Silversun


    The Jack your useing might be damaged, try using another one. Just sounds like a loose connection somewhere.


  • #3
    eddie73
    Registered Users, Registered Users 2 Posts: 647 ✭✭✭eddie73


    Silverson, thanks for your answer. I have tried numerous jack leads. I own more than a single one dont worry!.

    I have experimented with various power conditioners and di boxes.


  • #4
    Silversun
    Registered Users, Registered Users 2 Posts: 56 ✭✭Silversun


    eddie73 wrote: »
    Silverson, thanks for your answer. I have tried numerous jack leads. I own more than a single one dont worry!.

    I have experimented with various power conditioners and di boxes.

    Is the noise still there when an instrument is attached?
    I had a similar problem before and it was the input in the speaker had a loose connection, was just a matter of opening it up and re soldering.


  • #5
    eddie73
    Registered Users, Registered Users 2 Posts: 647 ✭✭✭eddie73


    Thanks for your replies silversun.

    The hum is still there when there is an instrument attached. The hum is there when there is only a jack lead attached and no instrument. I wanted to make sure that there was no issue with the keyboard, ( i experimented with different instruments anyway). The hum is not there when there is no jack in.

    It has multiple inputs, and the issue remains when I plug a jack into any of them.


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