My subwoofer hums when turn on with green light, WHY?

Can you help

Answers

  • SeleniumFalcon
    SeleniumFalcon Posts: 3,742
    Hello,
    Which model subwoofer do you have?
  • LKTRNX
    LKTRNX Posts: 3
    Does your sub hum when the green light is on with no input connection? If you only experience hum with the signal cable plugged in from your preamp/receiver/etc, chances are the source may have an earth-grounded component. It is always a good idea when dealing with hum to remove any input cables to the sub. Respectfully I would perform the following tests:
    • Remove all wires going into the subwoofer that come from your preamp/receiver/amplifier.
    • Power-on the subwoofer.
    • If you hear hum with nothing connected to the sub, the fault lies inside the sub.
    • If you don't hear hum with nothing connected, the sub is not at fault.
    • If you don't hear hum at this point, power down the sub.
    • Connect the rca jack or speaker inputs to the sub and power it up.
    • If you hear hum at this point, you most-likely have a component in your main audio system that has an earth ground.
    • Good Luck!