My PSW10 hums

gocard
gocard Posts: 19
edited March 2008 in Subwoofer Hookup & Bass Management
When I plug in the electrical outlet on my PSW10 subwoofer (with nothing else connected), I immediately notice a low hum. Even with the switch set to off. When I set it to on, the hum gets a little louder.

I only notice it when the room is silent, but it's kinda annoying.

What's the likely cause? Electrical noise over my lines? Or is it simply a bad sub?

Thanks.
Post edited by gocard on
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Comments

  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited March 2008
    Hello,
    In all likelihood what you are hearing is called, "transformer lamination" noise caused by the building and collapsing magnetic field around the sub-woofer's AC transformer. This can be fairly common and doesn't indicate any problems with the unit. In fact it will become less noticeable after a few months of use. Usually it is sufficiently low in level as to not be heard unless your room is very quiet.
    I hope this is helpful.
    Regards, Ken
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