Head Phone Jack Hum

[windozeuser]

Well, I have these cheap computer speakers:

120 Watt P.M.P.O
72mA Input Current
Frequency Response: 100Hz - 16KHz

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The speakers have a front headphone jack, but when I plug my headphones in it a loud humming noise results. I was wondering if I need a filter to reduce or completely cancel out the humming?

If so then could you help with the design, or should I just buy a better sound system?

Thanks!

 

[Russlk]

Sounds like a defect in the speakers, perhaps a missing or broken ground connection?

 

[Dr.EM]

I think considering the effort required to fix this getting a new sound system might be the better option. With 72ma input current I don't imagine they are too earth shattering anyhow :lol: . You can plug headphones straight into your soundcard in the meantime, that should work fine (in fact I find mine to be very quiet, even on full there is virtually no hissing).