I have a pair of creative 2.1 speakers, which developed some problem with the 3.5 mm pin. So I chopped it off, and soldered my own. Now, whenever there is a power loss, and the UPS picks up the slack, I hear static from the left speaker, and good audio, w/o static from the right. Decreasing the volume from the remote, decreases the volume, so the static can be clearly heard.

But, exchanging the Left/Right channel pins at the back of the sub-woofer, doesn't do the exact opposite. I mean, the sound and static does get exchanged between channels, but decreasing the volume on the remote down to zero, and you can hear some leakage audio from the right channel, which was'nt coming in thhe prev test config. Weird?

Have I improperly soldered the 3.5 mm jack? Are there different qualities/ratings for the same dimension audio jacks? I live in a semi-rural place, So, giving exact specifications wont help, because I wont be able to procure it, but worth a shot.


  • So, only when using the UPS, right? I guess that should go into the title then? – Arjan Dec 3 '10 at 9:19
  • Or is the UPS not powering the speakers? – Arjan Dec 3 '10 at 9:20
  • the UPS powers the speakers, but actually the UPS powers the entire house, not just the PC. I am guessing some voltage dip? – theTuxRacer Dec 3 '10 at 11:56
  • Any idea if the UPS somehow fully disconnects your connection with the main power lines? If so: then maybe you no longer have a proper ground/earth anymore. (Do you indeed use a power plug that has 2 pins for the mains power, and some additional pin for the ground? Still then, if the UPS powers the whole house, then I guess things are grounded somehow.) – Arjan Dec 3 '10 at 15:33
  • well, i do use a 2 pin plug for the speakers, the one that it came with. And the electrical wiring is properly grounded, because I dont feel any shocks, using the computer, or any other appliance. I guess the UPS gives a dirty voltage, because the TV makes a weird noise when turned on. – theTuxRacer Dec 3 '10 at 16:04

A common fault when soldering audio jacks is to apply too much heat to the screen, causing it to melt the insulation on the signal wires and partly or completely short one of the channels to earth. Recheck your soldering.

  • ok, ill check the soldering. – theTuxRacer Dec 3 '10 at 11:55

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