Question about Labtec Pulse 420 Computer Speakers

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Hello! I need some help with Labtec Pulse 420 Computer Speakers. My problem is next: I can't plug the speakers in my PC. I mean, when I do it, the speakers sounds too quiet and there's no chance to volume up and use the subwoofer - it's starting to roar and whistle VERY loud. Could you demonstrate or give any link to site with the manual? Maybe, it's all about plugging the wrong wire (there's 3 kind of it - two greens and one yellow).Thank you for the attention. Sorry, if my description is not very clear. Waiting for your answer!

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  • Labtec Master
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Try Googling (labtec)(420)(manual) without parens to get instructions.

Posted on May 08, 2017

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Posted on Jan 02, 2017

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SOURCE: labtec speakers want play

check whether the output plug is connected properly or not.... if it is then check out whether the adapter is giving the power output.... if it is then the speakers are spoilt otherwise u can just replace the adapter...

Posted on Feb 08, 2009

  • 241 Answers

SOURCE: wiring internal board of labtec computer speakers

The shielded wires are for ground, so they get connected together. Plug the wire into the PC and run some music. Then touch each wire to the others. You only have a couple of combinations to try...red-to-green and white-to-yellow, or red-to-yellow and white-to-green, . You can do this while the PC is one and music playing until you get sound thru the speakers. There virtually no current running thru the wires and you can't hurt the PC by doing this.
If the speakers use an external power supply, have it plugged in and working when trying these connection options.

Posted on Sep 07, 2009

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1 Answer

Do I need a windows 7 driver for these speakers? If so where can I find one free?


Control panel hardware and sound, sound and make sure that the speakers you want to use are checked

Feb 29, 2016 | Labtec Pulse 385 Computer Speakers

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With my speakers all i have to do useually is plug them in and away i go, but now for some reasonm there not working and not showing up in my controll panell as even beein plugged in, but they will work...


the drivers might have been corrupted by something foreign or you might have got a virus run your antivrus program and test for a virus then
yellow? means you need to install/update driver right click to install driver
as for the sound
control panel sounds and audio,volume you can adjust the volume or advanced,speakers select appropriate speakers or audio you will find 3 drop down lists make sure you have selected the right speakers or control panel,administrive tools,computer management,device manager scroll to sound,video and game cotrollers could be a yellow question mark? right click to re-install drivers
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hello vivian10

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Happy new year :)

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1st: make sure it is plugged into a wall socket correctly , to gain sufficient amount of power.
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1 Answer

Speakers conection


Yes, as long as you can plug it in, it will work.

If you have any more questions, please feel free to ask.


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Dec 19, 2008 | Labtec Pulse 285 Computer Speakers

1 Answer

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