Question about Logitech X-220 Computer Speakers

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Feedback? when the volume on the sub is turned up enough i get a constant noise from it. im pretty sure its feedback, but i have tried moving the sub around and i get the same problem. feedback is the only thing i can think of that is making this noise though, how do i stop it

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  • philar1012 Oct 22, 2008

    its was the mics playback volume, nevermind

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Are these speakers that you have to plug up into a wall outlet. If so, the noise you here is the electricity flowing through the speakers as sound is made. If you turn the sound down on the sub and turn it up on what you are trying to listen to, then you can reduce the backround noise.

Posted on Oct 22, 2008

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I assume you are using XP. Try these steps.
1. Open 'Sound and Audio devices' in Control Panel.
2. Select 'Advanced...' button near bottom. b2053f1.jpg

3. Select 5.1 system 972ed04.jpg

4. Start playing a sound.
5. Set the volume control of the subwoofer to the middle position.
6. Open volume control and adjust Master volume to a comfortable level (i.e. until there is no hum).
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Also make sure you haven't muted any sound device except microphone. I think your problem is you have set it to the maximum level. So decrease it.
7. Mute the sound and check.
Good luck! Let us know the result.






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Hi,

Offhand, could either be the subwoofer speaker itself or the electronics (amp and/or crossover). One way to determine is by physcially checking the sub speaker. When playing with bass on, pls try restricting speaker movement by pressing on it and see if the noise is reduced. Another is to temporarily replace the speaker. You can try speakers meant for the car, home entertainment or book shelf, just dont set the volume too high.

If the speakers are ruled out, then it would be the electronics inside. For this, you would need familiairty with electronic components and circuittry, a DVM and a soldering iron. Access to an oscilloscope and an audio signal generator would be nice but not a necessity. The idea is to inject a constant audio signal and determine where the noise (if electronic) is coming from. In most instances, it would be a leaky electrolytic capacitor either in the input stage or feedback loop. At other times, it would be also a capacitor in the band pass filter.

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hi wfj1310,
that feedback comes from the distance between the mic and the speakers only. Low the record level from the mic and make the distance bigger.

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