Question about Logitech X-230 Computer Speakers

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Sub woofer making a screaching loud noise when powered on

About two seconds after powering on speakers, the sub woofer makes a loud noise that sounds like the emergency broadcast service??

Posted by teameaf02 on

  • Anonymous Dec 11, 2008

    have same problem wheather plugged into a surge protector or not.. and previously when plugged into the same electrical outlet did not squeal. First time it happened was when they were left on but not plugged into the computer or other device.. and in the middle of the night it began the "scream".. now you can hear it in the background coming from the sub woofer even before the speakers are turned on.

  • Anonymous Apr 20, 2009

    No matter where they are plugged in. A few seconds after power up they make a very loud high piched noise, sounds like the noise you'd get if you had feedback through a microphone. the sounds does not vary with either volume control.

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The pop from other electrical items makes me think it's a ground problem but I am do not have a clue as to what type of setup you are running over there. Did you try a surge protector?Is it 110volts with a seperate ground wire?
Have you tried running a UPS?

Posted on Sep 26, 2008

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How to hookup

hi,
if u want to hook up the sub with ur av receiver the connect the sub woofer output of ur AVR to any one (left or right) input of ur sub woofer. then connect its power . set the frequency range between 90 and 120Hz. set the volume of sub woofer to 40% of its total. also check the av receives speaker setting. goto speaker setup and make ON the sub woofer out.

if want to connect the sub to a stereo amp without sub out. then connect the amps speaker line to the speaker input of sub woofer and connect the speaker out of sub to left and right speaker ( make sure to connect the red to red and black to black). set the volume and frequency as above
ok
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I hope I have explained this in a manner you will understand easy, if not just post whatever questions you may have right on this thread and I will get back to you as soon as possible.

It would also be appreciated if you could rate this solution if you no longer need any help from me. If you do require more help, please wait to rate this until we are finished. That way I do not get an undeserved bad rating when we have not even finished our communications.
By the way, A "Thanks for trying" and "Helpful" rating are really not good, they always end up lowering my overall score.

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