TechSpot

Speakers make static noise when I plug to the computer

By CASANAJ
Jul 29, 2008
  1. I just bought 2 power speakers to play with my laptop and I hear this static noise .
    the weird part is the noise is gone when I unplug the laptop power cord , I can listen the music very clean when I run the laptop with the battery. I used 2 diff brand of Laptops and the results were the same .
    I wonder if there is a filter or something else that can help me eliminate this noise when I plug the Laptop power cord

    Thankss
     
  2. raybay

    raybay TS Evangelist Posts: 10,716   +6

    You likely have something else in the room or on the line emitting electrical interference. The speakers are just amplifying it.
     
  3. CASANAJ

    CASANAJ TS Rookie Topic Starter

    Thanks for the reply

    Why I don't hear any noise when I plug the same speakers to my CD player ?
    The noise is when I use the laptop .
     
  4. BAW

    BAW TS Rookie Posts: 25

    Well i work will sound mixer etc. and it can be the earth which causes a buzz (solution: remove earth cable, not reccomended!) or it could just be some form of feedback!

    Other than that well its got to be because of te earth, I THINK! ;)
    How loud is the buzzing?
     
  5. raybay

    raybay TS Evangelist Posts: 10,716   +6

    Long shot.
    Since both are laptops...
    We see this all the time.
    If you are using those cheap Chinese and Korean power adapters found on eBay, they are a major cause of static and buzzing.
    While the noise is occurring, unplug them to see if there is a change.
     
  6. CASANAJ

    CASANAJ TS Rookie Topic Starter

    Boths Laptos are HP and the Power Supply was made in China
    Input 100-240V 1.6A 50-60HZ
    Output 18.5V (18.5V) 3.5A
     
  7. CASANAJ

    CASANAJ TS Rookie Topic Starter

    I have to play the music loud to avoid the buzz
    Where is the earth cable on the laptop ?
     
  8. raybay

    raybay TS Evangelist Posts: 10,716   +6

    If the Power Adapters have an HP label on them, they are probably ok. If they have a label withpout HP on them, they could be the cause.
     
Topic Status:
Not open for further replies.


Add New Comment

TechSpot Members
Login or sign up for free,
it takes about 30 seconds.
You may also...


Get complete access to the TechSpot community. Join thousands of technology enthusiasts that contribute and share knowledge in our forum. Get a private inbox, upload your own photo gallery and more.