Question about Logitech R-20 Computer Speakers

13 Answers

Melting speakers A year and a half ago I purchased a set of Logitech R-20 speakers with subwoofer for my computer, and I was very impressed of the quality considering the price. About six months later I got a new brand acer computer that runs on Vista. 3 months after that, I heard a strange crackling noise coming out of the subwoofer and smelt burning plastic. The power cord and plug of the subwoofer was smoking and melting into my powerboard. I immediately unplugged them, threw them out and got myself a new powerboard. I decided to purchase the same speakers again, because I guessed that it was just a faulty powerboard. The other day (about 6 months later) when I was installing a new logitech keyboard and mouse, I smelt the familiar burning smell and heard the same crackling noise. I am now considering buying another brand of speakers, but could it just be my new computer's audio portal? Or am I setting up the speakers wrong? Does anyone know a solution to this problem, I need to know A.S.A.P I think I have the same problem...I have used my R20 speakers for 1 1/2 years although for the last 6 months I haven't used them. Last night I plugged them into my flatmate's acer (which runs on Vista) and I had the same problem - a crackling sound and a smell. I only had them plugged in to the acer for about 2 minutes now the speakers appear to be ruined! Is this the end for them or can I fix them does anyone know?

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  • 3 more comments 
  • pallyally Feb 14, 2009

    Thank you for the last comment I will let my flatmate know. Will she have to get that fixed by a specialist or is there anything she can do? Is this a common problem with acers? As for my speakers is there anything I can do to fix them. I usually use them with my own laptop (which was fine in the past) and my ipod which was also fine in the past and since the acer incident last night no longer works... Is there anything I can do for the speakers?

  • pallyally Feb 14, 2009

    Thank you for the recommendation of buing a surge protector. While this deals with source of the problem I am wondering if there is anything I can do to fix my speakers now?

  • pallyally Feb 14, 2009

    I know I am using the correct power cord but is there any possibility it may have stopped working properly and be letting too much power through all of a sudden?!

  • pallyally Feb 14, 2009

    thank you emissionwiz, though i'm not sure I understand this solution....
    Does anyone know if there's anything I can do to save my speakers?

  • pallyally Feb 14, 2009

    Thank you sublimation...just to check I understand do you mean that the computer is telling the power source that plugs into the wall to put more than 12v into the speakers? It is an AC/DC adaptor with output 12V so would it actually be possible for more than 12V to go through it? And do you mean that more power is going through which is causing the burning smell from the speaker and the crackly noise?
    However now that I am not using the acer and am back on my ipod which doesn't usually cause this problem why should the problem persist? Is this because the speakers are broken forever?

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13 Answers

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Doesn't sound like you are doing anything wrong.
it is possible that your AC electrical voltage coming out of the wall is a little high and the R-20's can't handle it i suppose.

do they start to smell only when plugged into the computer(s)? or will they smell when only plugged into the wall outlet?

Posted on Feb 14, 2009

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This seems to be a defective product model line due to poor manufacturing. i would try a different model number. The cracking is a result of coil meltdown.

Posted on Feb 14, 2009

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Your problem should be solved by reading this

http://www.recalls.gov.au/view_recall_detail.php?Recall_ID_Auto=15723

Robert

Posted on Feb 14, 2009

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The problem is maybe you are not giving correct power to the speaker. Your power level is fluctuating thats why your speakers are creating these problems.
try any speaker with low power or use any power stablizer for giving power to your speakers.
pls rate me
thank you

Posted on Feb 14, 2009

  • vishal garg
    vishal garg Feb 19, 2009

    ey buddy,
    you are wasting your time here. You will find nothing here if it was that you can find
    answer here till now should have got the answer
    stop wasting time go to reairing shop and get it repaired
    stop wasting time buddy
    regards

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My best answer would be to say that somehow, your wiring is getting wet or damp and causing a short. Check all of the wiring that was changed. Look for loose or broken connections. Then, make sure that all of the connections are covered with shrink tubing or electrical tape to keep the moisture out.
Thank you
Computerrep

Posted on Feb 14, 2009

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Check out the speakers in any other operating system and confirm the faulty properly and also .in the speakers you can check out manually if you have an idea and proper knowledge of using multimeter and soldering iron.just checkl out the main board and replace the faulty component on the circuit board of the speakers,

Posted on Feb 14, 2009

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Hi and welcome to FixYa,

Initially, to your concern of the speakers:

  • if you would be performing a DIY (do-it-yourself) type of repairs, then it would only cost you the replacement parts;
  • A DIY however requires familiarity with electronic components & circuitry, use of a DVM and a soldering iron;
  • if you are uncomfortable working with electronics, then perhaps your best bet would be to seek the services of a qualified professional;
  • if you would factor in the cost of repair, the downtime and the efforts required to effect the repairs, then it might turn out to be no longer economically reasonable;
  • based on this, you may want to re-evaluate your options and consider simple replacing the speakers.
As to the Acer, best test would require checking of any leakage AC voltage on the DC ground of the computer.

Good luck and thank you for using FixYa.

Posted on Feb 14, 2009

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I have to agree with Gopi. It sounds like the computer is deliberately telling the speakers to pull more voltage from the source which is causing the cable-melting. You might want to find out what type of audio you have (onboard or a seperate sound-card) then contact either the manufacturer of your motherboard or sound card and notify them about this issue. This is a major problem just waiting to happen, and you shouldn't be the one that has to deal with it.

Posted on Feb 14, 2009

  • Peter Steiert
    Peter Steiert Feb 14, 2009

    As MrNeedles mentioned. Does this problem still occur when the speakers are plugged into the power jack but not the computer? If so than the audio being sent to the speakers is causing an increased request in voltage which overloads the power lines and causes them to melt.

    You might also want to look into what bunnydawg found:
    http://www.recalls.gov.au/view_recall_de...

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Plz check your power supply ..is it correct ??

Posted on Feb 14, 2009

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It seems to be a power surge causing the burnouts in the speaker. I recomend you to buy a good surge protector or even a stabalizer. This should reduce the problems with any brands of speakers..

Posted on Feb 14, 2009

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Hi
you have problem with audio portal in your computer....
check the audio port ...it is supplying high voltage.....

Posted on Feb 14, 2009

  • gopinath pasupathy Feb 14, 2009

    you cant do anything other than calling a technican from acer to look into the motherboard and check the components associated with it causing such a high power to the audio port......

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That means that there is a short inside speakers.

Posted on Feb 14, 2009

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  • Ginko
    Ginko Feb 14, 2009

    If the speakers stast making smoke or smell like bburnt, that means that the speakers have a short inside.

    Shorted speakers can litterally destry your audi card, or an amp while they are operating.

    Do not connect the speakers anymor and get new ones, if you damage your (onboard integrated) audio adapter, that will be a much bigger damage.


  • Ginko
    Ginko Feb 14, 2009

    The point is that the charge to repair the speakers at a qualified repair will ne more than the cost of a new speakers set with same specifications, at least here in UK, and in US/Canada, where minimum charge for an electronic repair job is about $50.

    A new set of Logitech r20 or similar speakers will start at about $25.
    See below.


    Logitech R-20


  • Ginko
    Ginko Feb 14, 2009

    All you can do is take apart the speakers, find the short and solder it back in the right way. The speaker performance may be affected if the fault damaged the speaker cardboard surface.

    If I was in your shoes I won't try fixing them. You are going to risk a motherboard to fix a $20 speakers that were not supposed to be serviced (that is what logitech says).

    If the speakers are less than one year old call logitech and see if they can replace the speakers.

    See Contact.

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ARE THE SPEAKER POWER RATING HIGHER THAN THE AMP'S RMS OUTPUT, THEY SHOULD B AT LEAST 20% HIGHER THAN THE RMS OUTPUT OF THE AMP, TAKE INTO ACCOUNT PEAK OUTPUT AS WELL, IT IS THE PEAKS THAT BURN THE SPEAKER COILS OUT, A SURGE PROTECTOR IS NOT A GOOD SOLUTION AS IT DEFEATS THE POWER OF THE AMP AND WOULD HAVE A NEGATIVE IMPACT ON SPEAKER PERFORMANCE.

Posted on Feb 14, 2009

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