Question about Altec Lansing ACS 48 Computer Speakers

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Blowing Fuse I have a 2.5amp fuse in my speakers, but it keeps blowing. Not sure what could be the root of the problem. Do I need a bigger fuse? It may help to note that the country I'm in runs off a 50Hz cycle, not 60Hz. Not sure that makes a difference. The speakers were working well for over a year and then all of a sudden the fuse blew, and each new one I put it, it kept blowing them. I have other Altec speaker systems that work well and are still working. Would really like to solve this as these speakers sound fantastic!

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  • haraz Jan 30, 2008

    Customer (Hans R. Zelsmann)  

    01/17/2008 01:19 PM


    Question Reference #080110-000127

    Subject: ACS48 speaker system

    Product: Portable Audio

    Satellite Speaker Systems

    Region: Europe

    Date of Purchase: 09/01/2002

    Submitted: 01/10/2008 10:44 AM

    Last Updated: 01/11/2008 12:28 PM

    Status: Updated

    Store of Purchase: Macway- France

    Discussion Thread

    Customer (Hans R. Zelsmann) 01/10/2008 10:44 AM


    Last week I submitted to the problem with

    my ACS48 speaker system ; I believe that here is still a customer but

    NO help at all. You simply sent back my questions. Astonishing and

    rather deceiving ! So I will try once again.

    As it seems the electronics of the amplifier are dead and any

    replaced fuse (1,25A at 220V) blows immediately. The resistance (DC)

    at the entry of the mains plug is about 11 ohms.

    This major failure happened during my absence from home and is most

    probably due to several power cuts of the mains in the neighbourhood

    of my home. It is worth to note that the ACS48 unit initially was

    switched off. However, when the power is re-established the ACS48

    unit switches on automatically !

    This type of ABNORMAL REACTION led to the vaporisation of the fuse on

    subsequent power cuts and at the same time to destruction of

    electronic parts.

    Would you, please, be so kind and reply to the following questions:

    Q1) Did you already experience this kind of problems and is there a

    simple fix ?

    Q2) Is there a diagram of the electric circuit available for the

    ACS48 with indication of the type of the components ?

    Q3) Which of the present Altec Lansing 2.1 speaker systems would you

    recommend for replacement at comparable output power at BEST sound

    quality ?

    Q4) If there is no chance of repair, should I really trash the

    loudspeakers and change to BOSE ?

    Thanks for your answers.

  • ncschulzes Aug 11, 2008

    I have replaced the (blown) original 2 amp/250 volt fuse in my ACS 48 with a similar fuse and have now blown two more just as soon as AC power was restored to the system. The first time I replaced the fuse, I plugged the system into a live outlet; the second time, I had the system already plugged into a switched outlet strip, then turned on the strip. I have not yet tried higher amperage fuses for fear of frying the electronics. Are these speakers history?



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Hi Nattydred
Depending on your country, and voltage, you may need a voltage regulator, or a Battery Backup to keep the fluctuation of energy at line. regular will be 60Hz. so is better to start on that solution first.

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