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Powered speakers

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  • S Offline
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    suzyb
    wrote on last edited by
    #1

    I have a set of powered speakers that do not seem to be working. When the speakers power is switched off I can hear sound from the speakers although it is extremely quiet. To hear the sound at a decent level the source volume has to be up extremely high. However when I switch the speakers power on I get no sound from the speakers at all despite the power light indicating the speakers are getting power. It is my understanding powered speakers amplify the source no matter what it is so I tried connecting the speakers to my laptop as well as my mp3 player but no sound could be heard from either except when the speakers power was off. Is there any reason this could be happenning or is it a case of broken speakers? SuzyB <i>If I had a better memory I would remember more.</i>

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    • S suzyb

      I have a set of powered speakers that do not seem to be working. When the speakers power is switched off I can hear sound from the speakers although it is extremely quiet. To hear the sound at a decent level the source volume has to be up extremely high. However when I switch the speakers power on I get no sound from the speakers at all despite the power light indicating the speakers are getting power. It is my understanding powered speakers amplify the source no matter what it is so I tried connecting the speakers to my laptop as well as my mp3 player but no sound could be heard from either except when the speakers power was off. Is there any reason this could be happenning or is it a case of broken speakers? SuzyB <i>If I had a better memory I would remember more.</i>

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      Maximilien
      wrote on last edited by
      #2

      it might depends on the source. for example, on my iPod, if I use the dock, it has an line-out that if volume "independant", so when I plug it into my amp, the volume will be controlled by the amp. but if I plug it with the headphone port, I have to be certain that the iPod volume is set at least high to be the equivalent of the line-out. so, check where you plugged you powered speakers either in a line-out or an headphone port.


      Maximilien Lincourt Your Head A Splode - Strong Bad

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      • M Maximilien

        it might depends on the source. for example, on my iPod, if I use the dock, it has an line-out that if volume "independant", so when I plug it into my amp, the volume will be controlled by the amp. but if I plug it with the headphone port, I have to be certain that the iPod volume is set at least high to be the equivalent of the line-out. so, check where you plugged you powered speakers either in a line-out or an headphone port.


        Maximilien Lincourt Your Head A Splode - Strong Bad

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        suzyb
        wrote on last edited by
        #3

        I tried the speakers with my portable cd player (yes I even dug that relic out of the cupboard) and with another PC. When connected to the cd player sound could be heard when the speakers were switched on but even at maximum volume the sound was barely audible. With the PC, sound could be heard through both powered and non powered speakers but again even at max volume the sound was barely audible. All I'm trying to do is establish if the speakers work so I can flog them. :sigh: SuzyB If I had a better memory I would remember more.

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        • S suzyb

          I tried the speakers with my portable cd player (yes I even dug that relic out of the cupboard) and with another PC. When connected to the cd player sound could be heard when the speakers were switched on but even at maximum volume the sound was barely audible. With the PC, sound could be heard through both powered and non powered speakers but again even at max volume the sound was barely audible. All I'm trying to do is establish if the speakers work so I can flog them. :sigh: SuzyB If I had a better memory I would remember more.

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          Mike Dimmick
          wrote on last edited by
          #4

          Modern PC sound cards are designed to drive line inputs. They no longer have a power amplifier on them to drive speakers directly. You absolutely need a separate amplifier. Your other equipment was designed to drive headphones. Headphones don't need so much power to produce decent output. The CD player sounds like it has a greater maximum output than your other devices. It sounds like the amplifier chip itself has died. The little sound you hear when at maximum volume is probably just leakage from the input. Stability. What an interesting concept. -- Chris Maunder

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          • M Mike Dimmick

            Modern PC sound cards are designed to drive line inputs. They no longer have a power amplifier on them to drive speakers directly. You absolutely need a separate amplifier. Your other equipment was designed to drive headphones. Headphones don't need so much power to produce decent output. The CD player sounds like it has a greater maximum output than your other devices. It sounds like the amplifier chip itself has died. The little sound you hear when at maximum volume is probably just leakage from the input. Stability. What an interesting concept. -- Chris Maunder

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            suzyb
            wrote on last edited by
            #5

            OK thanks. That helps me understand things a little better. SuzyB If I had a better memory I would remember more.

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