Some speakers can use power from the USB +5Volts. It cannot make sound on speakers that are not "plugged in" The signal a PC sound card provides, goes to speakers that are supposed to be plugged into the power outlet either from the subwoofer or from one of the speakers. If you are just calling your Z623 speakers water fountain speakers because of where you have located them, then nevermind =) they still receive only the line level signal and are amplifying this signal in its own internal amplifier before playing out.Īlright awesome, thanks for answering! So basically my laptop's sound card can only power through the 3.5mm jack, and since the water fountain speakers are 'unpowered speakers' it cannot power it through a splitter as it's not hooked up to the amplifier which is the subwoofer?Īlso, if the water fountain speakers are designed for outdoor use, they might actually require a different voltage all together like 70V+ of AC voltage from a proprietary amplifier. The speakers will need batteries for the same reason above. You could get around this by buying some wireless speakers/Bluetooth speakers if you are trying to get sound from your laptop to somewhere that power is inconvenient. You don't have to use the subwoofer that came with the speakers but you do have to amplify this signal before it can be used by un-powered speakers. It has the responsibility of all amplification and powering all of your speakers. They are equipped with amplifiers so you can provide all your line level sources to it. This is the reason most 5.1/7.1/9.1 home receivers have not gotten much smaller over the years. They generate a lot of heat and the heat-sinks required, take up a lot of space. Some have headphone amplifiers on them but it is rare to see a soundcard that has say a multi-channel amplifier(does one even exist?).
In your case, the amplifier is on the Z623 sub-woofer or inside it. The amplified signal is then fed to your speakers. This is typically the green wire from your sound card which goes to the sub-woofer for amplification. It is expecting that this signal will go into an amplifier of some sort before it is pushed to a speaker.
So basically, your soundcard is only able to provide the audio signal to the 3.5mm jack.
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