USB connected speakers?

Discussion in 'MacBook Pro' started by chuckm1020, Aug 6, 2010.

  1. chuckm1020 macrumors regular

    Aug 27, 2009
    So i just bought the B&W MM-1 Speakers. And they sound great of course. Just something weird. I noticed when listening to Itunes with the speakers plugged into the USB input the comp sits at about 44-45C with nothing else open. Then ill unplug the USB cable and use the internal speakers and the temp drops to about 39C slowly :p Why would USB inputed speakers cause the comp to run 5C hotter when listening to music lol. I checked the CPU usage on Itunes and its about the same cpu usage when unplugged and plugged in. Any idea haha?

    Edit: I just discovered this. Actually when they are plugged in Itunes uses about 2-3%cpu usage in activity monitor and kernal task is sitting at about 7-12%. when i unplug the speakers Itunes goes up to about 11% and kernal task drops to about 1%. HahaHa. this is not a big deal but im so confused also lol
  2. wywern209 macrumors 65832


    Sep 7, 2008
    do you rly want to know?
    if the USB cable has to provide power to the speakers, then the increased amount of power usage will produce more heat.
  3. chuckm1020 thread starter macrumors regular

    Aug 27, 2009

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