I have Logitech Z313 speakers which include a subwoofer. My question is is it possible to turn off the subwoofer (or heavily mute it) using settings in Windows 8.1? I am using VIA HD Audio, but there are very few settings in this program for adjusting anything.

When I play music at night the subwoofer sometimes is too loud and that is why I ask.

3 Answers 3


No, you cannot directly control your subwoofer from your computer.

Your speakers are only 2 channel - they use the standard stereo 1/8" TRS connector to the PC. Thus, there is no dedicated subwoofer output that you could possibly control from the PC, only the standard two-channel stereo mix.

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An option you might have is to use your media player or sound card driver's graphic equalizer feature to cut down some of the very low frequencies.

  • Its pretty unusual - most speakers of that ilk have a seperate volume control for the subwoofer, but this dosen't seem to.
    – Journeyman Geek
    Jan 22, 2014 at 5:07
  • 1
    Thanks for the information. I did find another setting in Windows called Low Frequency Protection which does a lot of the same as the equalizer. It cuts out all lows.
    – L84
    Jan 27, 2014 at 5:13

I had the same problem. I use Realtek, though, and there is a mixer setting (see if yours has an equivalent). I found that turning these 2 settings down in the equalizer turned my subwoofer off. If VIA has this, then try turning those dials down.

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I also have a Realtek audio card, but the Realtek equalizer seems to be disabled and instead I found an installed application called Dolby Audio. I'm still playing with the (unlabeled..) equalizer.

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