1. Right click on the small speaker in the tray area at the lower right corner of the screen. In the right-click menu that comes out, click “Play Device”. 2. In the form that comes out, double-click “Speaker” ;
3, come out a speaker window, click on the "level", the tab card item, point to the first line of speakers (your computer may display the name of the sound card here), "balance" <;
4 Drag in the balance here to 0-100 to turn off, get bigger and smaller, left front and right front volume
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