This should increase the overall system sound effect to be more louder. Check Loudness Equalization from the list and click OK.Select Enhancements from the opened window.Click on the speaker icon on the sound mixer popup.Click on the Volume icon in the system tray.Let’s go through the process step by step: In Windows, there is a loudness equalization option supported by most sound cards which needs to be configured in order to make audio louder. This method will enhance the maximum volume of the overall system. Using VLC Player Using Audio Enhancements.