Don't touch the computer equalizer yet (it will be difficult to adjust the sound if you do). The equalizer buttons are all in the middle. The treble of the speaker is also in the middle position, and the bass knob is only turned on 1/4 (listening to music at medium and small volume). If the volume is high, the bass can only be turned on 1/5, otherwise too much bass will suppress the treble and the sound will become turbid and unpleasant to listen to.
If the bass is too heavy and it is not enough to turn off the bass completely, you can pull down the bass button of the equalizer a little (the leftmost ones) and adjust it slowly while listening to the sound until you are satisfied.
If you listen to music in the dead of night, you need to turn the volume down to the minimum (the sound you can't hear next door). At this time. You need to turn on the bass and treble completely to have the bass and treble effect. Characteristics of sound-sound is not enough for bass and treble.