***To have better sound quality, after you turn on the software to play the cd, there is an icon picture "speaker", on that, you need to adjust the volume level below 30, which mean almost to the lowest. And then go to CONTROL PANEL, click on the SOUND icon, you can turn the volume all the way up to 70%, without doing all these, the sound will crack when you turn the volume all the way high.***
NOTE: This is a notebook speaker not like home theatre system, the sound quality is great but can not expect to turn all the way. So please follow the step to get the quality of sound from this speaker.