Solved! Echoing speakers

[TheTrueTryhard]

Hello,
i have a hp netbook laptop and whenever i play music or a video my speakers make a strange echoing noise. How do i fix this?

 

[EnderWiggin]

Check the audio manager, for example if you have a Realtek HD Audio Manager, click on Sound Effects tab, dropped down the "environments" list, chose "padded cell"...