One earbud is louder than the other

[lazercrn]

I own the bang and oulifesn e8 and they worked perfectly until one day i listened to the and the left earbud is noticably louder than the right one please help

 

[lazercrn]

MERGED QUESTION
Question from lazercrn : "One earbud is-louder"

I own the bang and oulifesn e8 and they worked perfectly until one day i listened to the and the left earbud is noticably louder than the right one please help