i just spent like an hour carefully taking apart my macbook and replacing my speakers, only to power it back on and have some very poor quality sound. right speaker makes music sound like im listening to a recording on an old phone. no sound is coming out of the left speaker. very upset and disappointed that i spent $40 to wait for delivery and take time to replace and end with an unsatisfactory result. also, the material of the speakers are pretty cheaply made in comparison to the original speakers. ( an obviously cheap quality type of black plastic, cable too long on right speaker, some type of glue is visible on the left speaker, cables covered in a black fabric that is not identical to the original.)