Chosen Solution

Now that I know it is the right speaker, what do I do about it? Is there a fix I can download or do I need to take it to apple for repair? Update (08/27/2020) Mine is a 15" Macbook pro. I only see fixes for 13 and 16". Any suggestions?

Here is the 15” versions: MacBook Pro 15" Retina Display Mid 2015 Left Speaker Replacement And the needed part MacBook Pro 15" Retina (Mid 2012-Mid 2015) Left SpeakerMacBook Pro 15" Retina Display Mid 2015 Right Speaker Replacement And the needed part MacBook Pro 15" Retina (Mid 2012-Mid 2015) Right Speaker