Chosen Solution

The internal Speakers in MBPr 15" 2012mid are not as good as the later versions. Mid 15 model sound much better than 2012 version so I am trying the replace the speakers. From the informations of the speaker parts being sold in this website, I can figure out that 2012~2014 models are exchangeable with each other. But I am not sure about the 2015 version. Does anyone tried this before?

As you may see on these 2 guides (for 2014 & 2015 15" MBP retina), They have the same shape, same screws & apparently the same connector. I would say yes, but I could not be 100% sure about it as this information is not provided anywhere (no part on the store, and I’ve not been able to find it elsewhere). MacBook Pro 15" Retina Display Mid 2015 Right Speaker Replacement MacBook Pro 15" Retina Display Mid 2014 Speakers Replacement