Bose in-ear headphones - Black with black/white cord "left quiet" Questions

...left speaker for my quiet comfort 2 headphones is starting to give this static sound. I've unplugged all the cords so I know it's the speakers fault. It also sounds like it's coming from the noise ...

...left. I kept listening for a few moments the sound level went back to normal for a second and cut back out. I fiddled with the cord like you would with a cheap pair but nothing. Only really quiet ...