Hi Dylan, had the same issue on my device after arround 3 years of usage. Checkout this guide: https://www.youtube.com/watch?v=J7mKFgdN... It solved my problem by bending the metal band up slightly.
I could solve my own issue thanks to that dude: https://www.youtube.com/watch?v=J7mKFgdN... The metal band inside the right speaker was slightly touching the membrane.