After getting buzzed last night i accidently spilled some beer on my right satellite speaker (logitech z623)
The right speaker now sounds muffled and tinny.
I presume liquid must have gotten between the metal bolt in the middle and the fiber itself, making the cone unable to move well.
Is there any way to fix this or should i throw the whole set away?
A way to fix it, maybe if you take it apart and clean it. There is usually a way to fix almost anything, the real question is "will I be able to fix it and is it worth it?". If you can't take it apart yourself then you can just find a used set and replace yours. I've seen those models sell for $30 or 40 on craigslist.