If water has seeped into them they will corrode which will effect their performance. Especially if the ends got wet. You should be able to see the corrosion setting in at the bare ends. In the mean time you can use them as the very high resistance of the water is no where near the much lower impedance of your speakers.
BTW, Bose use to hook up there outdoor waterproof speakers and immerse them into a bucket of water while playing to prove there waterproof status.
BTW, Bose use to hook up there outdoor waterproof speakers and immerse them into a bucket of water while playing to prove there waterproof status.