Tower speakers died over winter

[Livindadream]

Finally got the boat back from being in the shop getting some much needed upgrades, started tinkering and my tower speakers aren't working. They were perfectly fine in the fall. Anyone got any "most likely culprits" for me? Not much of an electronics guy, so any suggestions of where to begin trouble shooting would be much appreciated.

[Yellowmobius]

Run a set of wires directly from your amp/stereo to the speakers.
That would tell you if you had a break in a wire or not. After that I might check for a blown fuse, not likely if your other speakers still work.