I added a sub woofer and new speakers to ours and now the sound is great. If you just damaged a few wires, keep them from shorting out and take to an auto sound shop. While there you can decide what to do but if your coach is like my Hurricane the factory speakers are the worst of the worst.
Good luck and safe travels.
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This post is opinion based on experience.
2015 Hurricane 27K
2013 Sea Ray 220SD
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