If I had any say, I would ban all outdoor speakers on RVs. We go camping to relax and spend some time just enjoying the quiet. To have someone crank up their brand of music so the entire loop can hear it is beyond inconsiderate.
Isn't that what headphones/earbuds are for?
As for the statement "a bunch of Californians" is concerned - well - not all Californians are inconsiderate slobs - thank you very much!