Just get a decent portable Bluetooth speaker! You can use it inside the RV, outside at campfire, take it to the beach, or anywhere around the yard. I have the
Sharkk, but the
Creative Roar would be even better. BT or 3.5mm line input.
Once I wanted to replace my TT stereo. The HU is so un-user friendly and remote rarely works with it. Speakers suck inside and out. I was looking at $400 for a decent quality replacement HU and speakers. I'm so happy with my $20 home DVD player, $1 RCA to 3.5mm cable, and $60 speaker. Less money spent and way more versatile.