Hi KC10CHIEF, I am in a similar situation with our Cougar 315RLS 5th wheel. We went with the Yamaha ATS-108 soundbar and are installing it on the shelf behind the monster Summit TV. We are christening our trailer the 1st week April so I haven't finished hooking everything up yet, but here is what I like about this application so far: the 3"subwoofers are integrated into the bar so it's a clean install. It features "clear voice" technology so it enhances dialogue which is a constant battle, too much boom and you can't hear the voices. It is 4K Ultra HD compatible and it has HDMI CEC ready which allows you to use the TV remote to control the bar and since it is going to hidden behind the TV, the included remote will not see the bar. The Summit TV is already set up for this as long as you plug the bar in the HDMI 1 slot, you have to do some minor programming. Now if you play an Ultra 4K Blu Ray disc, it will automatically be picked up by the soundbar. There is even an app for your phone to control the bar. We paid $149 at Costco. Read this review from techhive:
https://www.techhive.com/article/329...08-review.html
This may not be the big home theater sound you are after, but it has great sound in my humble opinion. You can hear it at Costco. We camp a lot at race tracks so noise is not a big issue, but we are very considerate of our neighbors always. Watch and listen responsibly. Cheers.