Well, I finally got to use the Bluetooth Speaker behind the rear seat and I like it a lot. Up close it is a bit heavy on the base, but get a little distance and it sounds pretty good with plenty volume.
After a month of ownership, I forgot to look until I read your post, that apparently the previous owner ordered the bluetooth speaker. Pretty cool, I could see using it on the kayak. (audio quality is better than I expected actually!)
We’ve used it a couple times also…..at car shows & such. We often forget that its there and could probably use it more. Neat little feature and glad we have it.