Every now and then, I test a gadget so wild that I can’t believe a company actually made it. Soundcore’s $5,000 Nebula X1 Pro projector is the embodiment of that: an ultra bright projector and a 400-watt Dolby Atmos 7.1 speaker system combined in a massive enclosure. With a fast and flexible setup, it lets you screen movies or watch sports nearly anywhere. It’s not just a projector crammed into a big speaker system, though. Everything is elegantly integrated and setup is nearly automatic, thank...