FWIW, I did review a Yamaha pedestal sound bar with the "beam" speakers
here. The TLDR version is that while it worked to some extent, it was in no way a substitute for an actual discrete surround system. In addition, the sound bar's built in subwoofers were a bad joke at best.
Suffice it to say, Yamaha wasn't exactly thrilled with my review, and more or less opined that trying to apply audiophile standards to such a product was going beyond what their target market would expect. While probably true, it's not beyond what Audioholics' target market would expect, and personally, I'd prefer no surround to a flawed attempt at simulating it.