He is using the 804d3, measurements of the 804d4 below (note newer model so could be different). They measure pretty lean and sounded that way to me with lots of sibilance (strong “S” sound probably due to that 5k peak). I find the entire B&W line light in the bass with the exception of the 802 which was ok and the 800 was enough…. But I put a very high priority on bass and honestly can only be happy with subs these days so YMMV.
Eric makes a good point that flat speakers like Revel might sound a little dull to you at first so demo stuff for sure. But after a few days/weeks flat will probably sound fine once you adjust. However If you like the 804 and just want more bass, subs are the answer.
There are lots of good speakers in this price range so I would read up and then demo.