Whatever. I think if you did a dispassionate accessment of what was contributing to the "deep and tight" bass, it would be because of other factors than his use of the RANE crossover.

"Great everything" comes from getting a lot of details right, from placement of the speakers to acoustics of the listening room, and least significantly, the particular electronics employed.

The only time electronics will make an obvious impact on the end sound quality is when a completely different topology is being employed, i.e. using tube based gear instead of transistor based gear. Even then, the changes are not going to be "like night and day". The acoustics of the room play a much more important role in the sound of a system than any electronic change that can be made.