Heh Heh Heh. You also need to add the matching 310S sub (https://jblpro.com/products/lsr310s) for things to sound "right". :)
They're engineered to work together, and while you _can_ go without the sub for a while... it's a shit setup and only useful in the short term.
Wouldn't want to be doing production stuff (or even end user setup) without the sub. ;)