Last I understood, he was planning to use the crown(s), but hooked them up initially to his other amp(300watts) and has been so happy with them has not bothered to set them up with the crown(s).
ps to AcuDefTechGuy; At some point I may have to lend you one of our new external, DSP, 2x2.4kW sub amps to test out
btw; All our new subs offer the same stellar performance and build quality that we are known for, at spectacular prices. The 18.0C and 18.1 are exceptionally great value.