Peak and RMS limiter settings for Eminence NSW6021-6

Hey gang! I have decided to purchase a DBX PA2. Im super excited to get it set up, as my first subwoofer enclosure is near completion. But what I didnt realize is that the limiter parameters are not setup with time parameters. Ive heard that there are calculators/conversions that need to be done, based on the driver specs, so im here to ask for some assistance with setup. Im building some Paraflex Golden Formula 21s with the Eminence NSW6021-6. Any help is greatly appreciated! Thanks in advance!