I have read up on atomics site for box recommendations for the apx/apxx drivers. My friend wants to run a single apx 18 for daily.. He has roughly 6 cu/ft to work with. Anyone on here have personal experience with the apx 18... for daily... he wants me to build the box and wants to run an atomic 5000.1 to, will it also be to much power for the sub, and what is a good tuning frequency...