I run 2 Type R 12" 2 Ohm Subs in a bassworx ported box. I am running the NEW series of Sony 1400 watt class D amp and I hit 139.6 Db. What would an average DB/SPL be for these subs? I will be getting a 800 per channel (rms,2 channels) 4000 watt max Dark Blue amp. What would be a sub that has good listening sound for normal music but a good power handle for SPL? and I guess I want SQ and SPL. I want somthing that can hit extremly hard and loud for competing, but offer good sound for when I wont be competing.