I am looking for recommendations on a 12" woofer to handle the low end in an active 4-way. It will crossover to a pair of Morel MW-164 6.5" midbasses. The Morels' F3 is 59Hz in a sealed enclosure. This driver should handle 60-80Hz down in a sealed box. Space available for driver is 20 cubic feet. Qtc of the sealed enclosure should be around 7. I like how a pair of Stryke SAL-SB12's model in 20 cubic feet sealed. F3 is below 27Hz, which is respectable. Efficiency is matched to the Morels, too. Opinions on the Stryke or suggestions for a better choice? Thanks.