Hello I get in about 2 weeks my jl audio 12W7 from America imprected by my uncle. so my question is now too housing. Have found in a shop these subframes housings wanted to take it in the masses 550mm diameter and 300mm height, that are 61,2 liters gross fullumen. Now what kind of port diameter should I take and what length? Would the woofer feel at all comfortable in such a housing? Would I be glad about euro help. MFG