Title pretty much says it all.
I'm getting ready to start on my first wall build. 2 fully loaded btl 18's (UFO) of an opti6000d possibly two later this year. I listen to mostly rap from the 90's (I'm old) and 90's alternative rock. I want to move some serious air and have a flat response up to around 60 where my midbass will cross in. The meter doesn't mean much thing to me , I'm not going to compete and my ultimate spl goal was 150+ at sometime in my life and I'm sure this setup will do that pretty easy. I'm not sure on the sizes of the chambers and amount of port space I'll need for a 4th. If I go with a flat wall I'll be doing 6.5 cubes per and 15 inches of port tuned at 34. I'd love to do something different than anyone around my area though.
