How many did you put in and how did they work?
I did a couple of things over the weekend. First I did up the xover high pass on the sub to 31. Didn't really make a difference as I don't play much in that low anyway, it is just the one 12. Secondly, I inverted the sub. I was following the thread with the 8 8's in the tline and there was something mentioned by Buck that got me thinking. The subs were inverted on that build to clear the line. The depth where my sub mounts is a little less than 7 inches and it hits a 90 degree bend immediately because of the design. That's a lot of blockage right there. I have always liked the look of an inverted sub and planned on it anyway, but it just gave me another reason. I have yet to get it metered, but it does hit harder this way. I'll post up numbers once I get them. Here's a pic.