I'm currently running 2 L7's ported at 38 Hz. It's an alright SQ setup but ive heard alot of people siding on DC, same with me. Yea I need a pull in pull out box. I succeeded with the 2 XL's at 32Hz, I just need to build it now. The XL's are loud but they sound sexy still. I was wondering with the Solo X's because I've always liked kickers overall products but the "Made in China" has kinda discouraged me