I've been thinking about doing a 4th order in my grandprix with a plexi back and the port firing through the ski hole. I have never used, heard or even seen one in person I just think they're cool to be honest. I'm wondering if it would be louder then a basic slot port box like I'm running now. I will be running 1 audiopulse axis 12, I don't think I have room for both, off a treo ssx 2000.1. So if anyone has any insightful info if this should be louder then a regular slotted box or if this is a good driver to use I'd appreciate the input.