There are CAD drawings of the subwoofer in the first link, if that is what you were reffering to. If you're looking for a sealed design for sound quality, I think you'll be very impressed with this design, Also if you use the DCX2496 with it you can make it sound like a sealed sub with simply adding in a filter, if you felt it did not sound "tight" enough. I believe the quality and flexibilty of the components and the overall design is far beyond that of the majority of the subwoofers available. at any price.
