I just wnated to share a bit with how I assemble my boxes. I am actually curious if I am the only one that does this. I am not going to get into calculating box volume, just how I construct it. I hear that rigidity, and strength are very important in any enclosure. Also, integrity as far as "air tight" goes is also important. So, I figure this step just makes sence if you are gona build your own box, you obviously have the access to the tools. By making the box fit together like a puzzel, where the walls actually fit into grooves, liberally apllying glue (I use tougher then nails. it comes in a caulking tube... badd ***!) in those joints, it is virtually impossible for any air ever to escape. Not only that but the strength and rigity allow you have basically an indestructible box. Generally people just butt the ends of the boards together, glue them and nail or screw them, then add a bead of caulking on the inside. Yeah you could achieve an air tight box, but I am serious about how much more strength you get out of these joints. For high powered subs I would def add this step into building it. If you are going to go the extra mile to buy nice components, go the extra mile with the box, you will achieve a more quality built box tough as hell not to mention the sound quality. Some peopl will say this is not necesary..... Its not however try it and you would notice a difference. Tell me what you all think.