Before I begin this, I should say that this is merely my personal adaptation of James Bang's idea, whose technique is based off fishface's idea. I find it the easiest way in the world to replicate the look of inset sides ONLY IF you have a table saw. If you don't, good luck not slicing your hand off. Furthermore, do not do what I do and begin carpeting while the box is drying, nor test it while the glue is wet either. I am only doing so for time's sake. If you have screws, it should be okay since they can hold the boards together until the glue dries, but they do NOT give any actual strength. Also, the port end should be rounded over in the box, which I decided not to do, also for time's sake. Now, onto the technique itself.
This design is for a HiVi D6G. Yes, it's a home audio speaker, yes it's hideous, and yes the box is too large. I've had four of them for a couple of years now, so I figure it's time to try one out as a subwoofer. They have great bass response, but require a shitload of power. I minus whale see how they do in a large enclosure, what harm could come from that?
Note that if you look at the selected designs in mah sig link, the way the panels are aligned is much different. For this technique, you MUST have the sides be the boards being screwed into. The only flaw in my technique is that you must use a .75" wide stick to recreate the same look on the other side. If you glue it properly, it will be fine. Built an enclosure this way for two 15" dreadnauts or juggernauts, (can't remember) about a year ago with no problems so far.
The rest of the build is coming in the next few posts.