A few years ago, I bought a soft cover book, Loudspeakers for Musicians (or something like that...it's at home). In it are a number of folded horn projects called Snails. The Snail 1 is for a single 12, the Snail II is for a single 15. There are others but these are the two most electric bass related. So...any of you DIYers out there build either one of these puppies? If so what is your impression? Also, for those who had never heard of the Snail enclosures, the author's twist on traditional folded horn design was that he ports the woofer's enclosure and feeds it into the horn as well as sometimes subdividing the throat to enhance the midrange and high end performance.