sound waves reinforcing oneanother I heard that... literally... Just an update the build is nearing its end... I went for the ported design with a few mods to the original sketch I was good. I got two fender 300watt 15" speakers in it and two black widows... Man it totally rumbles my whole house the coliseum lead I was testing with nearly vibrated off the cabinet. So i put acoustical foam on the interior and it sounds great... the jaack is the old school 3/4" disc sunn/ fender type. I added scoop handles similar to those found on marshalls. silver corners and black tolex... I will post all myt pics when i'm finished with the grill cloth, which i just got in the mail... thanks to jeff troy, you're the ma couldn't of replicated it as well without you!!!...i'll post some pics and descriptions later...