not trying to thread jack, but whats the website that calculates box sizes.. the one where u enter in how many cuft, how many subs, tuning freq then it shows a drawing with wood sizes in different colors
well the width and the height is whatever room you have to work with, the xmax is 13mm for the mach 5, u don't necesarily have to have driver displacement but u can put down, like .5, and the numbers of woofers would be 1, and the nominal diameter would be 12'' round