Hi Dave, I did some quick calcuations for port size, and if you have a 2 inch port in a 1 ft^3 box, then for the Fostex 207E, an ideal port length would be 1.6 inches. Also, you are right, the 207E is a better choice becuase of increased Qts over the 206E, the bass is significantly better. The only way the 206E will be able to produce equivalent bass is the "one-note samba" design, which is shy peole have called some bass reflex implementations of the 206E boomy. Wonder if this port length of 1.6 inches works for you. Let us know! -akhilesh