Santa brought me Vance's cookbook for Xmas this year, so little crockett has been reading it before bedtime every night. interesting read on Transmisison lines. which brought me to the EA website. they too have a nice writeup- very clear and 'layman". So, i am looking at a picture of epifiani's UL112, and i notice this box shaped port. Is this a small shelf port, a square plastic insert, or is it the mouth of a hidden tramsmission line folded up inside? I see the bergantino's have an interesting shape to thier corner ports as well (at least on the 112). Jorge has that weird , ahem, intersting looking internal Horn-esque loaded speaker. anychance it's a T-line hidden inside any of these? jsut curious. I bet the guy / gal who creates a modeling program for designing transmission line cabs will become fairly popular. Thinking out loud here, but any of your input/thoughts are welcome.