well what i'm doing is a bandpass box with 2 sx12's and a orion 2500d ..it will be 2.5sealed playing into a 1.8ported.. my port will be 45square inches and 15deep tuned at 52hz......yeah its high but i'm tuning it to the incar freq.but i might tune it to around 70hz i dont know yet all i know is it will wannnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggg............as far as getting it metered.....oh yeah i will do that as soon as i get everything i need