Hey there forum, I purchased 2 Fi X10s last year after Christmas and threw them in a prefab box for my Silverado. They sounded great! I recently got rid of my silverado but kept all of my system equipment and now I drive a Chevy Traverse. I was wanting to build 2 different boxes for the back: one for spl and the other for sound quality. I was looking into building a band pass box and found a great box dimmensions calculator but it requires information about the speaker. I scoured the website looking for it but could not find any details. I was wondering if anyone had that information on paper or could direct me to a link to it. It would be greatly appreciated! thanks