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