its a process. this is the begining. i have a astro thats been braced and deadened with second skin all through it. we literally jus swapped the set up from the van into the blazer to see what it would do. no tuning or anything. i found my peak freq and played a song that peaked @ it (43hz) and put it on the meter. i could prob get more out of it with out clipping or to much distortion. itll be getting rebuilt based on what we have seen it do with this set up.