I recently bought a SVS 20-39 and I love it. I am now on a bass movie hunt. I can only watch movies that have bass potential. lol Anyway some movies fall short with regard to bass. I have my system all calibrated. Do you guys change the bass from movie to movie or just leave it at the appropriate setting? Thanks! BTW I can no longer watch Jurassic Park. I have JP3 on DVD and it rocks! I watched the original on VHS and it does not rock. I now have to go out and by the DVD version. It seems the DTS one is the best.