yeah i have been told that the sub in the trunk wont do it im actually headed out the door right now to go look for some good *** door speakers that will pound and sound good, gonna get alpine probable 3 way speaker with the woofer, mid and tweeter. i didn't think there was speakers behind my seats either but the websites i looked at last night were saying there were speakers behind the seats on the roadsters too. i haven't gotten around to looking but no i don't believe there is.