Old stroekrs are great for spl applications, they odnt ahve much SQ but for burps they are great, they are great for competitio, but i wouldnt strongly recommend them for music because they dont keep up well .
freind of mine had 2 15" strokers in his car years ago and they pounded so hard it was hard to inhale, He was using a huge ported box that took up the entire back of his car, He tried them in a smaller sealed box to save space and they sounded horrible.