other in the same class. it will be a 50/50 music/ht sub and should be able to compete with the servo 15 in terms of bass extension, output level from 16hz to 80hz, impact (how much u can feel the subwoofer),transient response, distortion. In short it should be a very musical sub and create enough output to be close to reference (maybe -10db from reference)accross the frequency range. some other requirements are that it should be smaller than 150 liter, but 200 would be the absolute max. budget- about 500 to 800 for a passive design. I will be buying some external amp with plenty of juice to power it. the stryke 15 with dual pr kit seems to be the ticket since it smokes any subwoofer in terms of output level, but I don't know how musical this sub will be.