would like to be able to play everything from low 30s to mid 60s frquency range. WinIsd offers and ebp of 91.7 for the driver. JBL says anywhere from 1.5ft3 - 3ft3 per driver. Only issue with 3ft3 is it wont fit into my trunk (2002 cavalier). Plus since its going into a car opposed to a HT...