meh never had 1 sealed sub have 2 12' 600w total rms subs sealed now in a trunk car went to a friends house today and put it on the TL and hit a 139.xx bassrace style .. 141.xx on a tone sealed up on the dash ... still have some tweaking to do and i just bought this system for somwthing temporary not to put it on the meter just had to see casue it was louder than i expected and it hit nice numbers IMO