12-inch, 400-watt custom-built Eminence speaker delivers plenty of punch starting from the bottom octave. The rear-firing bass port provides ample reinforcement of the lowest octave without “chuffing” through the aluminum grille. The front mounted speaker and “unibody” solid-core plywood construction provides maximum strength without excess weight. The modular BlockDock system lets you easily remove your Bass Block for fly dates or mount it in the cabinet of your choice.