8″ vented SQ loaded enclosure Subwoofer GZUW 8SQ-D2 Resonance-free aluminum cast basket 2″ copper voice coil High quality vented enclosure Airflow optimized ventilation tube Solid enclosure from MDF GZ Push terminal Power handling 300 Watts RMS Impedance 2×2 Ohm Xmax 20mm (p2p) New volume 20.5 Liter Tuning frequenzy 40 Hz Roll-off frequenzy 33 Hz Ventilation port 1x7cm Port length 34cm Dimensions (w x h x d) 430 x 250 x 318mm Backwall angle 78°.