Product details:

This 12 Treis 300 Series Subwoofer has a proprietary low profile heavy gauge stamped steel Alpha Basket for extra durability and longevity. The EPDM surround provides a surround for enhanced control at extreme temperatures. Rated at 500 watts RMS / 1500 watts MAX you will be hearing high-quality bass where ever you go! Today the new Alphasonik is committed to pushing the envelope with regards to technology quality and value. Their electronics feature audiophile parts and circuit topology designed to let the full musical experience come through loud and clear.1,600w Max (500w Nom).
High rigidity (IMPP) composite seamless cone construction with honeycomb design.
Dual layer (elastic polymer & fibre) surround for a highly durable design.
Massive 90 oz double stacked magnet and long voice coil with aluminium bobbin for increased bass and improved heat-dispersion.