To achieve no limited achievement. ET has proud to present this massive 15 inch heavy duty subwoofer. This Woofer consisted with custom designed thermal resistance Aluminum cone, 2 layer copper wires with 152 mm wide voice coil, Dual Conex spiders, and maximum excursion 25mm.  This complex build is to handle extremely low frequency (FO <20 Hz) with more than 2500 Watt input. This sub is not only powerful but also a bass kicker.