15 SWS (Shallow Woofer System) Subwoofer. 45D x 15W x 43H centimetres. 15 inch Shallow Subwoofer. 2.75 inch Excursion. Impedance Single 4 Ohms. 2.5 inch Aluminum Voice Coil. Electroplated PVC Cone with Platinum finish. Dust cap directly attached to the voice coil. Product Dimensions? 45 x 15 x 43 cm; 8.4 kg. Date First Available? Item model number?