Pioneer TS-SW2541D 10" 4-ohm Shallow Subwoofer 10" SHALLOW MNT SUBWOOFR 10" SHALLOW SUBWOOFER;1000W MAX, 250W NOMINAL;4_;FREQ RESP: 20 HZ - 1 KHZ;SENSITIVITY: 87 DB;SHALLOW DESIGN ;CARBON FIBER DUAL IMPP COMPOSITE CONE;ALUMINUM DUST CAP;HIGH-ENERGY STRONTIUM MAGNET; 3-LAYER "M" SHAPE FIBER WOVEN SURROUND; 4-LAYER, LONG VOICE