Parameters Model No:CYH 212 2X12" PORTED SUBWOOFER BOX 2" VOICE COIL 50 OZ MAGNET NON-PRESSED PAPER CONE WITH FOAM SURROUND 15MM MDF WITH BLUE CARPET COVERED 4 OHM IMPEDANCE 300 WATTS RMS FREQUENCY RESPONSE: 20~300 HZ WOODEN BOX SIZE: (300+415)*360*750MM