14cm Woofer DW1421A Specifications : Response 50 Hz to 20,000 Hz Impedence-6.0 +/-0.9 Ohms Resonance Frequency-50Hz +/-15 Hz Power : Nominal-50 w,Maximum 100 w SPL-88+/-3 dB. Features : · Size-14 cm (51/2 Inch) · High Performance Cross Fibre Paper vaio cone with Quick edge · With Field cover For usage near screens · Superior Quality ,High Power, High Temperature resistant   Duraluminium Voice Coil · Weight-1140gm SPL Graph Construction Drawing Back