2,000W – 4,000W optimal power range 4 inch flat wire high temp voice coil Triple stack 500oz motor 84lb total weight 23.5mm Xmax Double high current tinsel leads Triple blend material spider Designed for use in vented enclosures. Engineered in the USA. Available in Dual 1ohm and Dual 2ohm Sold individually Description This is an SPL driver. Rather than broad (musical) range, it is optimized for high “one note” performance in small to medium size competition-style vented enclosures. Dual 1ohm Fs 32.9 HzQms 5.401Vas 12.23 litersCms 0.0407 mm/NMms 575 gRms 22.01 kg/sDia 242 mmSd 460 sq cm Qes 0.591Re 2.00 ohmsLe mHZ ohmsBL 20.05 TmBL^2/Re N^2/W Qts 0.533no 0.071 %SPL 80.5 dBEBP Dual 2ohm Fs 34.54 HzQms 4.591Vas 12.61 litersCms 0.042 mm/NMms 505.8 gRms 23.91 kg/sDia 242.000 mmSd 460.00 sq cm Qes 0.738Re 4.00 ohmsLe mHZ ohmsBL 24.39 TmBL^2/Re N^2/W Qts 0.636no 0.0679 %SPL 80.3 dBEBP XMax 23.5mm Nominal Diameter 12inOverall Diameter 12.99in / 330mmMounting Hole Diameter 11.33in / 288mmBolt Hole Circle DiameterMotor Outer Diameter 9.8in / 250mmMounting Depth 9.44in / 240mmRequired Pole Vent ClearanceDriver Displacement 0.257 cu ft / 7.27 l Minimum Sealed Volume N/AMinimum Vented Volume cu ft / l net*