1,500W – 2,500W optimal power range 3.3 inch high temp voice coil Triple stack 378oz motor 58lb total weight 23.5mm Xmax Double high current tinsel leads Double blend material spider Designed for use in sealed enclosures. Engineered in the USA. ALL AUDIO DYNAMICS IS PICK UP INSTORE ONLY Description The 5000 series 12 employs a finely-tuned balance of damping and extensive motor force to achieve very high efficiency, offering exceptional versatility and unmatched performance in a variety of real-world functions. Fs 33.04 HzQms 7.12Vas 13.99 litersCms 0.047 mm/NMms 492.8 gRms 14.39 kg/sDia 241.4 mmSd 457.8 sq cm Qes 0.587Re 4.29 ohmsLe 4.931 mHZ 56.35 ohmsBL 27.35 Tm Qts 0.542no 0.0829%SPL 81.24 dBEBP 56.31 XMax 23.5mm Nominal Diameter 12inOverall Diameter 12.99in / 330mmMounting Hole Diameter 11.33in / 288mmBolt Hole Circle DiameterMotor Outer Diameter 7.87in / 220mmMounting Depth 8.9in / 228mmRequired Pole Vent ClearanceDriver Displacement 0.174 cu ft / 4.927 l Minimum Sealed Volume N/AMinimum Vented Volume cu ft / l net*