300W – 600W optimal power range Dual 2 ohm voice coil 2.5 inch Copper voice coil 160oz motor 15mm Xmax Double high current tinsel leads PC spider Designed for use in vented enclosures. Engineered in the USA. Also available in D2 Description The 2500 series 10 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 38.66 HzQms 4.971Vas 17.22 litersCms 0.102 mm/NMms 165.5 gRms 8.119 kg/sDia 209.5 mmSd 344.8 sq cm Qes 0.6583Re 3.646 ohmsLe 3.114 mHZ 31.18 ohmsBL 23.84 TmBL^2/Re N^2/W Qts 0.5813no %SPL 83.8 dBEBP XMax 15.0mm Nominal Diameter 10inOverall Diameter 10.82in / 275mmMounting Hole Diameter 9.33in / 237mmBolt Hole Circle DiameterMotor Outer Diameter 6.29in / 160mmMounting Depth 3.74in / 95mmRequired Pole Vent ClearanceDriver Displacement 0.049 cu ft / 1.392 l Sealed Volume 0.50 – 0.60 cu.ft.Vented Volume 0.60 – 1.25 cu.ft. net * Tune for desired response