Nightshade NS-Series NS6 15" 3000W Subwoofer NS v.6

3,000-Watt RMS Dual 1 or 2 ohm voice coils Optional carbon cone/dustcap available Custom tooled basket Custom-tooled ultra-linear spider packs Extended shorting ring Eight-layer voice coil Custom tooled basket Cast aluminum cooling ring Ultra-linear spider pack Unique air exchanging system forces hot air out and cool air in Aluminum vent ring Ultra-linear Mega Roll V2 surround  Features: The Nightshade 3,000-watt Neodymium sub is engineered to deliver incredibly powerful low end, with an extremely linear excursion and next-level thermal management. It features an eight-layer voice coil for excellent power handling and an extended shorting ring to minimize distortion and deliver a smooth, highly accurate sound at extreme SPL levels. Specifications: NS V.6 15 RE (Ohms) 1.8398 3.5978 FS (Hz) 30.5930 30.8881 VAS (L) 37.0627 36.0601 Qes 0.4382 0.4133 Qms 5.3509 5.4272 Qts 0.4050 0.3841 Le (mH) 1.6641 3.4904 BL (NA) 21.1132 30.6711 Mms (Grams) 552.2849 556.