Nightshade NS-Series NS6 18" 3500W Subwoofer NS v.6

3500 Watt RMS / 7000 Watt Peak 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  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 18 RE (Ohms) 1.8090 3.6629 FS (Hz) 28.6283 28.3677 VAS (L) 78.9335 82.9318 Qes 0.4955 0.4948 Qms 5.2141 5.1127 Qts 0.4525 0.4511 Le (mH) 1.7089 3.3898 BL (NA) 21.7903 30.4106 Mms (Grams) 72