Sundown Audio NS-Series NS6 Version 6 18" 3000W RMS 1 Ohm Power Car Subwoofer

Sundown Audio NightShade NS-Series 18-inch Dual 1 Ohm Voice Coils Car Subwoofer
Model: NS V.6 18
SOLD INDIVIDUALLY

FEATURES
3,000-Watt RMS
Dual 1 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

SPECIFICATIONS
RE (Ohms): 1.8090
FS (Hz): 28.6283
VAS (L): 78.9335
Qes: 0.4955
Qms: 5.2141
Qts: 0.4525
Le (mH): 1.7089
BL (NA): 21.7903
Mms (Grams): 722.9906
Cms (uM/N): 42.7481
Sens (dB @ 1w/1m): 87.4738
Xmax: 35mm

ENCLOSURE SPECIFICATIONS RECOMMENDATION
Sealed Enclosure: Not Recommended
Ported Enclosure: 7 cu.ft. net
Recommended Tuning: 32Hz
Recommended Port Area: 100 sq.in.
Displacement: .27 cu. ft. 
Depth: 16.30"
Outside Diameter: 18.62"
Cut-Out: 16.69"