Sundown Audio NS v5 18 D2 18" NightShade 3000W RMS Dual 2-Ohm Subwoofer

NS-18 V.5 D2 - Sundown Audio 18" 3000 Watt RMS Dual 2-Ohm Nightshade V.5 Series Subwoofer

The NS v.5 is the absolute top-tier driver in Sundown's "ultra-high excursion" sub-woofer lineup with a 3” coil. All models (10,12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, D691598, and D741841). Our proprietary frames allow 4” or more of peak-to-peak mechanical excursion.

From here the NS (Nightshade) line diverges dramatically from our other lines. The motor is based on our patented S.A.I.N.T. (Sundown Audio Intelligent Neodymium Technology) Design (US Patent Numbers US10382874B2 and USD791740S1). As of the release of the NS v.4/v.5 series these are the only products in our line to utilize this all new and proprietary design.

The Nightshade v.5 features an enormous 45mm (1.77”) magnetic gap to ensure the coil is always under control. This motor drives a 3" diameter 8-Layer Flat Wire Aluminum Coil with an extremely long winding (3.15” long) wound on a thick aluminum former to incredible levels of excursion.

Power Handling: 3000 Watts RMS
Xmax = 40mm one-way by 70% BL
Patented S.A.I.N.T. Motor Design – Sundown Exclusive
Radially vented magnetic gap
Spring Loaded Terminals
Solid Pole-Piece with Four Vent Channels
Innovative high-velocity cast-aluminum vented frame spacer ring
Thermally conductive, Aluminum top-gap plate
Black aluminum 3 inch 8-layer voice coil
Mega-Roll v.2 surround
Custom tooled basket
Large aluminum Faraday (shorting) Ring (over 2 lbs)
Stitched-On XL Tinsel Leads to prevent fatigue and failure
Custom-tooled ultra-linear spider packs

Weight: 75LB

Features & Specifications:
Sundown Audio NS-18 V.5 D2 3000W RMS Dual 2-Ohm Subwoofer
DC Resistance (Re): 1.3 Ω
Resonance Frequency (Fs): 30.89 Hz
Equivalent Volume (Vas): 97.43 L
Electrical Q Factor (Qes): 0.421
Mechanical Q Factor (Qms): 4.5169
Total Q Factor (Qts): 0.3853
Voice Coil Inductance (Le): 1.049 mH
Force Factor (BL): 17.36 NA
Moving Mass (incl. Air Load) (Mms): 502.85 g
Suspension Compliance (Cms): 52.76 μm/N
Sensitivity: 90.08 dB 1w / 1m

Box Recommendations:
Sealed: N/A
Ported: 7.00 cu. ft.
Displacement: TBA
Depth: 12.75
Outside Diameter: 18.42 in
Cutout Diameter: 16.69 in
Recommended Tuning: 32 Hz
Recommended Port Area: 112 sq. in