


Sundown Audio NS v6 18 Single Bundle (Baltic Birch)
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Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
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How this package ships
- Two separate deliveries. Your subwoofer ships from JS Ultimate Sounds and usually arrives first.
- Separate tracking numbers. You will get one for each delivery, so a tracking link showing only part of your order is normal.
- The enclosure is built to order by Basshead Supply and ships direct from them in about 2 to 3 weeks.
- The subwoofer is not pre-installed. You mount it in the enclosure once both have arrived.
- The enclosure arrives finished in a gray stain, ready to install.
What is included
- (1) Sundown Audio Nightshade NS-Series NS6 18" 3500W Subwoofer NS v.6
- (1) Sundown Audio NSV6 18" Single Ported Subwoofer Enclosure, Baltic Birch
Priced 10% below buying the subwoofer and enclosure separately.
Choose your impedance below.
Sundown Audio Nightshade NS-Series NS6 18" 3500W Subwoofer NS v.6
- Power — 3,500W RMS / 7,000W Peak
- Impedance — Dual 1-ohm or dual 2-ohm voice coils
- Voice Coil — Eight-layer voice coil
- Motor — Neodymium with extended shorting ring
- Cooling — Cast aluminum cooling ring and aluminum vent ring
This Listing Includes: (1) Sundown Audio Nightshade NS-Series NS6 18" Subwoofer NS v.6
The Nightshade Neodymium subwoofer is engineered for powerful low end, 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 for smooth, accurate sound at extreme SPL levels. A cast aluminum cooling ring, aluminum vent ring, and a unique air exchange system force hot air out and cool air in. The custom-tooled basket, ultra-linear spider packs, and Ultra-linear Mega Roll V2 surround keep cone motion controlled, with an optional carbon cone/dustcap available.
Features
- Eight-layer voice coil for excellent power handling
- Extended shorting ring to minimize distortion
- Unique air exchanging system forces hot air out and cool air in
- Cast aluminum cooling ring and aluminum vent ring
- Ultra-linear Mega Roll V2 surround
Specifications
| RMS Power | 3,500 watts |
| Peak Power | 7,000 watts |
| Impedance | Dual 1-ohm or Dual 2-ohm |
| Voice Coil | Eight-layer |
| Motor | Neodymium with extended shorting ring |
| Basket | Custom-tooled |
| Surround | Ultra-linear Mega Roll V2 |
Sundown Audio NSV6 18" Single Ported Subwoofer Enclosure
- Net Volume - 7.0 cu ft
- Tuning - 30.0 Hz
- Port Area - 101.25 sq in
- Sub Cutout - 16.69"
- Construction - 1" (24mm) plywood construction
This Listing Includes: (1) Basshead Supply ported enclosure for the Sundown Audio NSV6 18" subwoofer
This enclosure is custom built specifically for the Sundown Audio NSV6 18" subwoofer. Basshead Supply's Performance Series enclosures are subwoofer-specific boxes engineered for strong, clean output, built with a refined assembly process that leaves no visible screw holes. Every box is glued with Titebond III and internally braced, then pre-wired with a recessed satin-nickel binding post and OFC 10-gauge wire - built by hand in the USA. Custom built to order by Basshead Supply and shipped directly from them, about 2 to 3 weeks.
Features
- 1" (24mm) plywood construction
- 17 ply birch veneer construction
- Gray stained finish
- Refined assembly - no visible screw holes
- Glued with Titebond III and internally braced
- Pre-wired recessed satin-nickel binding post with OFC 10-gauge wire
- Built by hand in the USA
Specifications
| Net Volume | 7.0 cu ft |
| Tuning | 30.0 Hz |
| Port Area | 101.25 sq in |
| Port Dimensions | 18.0" x 5.625" |
| Sub Cutout | 16.69" |
| Construction | 1" (24mm) plywood construction |
| Finish | Gray stained finish |
| Wiring | Pre-wired metal binding post with 10ga OFC wire |
| Dimensions (HxWxD) | 20.0" x 39.875" x 25.125" |


