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NVX SMW12D4

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer

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• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.82"
• Sensitivity: 88 dB

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List price $131.99
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Choose from any of our many bundles that include this product for even more savings!

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Current Promotions (2 offers)


Save 50% Off on a roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

NVX SMW12D4

50% off


Priced separately $122 98

Promo Savings of $6 50

Total price:

$116 48

Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

NVX SMW12D4

100% off


Priced separately $122 98

Promo Savings of $12 99

Total price:

$109 99

Product Highlights


• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.82"
• Sensitivity: 88 dB

Description


NVX brand icon

Authorized dealer

400W 12 Inch Shallow Mount Subwoofer
Depth Extension Plate Shallow Mount Design Push Terminals
Polypropylene Cone

Product Details:

  • 12" Dual 4 ohm S Series Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Carbon Fiber Reinforced Polypropylene Cone
  • Butyl Rubber Surround
  • 2.5" High-Temperature Aluminum Voice coil
  • 8 mm Xmax
  • 53 oz. Single Stacked High Energy Y30 Ferrite magnet
  • Includes depth extension plate for extremely shallow boxes
    • Mount the plate over a cutout in the box to gain extra subwoofer depth
  • Versatile shallow mounting depth design
  • Chrome-plated, spring loaded push terminals for secure connection
  • Frequency Response: 25 - 350 Hz
  • Resonance Frequency (Fs): 29.1 Hz
  • Sensitivity: 88 dB
  • Optimal sealed box volume: 1.2 cubic feet
  • Optimal ported box volume: 1.75 cubic feet
  • Top-mount depth: 3.82"
  • Cutout diameter: 11.11"
  • CTA-2031 Compliant
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

pdf icon NVX SMW12D4 Manual

Frequently Asked Questions (FAQ)


Both S-series and SQ-series subwoofers are categorized as shallow-mount subwoofers. However, SQ Series is designed for higher power and more precise bass, while the S Series is a more budget-friendly entry-level shallow option.
Shallow doesn’t have to mean weak. SMW124 uses a non-pressed paper cone and high roll surround to maintain a low resonant frequency. It hits the gut-punch notes that other shallow subs usually miss entirely.
Not at all. Despite its relatively thin build, you need to have an external monoblock amp to move the 300W RMS motor. Stock power would destroy the subwoofer.
Tight boxes are heat traps. NVX added a vented pole piece to help the 2" coil breathe. Just ensure the back of the magnet has at least an inch of clearance so the vent can actually exhale hot air. Don't choke your bass!
If you have 6 inches of depth, go with NSW102/NSW8104. If you have 4 inches, SMW124 is your savior. This subwoofer is designed to fit in tight spaces without the weak performance of generic budget shallow subs.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 NVX SMW12D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 NVX SMW12D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 NVX SMW12D4 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 NVX SMW12D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
S Series
Subwoofer Size
12"
Peak Power Handling
800 watts
RMS Power Handling
400 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Material
Aluminum
Voice Coil Diameter
2.5"
Frequency Response
25 - 350 Hz
Sensitivity
88 dB
Xmax (millimeters)
8 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Carbon Fiber Reinforced Polypropylene
Woofer Surround
Butyl Rubber
Magnet Structure
Single Stacked
Magnet weight
53 oz.
Magnet Type
Ferrite
Subwoofer Grille
Optional (Accessory required and sold separately)
Re-Cone Kit Available
No
CTA-2031 Compliant
Yes
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
1.2 cubic feet
Optimum Ported Box Volume
1.75 cubic feet
Top-Mount Depth (Mounting Depth)
3.82"
Cutout Diameter
11.11"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
29.1 Hz
Equivalent Compliance (Vas)
64.86 liters
Total Speaker Q Value (Qts)
0.5734
Electrical Q Value (Qes)
0.6448
Electrical Resistance of Voice Coil (Re)
6.4 ohm
Mechanical Q Value (Qms)
5.1827
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

SMW12D4

Weight:

11.00lbs

Internal SKU:

smw12d4

Internal Product ID:

186703

Product and How-to Videos


Customer Ratings & Reviews


NVX SMW12D4 thumbnail image

5 star
86%
4 star
14%
3 star
0%
2 star
0%
1 star
0%



Durability
3.8
Value
5
Features
4.8
Design
4.8
Usability
5

Customer Reviews

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Amazing Shallow Sub

These sound killer. Worked perfect for my C10. Amazing freq response with tons of headroom. Big bang for your buck

By nick on June 3, 2023 Checkmark Icon Verified purchase

34 found this helpful


So far very impressed

So far very impressed, bought with the Atrend 12tk shallow truck enclosure bundle for Black Friday, at a total of only $120, it’s great so far. Installed it behind the rear seats in my 1995 f350 crew cab, paired with a Skar amp. So budget friendly was the goal. It sounds amazing, very clean and crisp, and hits way harder than I was expecting. Build quality seemed great, especially for the price. So far so good! Give it a shot if you’re in the market for a shallow mount subwoofer! Wont be disappointed.

By Christopher on December 4, 2022 Checkmark Icon Verified purchase

34 found this helpful


Little Sub that could

Needed a sub for my Nissan Hardbody. Very limited on space in a single cab. Mated with Skar 350 mono in a sealed box & it’s like a concert inside. Bass drops & plays any genre with clarity. Would definitely recommend.

By Tone on June 4, 2023 Checkmark Icon Verified purchase

28 found this helpful


By Miguel on February 25, 2024 Checkmark Icon Verified purchase

16 found this helpful


By David on April 15, 2024 Checkmark Icon Verified purchase

8 found this helpful


By Chris on October 31, 2024 Checkmark Icon Verified purchase


By Jeff on September 9, 2024 Checkmark Icon Verified purchase




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