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NVX SMW12D4 + 12" Sealed Truck Style Enclosure

400W RMS Shallow-Mount 12" Dual 4-Ohm Subwoofer + Belva 12" Truck Style Enclosure

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• 800 watts Watts Peak
• 400 watts Watts RMS
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Includes Depth Extension Clearance Plate
• Mounting Depth: 3-15/16"

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2026-07-27 11:08:20
List price $231.98
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$139.99

 with warranty
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Description


NVX brand icon

Authorized dealer

NVX SMW12D4

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer
Quantity: 1

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

Atrend 12TK

Empty Single 12" Truck Sealed Subwoofer Enclosure
Quantity: 1

Product Details:

  • 12" Single Truck Sealed Subwoofer Enclosure
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Universal truck (wedge) enclosure design
  • Mitered edge construction provides cleaner finish
  • Miter joints feature over 41% more surface area
  • More surface area translates into a stronger bond
  • Dado joints offer an 80% increase in surface area
  • Built using trick glue for up to 3600 PSI holding ability
  • Glued and braced with fasteners for added strength
  • Premium black carpeted finish for sleek modern look
  • Silver spring-loaded terminal push cups
  • Maximum subwoofer mounting depth: 4.15"
  • Subwoofer cutout diameter: 11.13"
  • Total box volume: 0.27 cubic feet
  • Dimensions: 20" L x 15-3/4" H x 5-1/4" W x 8-1/2" W2
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

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• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

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Specifications & Details


Subwoofer Specifications
Series
S Series
Subwoofer Size
12"
RMS Power Handling
400 watts
Peak Power Handling
800 watts
Woofer Composition
Polypropylene
Woofer Surround
Butyl Rubber
Sensitivity
88 dB
Frequency Response
25 - 350 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Sealed
Number of Subwoofers
1
Box Style/Shape
Truck Style, Slim with Angled Front
Wood Thickness
5/8"
Number of Terminals
1
Terminal Type
Binding posts
Box Exterior Color
Black
Box Finish
Carpet
Second Width
5-1/2"
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

SMW12D4_1TRUCK12

Weight:

27.00lbs

Internal SKU:

smw12d4_1truck12

Internal Product ID:

198631

Customer Ratings & Reviews


NVX SMW12D4 + 12

5 star
83%
4 star
17%
3 star
0%
2 star
0%
1 star
0%



Durability
4.3
Value
4.7
Features
4.9
Design
4.9
Usability
5

Customer Reviews

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Excellent!

The following review is for 12TK, which is a part of the bundle you are viewing.

Very well built. Looks nice. Great value. Sonic shipped fast.

By DR on October 31, 2014

70 found this helpful


Amazing Shallow Sub

The following review is for SMW12D4, which is a part of the bundle you are viewing.

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

The following review is for SMW12D4, which is a part of the bundle you are viewing.

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


Great buy

The following review is for 12TK, which is a part of the bundle you are viewing.

Functions well with minimal space. Fits subs well built very well no crack unsealed

By Austin on March 24, 2018

33 found this helpful


good product

The following review is for 12TK, which is a part of the bundle you are viewing.

project nice built speaker box it's nice day in my susan Isuzu single cab will fit up 12 inch subwoofer up to 6 inches deep

By pat on January 4, 2016

33 found this helpful


Little Sub that could

The following review is for SMW12D4, which is a part of the bundle you are viewing.

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


The following review is for SMW12D4, which is a part of the bundle you are viewing.
By Miguel on February 25, 2024 Checkmark Icon Verified purchase

16 found this helpful


The following review is for SMW12D4, which is a part of the bundle you are viewing.
By David on April 15, 2024 Checkmark Icon Verified purchase

8 found this helpful


The following review is for 12TK, which is a part of the bundle you are viewing.
By jerry on April 8, 2024 Checkmark Icon Verified purchase

8 found this helpful


The following review is for 12TK, which is a part of the bundle you are viewing.
By Ricky on October 17, 2025 Checkmark Icon Verified purchase



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