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NVX NE121P w/ NVX SMW12D4

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/ 12" Dual 4-Ohm Subwoofer

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• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

Learn more about the ne121p_smw12d4
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Universal – fits most vehicles.

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List price $251.98
Thanks , You Pay:

$246.94

 with warranty
Starting at $23/mo or 4 payments of $62 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

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Description


NVX brand icon

Authorized dealer

NVX NE121P

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo
Quantity: 1

Product Details:

  • Not compatible with NVX VC-Series Subwoofers
  • 12" Single Ported Subwoofer Enclosure
  • Made from 3/4" Medium Density Fiberboard (MDF) construction
  • Built with precision CNC technology for exceptional accuracy
  • Pre-lined with Poly-Fil for improved acoustic response
  • Premium Black Carpet with Black NVX Logo
  • Spring Loaded Push Terminals
  • Maximum subwoofer mounting depth: 13-7/8"
  • Subwoofer cutout diameter: 11-7/32"
  • Internal box volume: 1.75 cubic feet
  • Dimensions: 16.50" D x 20.00" W x 16.00" H
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Port Specifications:

  • Tuning Frequency: 38 Hz
  • Port Width: 1.5"
  • Port Height: 14.50"
  • Port Length: 17.52"

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

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Item Details


Manufacturer:

NVX

Model Number:

NE121P_SMW12D4

Weight:

41.00lbs

Internal SKU:

ne121p_smw12d4

Internal Product ID:

228951

Customer Ratings & Reviews


NVX NE121P w/ NVX SMW12D4 thumbnail image

5 star
67%
4 star
22%
3 star
11%
2 star
0%
1 star
0%



Durability
3.7
Value
5
Features
4.9
Design
4.9
Usability
4.7

Customer Reviews

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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


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


Nice sounding box but abit tall.

The following review is for NE121P, which is a part of the bundle you are viewing.

Great sturdy box, carpeting was nicest done only thing i disliked about it was its hight it too tall my trunk is 14.75. But this thing is 16" tall had to cuz the foam that was under the mat to make it barely fit and also re.oved the back seat...it was worth it though, im running a rf-p3d2 12"

By robinson on February 27, 2026 Checkmark Icon Verified purchase
2023 Toyota GR86


The following review is for NE121P, which is a part of the bundle you are viewing.
By Austin on February 26, 2026 Checkmark Icon Verified purchase
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The following review is for SMW12D4, which is a part of the bundle you are viewing.
By Chris on October 31, 2024 Checkmark Icon Verified purchase


The following review is for SMW12D4, which is a part of the bundle you are viewing.
By Jeff on September 9, 2024 Checkmark Icon Verified purchase




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