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NVX NE121P w/ Sundown Audio SW-SAV212D4

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/ 1000W RMS 12" SA Series 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_sav212d4
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List price $611.98
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$519.55

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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"

Sundown Audio SA-12 v.2 D4 12" (SA12V2D4)

2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer (SW-SAV212D4)
Quantity: 1

Product Details:

  • 12" Dual 4 ohm SA Series Subwoofer
  • Power Handling:
    • Peak: 2500 watts
    • RMS: 1250 watts
  • Competition Grade Paper Cone
  • Foam Surround
  • Vented magnetic gap and pole piece
  • Innovative high velocity, cast aluminum vented frame spacer ring
  • Magnet ID faraday ring for smooth acoustic response
  • Spring-loaded terminals for easy connection
  • Stitched-on double “XL” tinsel leads
  • 2.75" High Temperature Copper Voice coil on aluminum former
  • 19 mm Xmax
  • Double Stacked magnet motor structure
  • Resonance Frequency (Fs): 33.6039 Hz
  • Sensitivity: 85.03 dB
  • Recommended sealed box volume: 1.0 cubic feet
  • Recommended ported box volume: 1.75 cubic feet
  • Top-mount depth: 7.35"
  • Cutout diameter: 11.01"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually


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Specifications & Details


Subwoofer Specifications
Series
SA Series
Subwoofer Size
12"
RMS Power Handling
1000 watts
Woofer Composition
Competition Grade Paper
Woofer Surround
Foam
Sensitivity
85.03 dB
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Wood Thickness
3/4"
Number of Terminals
1
Terminal Type
Binding posts (banana clip ready)
Box Exterior Color
Black
Box Finish
Carpet
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

NVX

Model Number:

NE121P_SAV212D4

Weight:

66.40lbs

Internal SKU:

ne121p_sav212d4

Internal Product ID:

228909

Customer Ratings & Reviews


NVX NE121P w/ Sundown Audio SW-SAV212D4 thumbnail image

5 star
60%
4 star
20%
3 star
20%
2 star
0%
1 star
0%



Durability
4.3
Value
5
Features
5
Design
5
Usability
4.5

Customer Reviews

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Great subs

The following review is for SAV212D4, which is a part of the bundle you are viewing.

Sounds awesome

By Clint on May 28, 2026 Checkmark Icon Verified purchase
2016 Mitsubishi Outlander Sport


Best money spent

The following review is for SAV212D4, which is a part of the bundle you are viewing.

I wish I would had spent the money the first go around. These subs are amazing. I highly recommend these. The slam I only have my amp turned up half way bass settings on low and the are ridiculously loud.

By Michael on April 17, 2026 Checkmark Icon Verified purchase
2009 Chevrolet Impala


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
2010 Honda Odyssey


First time buying Sundown. .

The following review is for SAV212D4, which is a part of the bundle you are viewing.

I have always used skar products but I decided to spend more money on higher end stuff . These sa v2 12s hit so hard on my jp 23 v2!!!

By Jesse on February 23, 2026 Checkmark Icon Verified purchase
2023 Kia Forte




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