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NVX NPKG212 Dual 12" Bass Package

1000W Max (500W RMS) Loaded Dual 12" Sub Bass Kit with Slot Ported Box, Monoblock Amp & Remote

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• 12" Loaded Dual Subwoofer Enclosure with Amplifier
• 500 watts RMS
• Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

Learn more about the npkg212
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List price $419.99
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Product Highlights


• 12" Loaded Dual Subwoofer Enclosure with Amplifier
• 500 watts RMS
• Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

Description


NVX brand icon

Authorized dealer

2-Way 6.5 Inch Coaxial Speakers
Woven Tinsel Leads 25 MM Tweeter Rubber Surround
Carbon Fiber Cone

Package Features:

  • Dual 12" Ported Loaded Subwoofer Enclosure with Amplifier
  • 1000W Max (500W RMS) Class D Monoblock Amplifier
  • Includes Remote Bass Level Controller
  • Precision-engineered CNC Ported MDF Enclosure
  • Works with Both Factory and Aftermarket Audio Systems
  • 8 AWG Gauge Power and Ground Wiring is Recommended for Installation
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Features:

  • 12" Single Voice Coil 4-Ohm Subwoofers
  • Non-Pressed Paper Cone
  • High Roll Foam Surround with Black Stitching
  • 2.0" High Temperature Voice Coil
  • Ferrite Magnet Motor Structure
  • Frequency Response: 20 - 200 Hz
  • Sensitivity: 87 dB

Amplifier Features:

  • Class D Monoblock Amplifier
  • RMS Power Rating:
    • Peak: 1000 watts
    • RMS: 500 watts
  • Low-Pass Crossover Frequency: 40 - 200 Hz
  • Bass Boost: 0 - 12 dB
  • Subsonic Filter: 20 - 50 Hz
  • RCA Preamp Output: 1 pair
  • Input sensitivity: 100mV - 6 volts
  • Fuse Rating: 40A x 2 
  • Includes Remote Bass Level Controller

Enclosure Features:

  • Preloaded Dual 12" Slot Ported Enclosure
  • 3/4 MDF (Medium Density Fiberboard) Construction
  • Total Box Volume: 2.50 cubic feet
  • Tuning Frequency: 30 Hz
  • Black Carpet with Black NVX Stitched Logo
  • Spring Loaded Push Terminals
  • Final Impedance: 2-ohm
  • Enclosure Dimensions: 31.89" L x 14.57" W x 14.96" H

Frequently Asked Questions (FAQ)


Verify the speaker wires are connected to the spring terminals on the box and the amp's output. If secure, check the Remote Bass Knob. If the knob is plugged in but turned all the way down, the amp will output zero signal to the subs.
This is often caused by voltage drop or a bad ground. Ensure your 8-gauge ground wire is under 3ft and bolted to bare, unpainted chassis metal. If grounded to a seat bolt or over paint, the amp will starve for power and shut down.
Check the Gain and LPF settings on the amp. If using a factory radio via high-level inputs, ensure the "Input Level" switch is set correctly. If the Gain is too low or the LPF is set below 50Hz, the subs will receive almost no audible signal.
This is a sign of signal clipping. If the "Bass Boost" is maxed out or the "Gain" is set too high, the amp produces a distorted "square wave" that generates extreme heat. Turn these down immediately to prevent burning the voice coils.
Due to the ported design's high output, use sound dampening material (like NVX SD10) on your trunk lid and license plate. Ensure the box is pushed firmly against the rear seat or secured with brackets to prevent it from sliding and hitting the trunk walls

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Specifications & Details


Series
Series
E-Series
Subwoofer Amplifier Power Specifications
RMS Power @ 4 ohms
350 watts x 1 channel
RMS Power @ 2 ohms
500 watts x 1 channel
Peak Power Output
1000 watts x 1 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Maximum Input Gauge Size
8 AWG
THD at Rated RMS Power
>1%
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Subsonic
Low-Pass Crossover Frequency
40 - 200 Hz
Subsonic Filter
20 - 50 Hz
Signal-to-Noise Ratio
98 dB
Low-Level Input Sensitivity
100mV - 6 volts
Bass Boost
0 - 12 dB
Remote bass/level controller
Yes
Fuse Rating
40A x 2 
CEA-2031 Compliant
Yes
Subwoofer Specifications
Subwoofer Size
12"
RMS Power Handling
250 watts
Total RMS Power Handling
500 watts
Peak Power Handling
500 watts
Total Peak Power Handling
1000 watts
Woofer Surround
High Roll Foam
Woofer Composition
Non-Pressed Paper
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Voice Coil Material
Aluminum
Voice Coil Diameter
2.0"
Magnet Type
Ferrite
Sensitivity
87 dB
Frequency Response
20 - 200 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported
Number of Subwoofers
2
Box Style/Shape
Square/Rectangle
Total Box Volume
2.50 cubic feet
Height
14.96"
Width
14.57"
Wood Thickness
3/4"
Number of Terminals
1
Box Exterior Color
Black
Box Finish
Carpet
Tuning Frequency
30 Hz
Final Wired Impedance
2-ohm
Amplifier Wiring Kit
Is Amplifier Wiring Kit included?
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

NPKG212

Weight:

69.22lbs

Internal SKU:

npkg212

Internal Product ID:

204281

Product and How-to Videos


Customer Ratings & Reviews


NVX NPKG212 Dual 12

5 star
82%
4 star
18%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
5
Features
5
Design
4.9
Usability
5

Customer Photos & Videos


Customer Reviews

Sort by:

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Teeth Rattler

It's big. If you have the space in your trunk and not a ton of money, buy this. I just measured this package and it hits real hard around 30-40hz. I highly recommend it if you're on a budget and want huge bass. Especially considering the amp is also included. Awesome package. Keep it up, NVX.

I have to give it to Sonic as well. This shipped faster than Amazon and they kept me updated along the way.

By Moletheus on January 18, 2025 Checkmark Icon Verified purchase

13 found this helpful


Great “Bang” for the buck!!!

I got this for my son’s 2007 Cobalt. First off it’s a beautiful well made box with sleek/classy looking subs and the logo embroidered on top was a nice touch. The box is a bit on the large side, we had to remove rear seat and backs and go in the trunk that way to get it to fit but no biggie. The amp was simple, classy and fairly compact. Runs cool and pushes the subs perfectly. This system absolutely slams when you get it tuned up right!!! Definitely hits hard for a 500 watt system.

By Eric on March 20, 2025 Checkmark Icon Verified purchase

10 found this helpful


Awesome Price to Performance

I recently installed these in a 03 pontiac vibe matched with door speakers and tweeters. Tuned at 50hz -5db with a kicker test tone. This package performs very well for the size of the vehicle offering enough true low end bass at a fraction of the cost. My one complaint remains in the fit and finish. around the left side of the port as soon as she started receiving signal the carpet began to flay itself off the box. Picked up some Titebond III to resolve the issue. Amp stays nice and cool and was straight forward to wire. its more compact then expected saving me room to top mount both amps. overall id give it a 4 out of 5. if your not an audiophile this is a great beginner option offering true mid range quality when paired with a full system. :)

By sadie on April 6, 2025 Checkmark Icon Verified purchase

8 found this helpful


Nice set of subs with the box.

Easy way to add quick good sounding bass. Won't blow your ears off but sounds really good.

By jon on March 30, 2025 Checkmark Icon Verified purchase

7 found this helpful


Gamechanger for my Tesla Y.

OK so first things first. I got a Tesla Y 2024. I started to go buy the BOOST Kit from NVX; however, it didn't fit so the team at Sonic install bay recommended putting this in until they release a new version of the BOOST. The thing is -- I may never switch to the BOOST even if it does get released because the bass I get from this brings me back to why I LOVE car audio. It's unreal. Clear, loud, and just amazing! It especially is great with the Y because I still have a lot of space and access to the floor board area and both left/right cubbies. Also, because it's an SUV and not a sealed trunk the bass is incredible. My setup is a little different too than most NPKG212 because they gave me a VADM1 to power it instead of the amp that comes with it. They said either way it would sound the same. Thank you Sonic and Hunter.

By Nate on July 14, 2025

1 found this helpful


Crazy bass at low price

Received today so mind you not a long term review but the quality seems very good and I have no doubts these will last a long time. First off the box and subs look very nice with a clean minimal look and sleek black branding. The box seems to be very high quality made with nice thick material and carpeted very nicely. The amplifier is all metal and has a good weight to it with nice terminals for wiring. The included bass knob has a green led so you can see when the amp has power and has a nice tactile click when you turn it and can control from what seems to be all the way off and all the way to trunk rattling bass. Now the main thing sound quality... these things get super low playing those bass notes you can feel more than you can hear which create some serious pressure in your ears. Comparing to a more expensive setup I've heard in a friend's car with 2 10inch skar subs on a 1200 watt rms amp these get very close to the same level of noise I would say but seem to be more accurate of a sound coming from these nvx. These things bump way more than I expected for a 500watt setup. If you have the room for these I think it might be the best setup for the price and I really like how its only 500 watts so you should have no problem running this on a stock electrical setup and you only need 8 gauge wire which is small and easy to run and saves you even more money.

By Elliot on February 18, 2026 Checkmark Icon Verified purchase


Good but don't abuse

I like how they sounded but I am still new to the audio scene so I don't have much to go based off of. Keep in mind these are budget so make sure you tune your stuff correctly and don't push them too hard like I did. The only thing was the fabric at the exit of the port coming off as soon as I got them.

By Brayan on February 8, 2026 Checkmark Icon Verified purchase


By Robert on January 14, 2026 Checkmark Icon Verified purchase


Great Value!

I can't believe how affordable this bundle is.... I've had other brands pre built subwoofer enclosure and I can gladly say that this bundle has one of the most solid built I've ever owned. Blown away by the quality of the bass being put out by these subwoofers. I mounted the amp behind the backseat and it hasn't gotten hot.

By Reginald on November 6, 2025 Checkmark Icon Verified purchase
2024 Volkswagen Tiguan


By Andres on November 3, 2025 Checkmark Icon Verified purchase




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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.