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NVX QB12SPA Amplified Subwoofer Enclosure and XKIT82 Amp Kit

1200W Single 12" Amplified Subwoofer Enclosure with Bass Knob and 8 Gauge 100% OFC Complete 2-Channel Amplifier Wiring Kit with RCA

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  • NVX QB12SPA 1200W Max Single 12-Inch Amplified Subwoofer Enclosure
  • Integrated 350W RMS Class D Amplifier with Ported Design
  • Includes Wired Remote Bass Knob for Easy Level Control
  • Full Spec 8 Gauge 100% Oxygen Free Copper Wiring Kit
  • Complete 2-Channel Installation Hardware with RCA Cables
Learn more about the qb12spa_xkit82
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2026-07-27 11:08:20
List price $791.94
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$559.96

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Description


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Authorized dealer

Transform your vehicle's sound with the NVX QB12SPA Amplified Subwoofer Bundle, a powerful all-in-one bass solution. This package features a Single 12-inch Ported Loaded Enclosure with a built-in amplifier delivering 1200W Max (350W RMS) power for deep, impactful low-end performance. Take full control of your audio from the driver's seat using the included remote bass knob, allowing for precise real-time adjustments. To ensure maximum efficiency and signal clarity, this kit includes a Full Spec 8 Gauge 100% Oxygen Free Copper wiring kit. This complete bundle provides everything needed for a high-performance installation, combining heavy-duty power delivery with a space-saving, high-output subwoofer design.

NVX QB12SPA

1200W Peak (350W RMS) Single 12" Amplified Ported Loaded Subwoofer Enclosure with Remote Bass Knob
Quantity: 1

General Features:

  • Single 12" Ported Loaded Subwoofer Enclosure with Built-In Amplifier
  • Power Handling:
    • Peak: 1200 watts
    • RMS: 350 watts
  • Built-in Class D amplifier
  • Includes Remote Bass Level Controller
  • Pre-installed Black Metal Grille
  • Precision-engineered CNC Ported MDF Enclosure
  • 8 AWG gauge power and ground wiring is recommended for installation
  • Works with Both Factory and Aftermarket Audio Systems
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Features:

  • 12" Single Voice Coil 2-Ohm Subwoofer
  • Injection Molded Polypropylene Cone
  • Rubber Surround
  • Ferrite Magnet Motor Structure
  • Frequency Response: 20 - 250 Hz

Amplifier Features:

  • Class D Monoblock Amplifier
  • Low-Pass Crossover Frequency: 50 - 250 Hz
  • RCA Preamp Inputs
  • Speaker-level (high-level) inputs
  • Input sensitivity: 100mV - 6 volts
  • Removable Power Plug
  • Fuse Rating: 30A x 1 

Enclosure Features:

  • Preloaded Single 12" Slot Ported Enclosure
  • 3/4 MDF (Medium Density Fiberboard) Construction
  • Black Carpet with Black NVX Stitched Logo
  • Enclosure Dimensions: 23.62" L x 6.10" W x 15.20" H

NVX QB12SPA

1200W Peak (350W RMS) Single 12" Amplified Ported Loaded Subwoofer Enclosure with Remote Bass Knob
Quantity: 1

General Features:

  • Single 12" Ported Loaded Subwoofer Enclosure with Built-In Amplifier
  • Power Handling:
    • Peak: 1200 watts
    • RMS: 350 watts
  • Built-in Class D amplifier
  • Includes Remote Bass Level Controller
  • Pre-installed Black Metal Grille
  • Precision-engineered CNC Ported MDF Enclosure
  • 8 AWG gauge power and ground wiring is recommended for installation
  • Works with Both Factory and Aftermarket Audio Systems
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Features:

  • 12" Single Voice Coil 2-Ohm Subwoofer
  • Injection Molded Polypropylene Cone
  • Rubber Surround
  • Ferrite Magnet Motor Structure
  • Frequency Response: 20 - 250 Hz

Amplifier Features:

  • Class D Monoblock Amplifier
  • Low-Pass Crossover Frequency: 50 - 250 Hz
  • RCA Preamp Inputs
  • Speaker-level (high-level) inputs
  • Input sensitivity: 100mV - 6 volts
  • Removable Power Plug
  • Fuse Rating: 30A x 1 

Enclosure Features:

  • Preloaded Single 12" Slot Ported Enclosure
  • 3/4 MDF (Medium Density Fiberboard) Construction
  • Black Carpet with Black NVX Stitched Logo
  • Enclosure Dimensions: 23.62" L x 6.10" W x 15.20" H

NVX XKIT82

Full Spec 8 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts
Quantity: 1

Product Details:

  • 8 Gauge 2-Channel X-Series Complete Amplifier Installation Kit
  • Designed for car audio systems up to 800 watts RMS
  • Made from 100% Oxygen-Free Copper (OFC)
  • Tinned conductors for corrosion resistance
  • Pre-installed black nylon mesh covering protects the power wire from damage
  • Solid brass and satin chromed ANL/Mini-ANL fuse holder offers ideal protection for high-powered systems
  • Pre-terminated seamless power and ground ring terminals provide reliable performance
  • Full spec power and speaker wire meet or exceed American Wire Gauge standards
  • CEA-2015 and BC5W2 compliant
  • V-Series RCA Interconnect Cable
  • Shielded noise-rejecting coaxial construction provides protection against interference
  • Split-tip silver-plated ends offer high-quality performance
  • Molded ends equipped with colored channel identifiers for easy recognition
  • Twisted-pair construction featuring two conductors per channel
  • Includes an assortment of wire termination hardware and cable ties
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Kit includes:

  1. 17 ft. Frosted Blue 8 gauge power wire with seamless crimp ring terminal
  2. 3 ft. Frosted Black 8 gauge ground wire with seamless crimp ring terminal
  3. 17 ft. Clear 18 gauge remote lead wire
  4. 20 ft. Frosted Black/Blue 16 gauge speaker wire
  5. One 16.4 ft. 2-channel dual twisted construction RCA interconnect Cable (NVX XIV25)
  6. One NVX XMANL04 ANL/Mini-ANL Fuse Holder with 60 amp Mini-ANL fuse
  7. One Black rubber firewall grommet
  8. Two 8 Gauge Nickel Plated spade terminals
  9. Four 18 Gauge Spade terminal
  10. Two 18 Gauge Red butt connectors
  11. Four 16 Gauge quick disconnect
  12. Five 16 Gauge Nickel Plated spade terminals
  13. Two Heat Shrink tubes with the NVX logo
  14. Ten 6" Black zip ties

NVX XKIT82

Full Spec 8 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts
Quantity: 1

Product Details:

  • 8 Gauge 2-Channel X-Series Complete Amplifier Installation Kit
  • Designed for car audio systems up to 800 watts RMS
  • Made from 100% Oxygen-Free Copper (OFC)
  • Tinned conductors for corrosion resistance
  • Pre-installed black nylon mesh covering protects the power wire from damage
  • Solid brass and satin chromed ANL/Mini-ANL fuse holder offers ideal protection for high-powered systems
  • Pre-terminated seamless power and ground ring terminals provide reliable performance
  • Full spec power and speaker wire meet or exceed American Wire Gauge standards
  • CEA-2015 and BC5W2 compliant
  • V-Series RCA Interconnect Cable
  • Shielded noise-rejecting coaxial construction provides protection against interference
  • Split-tip silver-plated ends offer high-quality performance
  • Molded ends equipped with colored channel identifiers for easy recognition
  • Twisted-pair construction featuring two conductors per channel
  • Includes an assortment of wire termination hardware and cable ties
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Kit includes:

  1. 17 ft. Frosted Blue 8 gauge power wire with seamless crimp ring terminal
  2. 3 ft. Frosted Black 8 gauge ground wire with seamless crimp ring terminal
  3. 17 ft. Clear 18 gauge remote lead wire
  4. 20 ft. Frosted Black/Blue 16 gauge speaker wire
  5. One 16.4 ft. 2-channel dual twisted construction RCA interconnect Cable (NVX XIV25)
  6. One NVX XMANL04 ANL/Mini-ANL Fuse Holder with 60 amp Mini-ANL fuse
  7. One Black rubber firewall grommet
  8. Two 8 Gauge Nickel Plated spade terminals
  9. Four 18 Gauge Spade terminal
  10. Two 18 Gauge Red butt connectors
  11. Four 16 Gauge quick disconnect
  12. Five 16 Gauge Nickel Plated spade terminals
  13. Two Heat Shrink tubes with the NVX logo
  14. Ten 6" Black zip ties

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Specifications & Details


Subwoofer Amplifier Power Specifications
RMS Power @ 2 ohms
350 watts x 1 channel
Peak Power Output
1200 watts x 1 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Maximum Input Gauge Size
8 AWG
Speaker Level Inputs
Yes - with included adapter
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 250 Hz
Low-Level Input Sensitivity
100mV - 6 volts
Remote bass/level controller
Yes
Fuse Rating
30A x 1 
CEA-2031 Compliant
Yes
Subwoofer Specifications
Subwoofer Size
12"
RMS Power Handling
350 watts
Total RMS Power Handling
350 watts
Peak Power Handling
1200 watts
Total Peak Power Handling
1200 watts
Woofer Surround
Rubber
Woofer Composition
Injection Molded Polypropylene
Voice Coil(s)
Single
Impedance (Per Voice Coil)
2 ohm
Voice Coil Diameter
2"
Magnet Type
Ferrite
Frequency Response
20 - 250 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Height
15.20"
Width
6.10"
Wood Thickness
3/4"
Box Exterior Color
Black
Box Finish
Carpet
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:

QB12SPA_XKIT82

Weight:

58.96lbs

Internal SKU:

qb12spa_xkit82

Internal Product ID:

231116

Customer Ratings & Reviews


NVX QB12SPA Amplified Subwoofer Enclosure and XKIT82 Amp Kit thumbnail image

5 star
92%
4 star
8%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
5
Features
4.9
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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Best bang for the buck

The following review is for XKIT82, which is a part of the bundle you are viewing.

DO NOT buy Non-Name brand kits that are under 50$, Get this one, NVX is a brand name and they don't cut corners on their products. This kit is everything I needed to install my 12" Rockford Fosgate sub, The gauge is true to spec, everything is fine, the RCA cables are top notch, highly recommend

By anton on March 9, 2014

154 found this helpful


Great Deal!!

The following review is for XKIT82, which is a part of the bundle you are viewing.

I dont think I can find another kit that is as good as this one. Sure is very high quality as well as the materials of the sure insulator. It just feels right. Realy heavybduty too. Just buy it. Good stuff.

By Bugatti on January 30, 2014

144 found this helpful


The Real Deal

The following review is for XKIT82, which is a part of the bundle you are viewing.

I originally purchased this kit because it was a good price and I liked the idea of having true-gauge wire. I was leery of the stuff at my local store as it looked a little cheap. Lots of plastic and not much wire. Not the case here. This is a high-quality wiring kit that gets you everything you need for a basic amp install. Convenient markings on the wire to help you lace the fuse holder and measure your speaker wire. High quality covering and wire, very flexible and plenty of length to help you do a quality job. The connectors supplied could be a little better, but they did do the job. It is nice they are stiff metal, but hand-crimping effectively was a little rough. That is a minor complaint.

I have since purchased a second kit for another amp and from now on NVX is a go-to brand for me.

By Mark on January 17, 2015

141 found this helpful


amp kit

The following review is for XKIT82, which is a part of the bundle you are viewing.

This is the first time going with NVX. Now..... NVX will be what I always go with.

By Shannon on October 1, 2014

139 found this helpful


Great ofc kit

The following review is for XKIT82, which is a part of the bundle you are viewing.

This is a great kit all of the wires including the RCA is super flexible, I would buy it again in a heartbeat

By Corey on April 26, 2014

137 found this helpful


NVX XKIT82

The following review is for XKIT82, which is a part of the bundle you are viewing.

I purchased this sub woofer set kit and it had everything needed to install the sub and all for a great price.I would recommend this kit for anyone needing the complete wire kit.

By Galen on March 3, 2014

136 found this helpful


Just what I needed, again!

The following review is for XKIT82, which is a part of the bundle you are viewing.

This amp kit is perfect for installing the 3channel JBL amp I purchased. Amazing quality for the best price out there. Do yourself a favor and look at everything NVX.

I had an extra RCA laying around so I only needed one.

By Ryan on January 19, 2014

135 found this helpful


quick turnaround

The following review is for XKIT82, which is a part of the bundle you are viewing.

When I ordered the product it was out of stock. Estimated delivery was weeks away, but it arrived just a few days later. True 8AWG OFC power and ground cable, high quality remote lead and high quality rca's and speaker leads. 10/10 would purchase again

By AK on May 17, 2015

105 found this helpful


I love it

The following review is for XKIT82, which is a part of the bundle you are viewing.

I'm glad I bought this kit it has everything I needed and the quality is excellent.

By Peter on April 26, 2015 Checkmark Icon Verified purchase

104 found this helpful


professional look

The following review is for XKIT82, which is a part of the bundle you are viewing.

I got this for free when i purchased my amp that it was recommended for. I was a little skeptical at first. But after a quick reference to my apm's manual and a little reassurance from the knowledgeable techs at sonic, i was ready. The whole kit come with everything you need and more. The quality is great and looks awesome. I also got a nvx bass knob as well. Thanks sonic.

By Keon on August 10, 2015

91 found this helpful




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