Garage
Shop

See all parts that fit your 1985 Firenza

NVX NE121S w/ Kicker 51CWQ122 (Sold Individually)

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 12" CompQ Series Dual 2-ohm Subwoofer

NVX
Shop all NVX
Limited time!
highlight-star-icon

12" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Learn more about the ne121s_51cwq122
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
2026-07-27 11:08:20
List price $479.98
Thanks , You Pay:
-12%

$421.98

 with warranty
Starting at $39/mo or 4 payments of $106 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

254
-33.36%

$79.96

List price $119.99

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

214
-9.16%

$109.00

List price $119.99

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

72
-10.53%

$84.99

List price $94.99

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

SXE-6926S main

Alpine SXE-6926S

280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers

13
-20.84%

$56.99

List price $71.99

REF6532IXAM main

Infinity Reference REF6532IXAM

360W Peak (120W RMS) 6.5" Reference Series 2 Way Coaxial 3-ohm Speakers

22
-20.01%

$119.95

List price $149.95

Description


NVX brand icon

Authorized dealer

NVX NE121S

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo
Quantity: 1

Product Details:

  • Not compatible with NVX VC-Series Subwoofers
  • 12" Single Sealed 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: 10-1/8"
  • Subwoofer cutout diameter: 11-7/32"
  • Internal box volume: 1.00 cubic feet
  • Dimensions: 13.00" D x 15.00" W x 15.00" H
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Kicker CWQ122 (51CWQ122)

2000W Peak (1000W RMS) 12" CompQ Series Dual 2-ohm Subwoofer
Quantity: 1

Product Details:

  • 12" Dual 2 ohm CompQ Series Subwoofer
  • Power Handling:
    • Peak: 2000 watts
    • RMS: 1000 watts
  • SoloKon Polypropylene Cone
  • Blue-stitched Santoprene Rubber Surround
  • 23 mm Xmax
  • Ceramic magnet motor structure
  • With advanced suspension and heat management system
  • Solid, non-vented pole piece construction
  • Die-cast aluminum basket for motor alignment
  • Frequency Response: 20 - 100 Hz
  • Resonance Frequency (Fs): 40.5 Hz
  • Sensitivity: 85.4 dB
  • Recommended sealed box volume: 0.88 cubic feet - 2 cubic feet
  • Recommended ported box volume: 1.75 cubic feet - 3.25 cubic feet
  • Top-mount depth: 7-1/8"
  • Cutout diameter: 11-1/16"
  • CTA-2031 Compliant
  • Authorized Internet Dealer
  • 3 Year Manufacturer's Warranty

  • Sold Individually


Best selling similar products

TNE212D small

MTX Audio TNE212D

• Sealed enclosure with 2 12" Terminator Series Subwoofer
• 200 watts RMS each
• Final Impedance: 2-ohm
• Dimensions: 29.63" L x 14" H x 13.5" W

(32)

$219.95

List price $249.95

EN-DF10A small

DS18 EN-DF10A

• 10" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost: 0dB to 12dB
• Speaker-Level Inputs

$359.95

List price $359.95

BE-TOYCAM-G8 small

NVX Loaded BOOST Box - 2018-2024 Toyota Camry - BE-TOYCAM-G8

• Sealed BOOST enclosure with 1 10" N Series Subwoofer
• Fits select 2018-2025 Camry Hybrid and Camry
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

$299.99

List price $374.99

R2S-1X10 small

Rockford Fosgate Prime R2S-1X10

• Sealed truck enclosure with 1 10" Prime R2 Series Subwoofer
• 200 watts RMS (400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 19" L x 13.5" H x 5.25" W x 3.25" W2

(17)

$239.99

List price $239.99

49DL7TDF122 small

Kicker DL7TDF122 (49DL7TDF122)

• Sealed enclosure with 2 12" Solo-Baric L7T Series Subwoofer
• 1200 watts RMS Power
• Final Impedance: 2-ohm
• Dimensions: 38-3/16" L x 8-1/4" H x 17-1/8" W

(1)

$749.99

List price $849.99

CLS113RG-W7AE small

JL Audio CLS113RG-W7AE

• ProWedge 13" W7AE Loaded Sealed Subwoofer Enclosure
• 3000W Peak
• 1500W RMS
• 3 Ohm Final Impedance
• High Grade Black Carpet Finish
• Engraved JL Audio and W7 Logos
• Rear Firing Design
• 10th Anniversary Edition W7 Subwoofer

(10)

$2299.99

List price $2299.99

BE-TSLAY-G1D small

NVX Loaded BOOST Box - 2020-2023 Tesla Model Y - BE-TSLAY-G1D (Driver's Side)

• Sealed BOOST enclosure with 1 10" N Series Subwoofer (Driver Side)
• Fits select 2020-2023 Model Y (5-seat models only)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

(1)

$279.99

List price $562.99

BE-TSLAY-G1P small

NVX Loaded BOOST Box - 2020-2023 Tesla Model Y - BE-TSLAY-G1P (Passenger's Side)

• Sealed BOOST enclosure with 1 10" N Series Subwoofer (Passenger Side)
• Fits select 2020-2023 Model Y (5-seat models only)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

(2)

$279.99

List price $562.99

R2S-1X12 small

Rockford Fosgate Prime R2S-1X12

• Sealed truck enclosure with 1 12" Prime R2 Series Subwoofer
• 250 watts RMS (500 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 27.375" L x 13.5" H x 3.25" W x 5.25" W2

(10)

$259.99

List price $259.99

BXSQ112 small

NVX BXSQ112

• Sealed enclosure with 1 12" SQ Series Subwoofer
• 600 watts RMS (1200 watts Peak)
• Final Impedance: 2-ohm

$349.99

List price $479.99

Specifications & Details


Subwoofer Specifications
Series
CompQ Series
Subwoofer Size
12"
RMS Power Handling
1000 watts
Peak Power Handling
2000 watts
Woofer Composition
SoloKon Polypropylene
Woofer Surround
Ribbed Santoprene
Sensitivity
85.4 dB
Frequency Response
20 - 100 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Sealed
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:

NE121S_51CWQ122

Weight:

49.70lbs

Internal SKU:

ne121s_51cwq122

Internal Product ID:

228759

Customer Ratings & Reviews


NVX NE121S w/ Kicker 51CWQ122 (Sold Individually) thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

The following review is for NE121S, which is a part of the bundle you are viewing.

Works great with my Kicker CWR124

By GrimGodiva on June 9, 2026 Checkmark Icon Verified purchase


The following review is for 51CWQ122, which is a part of the bundle you are viewing.
By Jason on April 16, 2026 Checkmark Icon Verified purchase
2014 Ford Focus


The following review is for 51CWQ122, which is a part of the bundle you are viewing.
By Jeremy on January 14, 2026 Checkmark Icon Verified purchase


The following review is for 51CWQ122, which is a part of the bundle you are viewing.
By Nakul on May 11, 2025 Checkmark Icon Verified purchase


The following review is for 51CWQ122, which is a part of the bundle you are viewing.
By Marvin on March 11, 2025 Checkmark Icon Verified purchase




ZV715D1 small

Sundown Audio Z-15 v.7 D1 15" (Z15V7D1)

7000W Peak (3500W RMS) 15" Z Series V7 Dual 1-ohm Car Subwoofer (SW-ZV715D1)

$1364.99

List price $1559.99

ODYSSEY Sound Disk Beanie (Purple) small

Aerial7 ODYSSEY Sound Disk Sports Beanie - Purple

Comfortable Sound Disk Sports Beanie with Built-In Headphones and In-Line Microphone

$5.00

List price $60.00

SMW12D4_12TKDV small

Atrend 12TKDV with (2) NVX SMW12D4 Subwoofers

Dual 12" Vented Truck Enclosure with (2) 400W RMS Shallow-Mount 12" Dual 4-Ohm Subwoofer

(10)

$319.93

List price $473.97

50HPBT6 small

Kicker Warhorse HPBT6 (50HPBT6)

6-Output Warhorse Series High-Power Battery Terminal Block

$59.99

List price $59.99

VMAXS102, MDFS10 small

Cerwin-Vega VMAXS102 + Free 10" Sealed Enclosure

600W MAX VMAX Series 10″ Dual 2-ohm High-Performance Shallow Subwoofer

(121)

$214.99

List price $351.98

SEI-EXSE3301 small

Sound Extreme by ECOXGEAR SEDS33 (SEI-EXSE3301)

500W Peak 33" Elite Series 11-Speaker Amplified Bluetooth Soundbar with Integrated Remote

$549.99

List price $549.99

NE81P_EV68D4 small

NVX NE81P w/Sundown Audio E V.6 8" D4

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/ 300W RMS 8" E Series Dual 4-ohm Subwoofer

(3)

$229.98

List price $293.98

DS1110/37 small

Philips Fidelio DS1110 (DS1110/37) - Black

30-Pin Docking Station and Stereo Speaker for iPhone, iPod with Alarm Clock & Rear USB Charging Port

$59.95

List price $89.99

NE101S_M2D410SG2 small

NVX NE101S w/ Rockford Fosgate M2D4-10S-G2

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" M2 Series Dual 4-ohm Sealed Marine Subwoofer with RGB LED Lighting

(1)

$495.98

List price $611.98

Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1985 Oldsmobile Firenza

1995 Ford Ranger

2015 Mazda 5

2003 Hyundai Tiburon

2014 BMW 535d xDrive

2003 Audi A6

2012 BMW 750Li

1994 Pontiac Firebird

1995 Dodge Stealth

2021 MINI Countryman

Vehicle
Store
Delete

2008 Harley Davidson FXSTSSE2 Screamin Eagle Softail Springer

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

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

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

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