Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2003 Mazda 6

Change vehicle | Remove vehicle

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 2003 Mazda 6

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

Filters
Subwoofers with a box ✕
Clear Filters
Reset Done
Product Type
Subwoofers with a box,
You Recently Chose:
Alarms (34)
Amplifiers (926)
Speaker diaphragms (10)
Subwoofers (1,127)
Subwoofers with a box (779)
Amplifiers with a wiring kit (437)
RCA cables and accessories (262)
Subwoofer enclosures (210)
Subwoofers with an amplifier and box (191)
Lighting accessories (176)
Subwoofer grilles (171)
Tweeters (Pro and special-fit) (151)
Amplifier wiring kits (140)
Speaker clamps and brackets (138)
Batteries (129)
Power and ground wire (129)
Fuses (123)
Backup cameras (119)
Speaker grilles (118)
Sound damping (105)
Subwoofers with an amplifier (101)
Alarm remote transmitters (96)
Handlebar and bar-mount speakers (96)
Line-out converters (88)
Fuse holders (81)
Speaker wire (73)
Replacement antennas (62)
Ring terminals (62)
Distribution blocks (58)
Light bars (58)
Connectors (56)
Speaker enclosures (52)
Tweeters (51)
Bluetooth adapters and transmitters (50)
Speaker spacers and rings (50)
Bass remotes (49)
Cables and interconnects (49)
Speaker baffles (44)
Dash cameras (39)
Sound processors (38)
Trim rings and universal mounts (38)
Stereo remote controls (33)
Recone kits (31)
Rocker and Button switches (31)
Circuit breakers (30)
Primary/Remote wire (29)
Battery isolators and relays (26)
Battery terminals (26)
Exterior lighting (26)
Installation accessories (25)
Audio test equipment (24)
Trigger output and bypass modules (24)
Alarm accessories (23)
Antenna extension cables (23)
Split loom and heat shrink (22)
Capacitors (20)
Diodes and resistors (20)
Knockout panels (18)
Equalizers (15)
Noise filters (15)
Terminal cups (14)
Battery terminal posts (13)
Rearview monitor and mirrors (13)
Adapters (12)
Headlight bulbs (11)
Radar and laser detectors (11)
Video adapters and switchers (11)
Bass booster enhancers and processors (8)
Battery chargers (8)
Power inverters (8)
2-way and CB radios (7)
Amplifier mounting hardware (7)
Panel and clip removal tools (7)
Voltmeters (7)
Blindspot cameras and sensors (6)
Carpet (6)
Gauge adapters (6)
Grommets and firewall bushings (6)
Headlights (6)
Passive crossovers (6)
Sensors (6)
Steering wheel adapters (6)
Box ports (5)
Knockout panel mount hardware (5)
Line drivers (5)
Power supplies (5)
Active Crossovers (4)
Bass Blockers (4)
License plates and frames (4)
Parking sensors (4)
Amplifier cooling fans (3)
Big 3 upgrade kits (3)
Door panel clips (3)
Subwoofer (3)
Door actuators and poppers (2)
In-motion video/navigation bypass (2)
Radar detector mounts (2)
Rearview mirror mounts (2)
Video amplifiers (2)
Alarms with remote start (1)
Backup batteries (1)
Cable management (1)
Connector sets (1)
FM modulators and transmitters (1)
Multi-camera and DVR systems (1)
Overhead monitors (1)
Remote mount media players (1)
Price Range
Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Punch Series (34)
S Series (25)
CompRT Series (23)
CompR Series (21)
Prime Series (19)
SA Series (19)
CompC Series (16)
CompVR Series (16)
Prime R2 Series (16)
W3 v3 Series (15)
Comp Series (14)
CompVX Series (14)
E-Series (13)
CompVT Series (12)
R2 Series (12)
SML Series (12)
Type-R Series (12)
W1 v3 Series (12)
X Series (12)
M2 Series (11)
W0 v3 Series (11)
CompQ Series (10)
Power T1 Series (10)
Punch P3 Shallow Mount Series (10)
Status Series (10)
Y-Series (10)
Bass Series (8)
HED Series (8)
REVO Series (8)
Stage Series (8)
VS Series (8)
W6 v3 Series (8)
W7 Series (8)
Club Series (7)
Punch P2 Series (7)
Reference Series (7)
Solo-Baric L7T Series (7)
T1 Slim Series (7)
TW3 Shallow Mount Series (7)
M1 Series (6)
N Series (6)
N-Series (6)
U Series (6)
DES Series (5)
Gen-X (5)
MW Series (5)
Punch P1 Series (5)
Punch P3 Series (5)
Solo-Baric L7R Series (5)
Terminator Series (5)
VC Series (5)
55 Series (4)
BT Series (4)
KM Subwoofer Series (4)
L Series (4)
Solo-Baric L7 Series (4)
Solo-Baric L7S Series (4)
TB Series (4)
XED Series (4)
Zero Series (4)
EPICX Series (3)
Excelon Reference Series (3)
LCS Series (3)
MicroSub Series (3)
Mille Pro Series (3)
R-Series (3)
Space Series (3)
Spike Series (3)
SQ Series (3)
StowAway Series (3)
VMAX Series (3)
35 Series (2)
Arena X Series (2)
BassLine Series (2)
DBA Series (2)
DBX Series (2)
DMD Series (2)
Hydro Series (2)
IXS Shallow Series (2)
Kappa Series (2)
KM Series (2)
Primus Series (2)
R Series (2)
SA Classic Series (2)
SWT Series (2)
TS Series (2)
TW5 Shallow Mount Series (2)
VEGA Series (2)
ZR Series (2)
ZXI Series (2)
75 Series (1)
A Series (1)
Black Air Series (1)
D Series (1)
DST Series (1)
eXcelon Series (1)
Fuse Series (1)
MotorSport Series (1)
P1 Series (1)
PRO-NEO Series (1)
Condition
Availability
filter-icon Filters & Sort

NVX NE121S w/ Kicker 51CWQ124 (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 4-ohm Subwoofer

NE121S_51CWQ124 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE121S w/ Kicker 51CWQ124 (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 4-ohm Subwoofer

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $479.98
-12% $421.98

In stock

Add to Cart

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

NVX NE101S w/ NVX NSW102 Version 3

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ N-Series v3 10" Dual 2-Ohm Car Subwoofer

NE101S_NSW102V3 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE101S w/ NVX NSW102 Version 3

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ N-Series v3 10" Dual 2-Ohm Car Subwoofer

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

53
List price $191.98
-24% $145.98

In stock

Add to Cart

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE102P w/ Rockford Fosgate Prime R2 R2SD4-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 4-ohm Shallow Car Subwoofer

NE102P_R2SD410 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE102P w/ Rockford Fosgate Prime R2 R2SD4-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 4-ohm Shallow Car Subwoofer

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

37
List price $475.97
-5% $449.97

In stock

Only 1 Left!

Add to Cart

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

Kicker DL7S122 (44DL7S122), NVX NDA12001 Amp and XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 2400W Peak N-Series Class-D Monoblock Amplifier and 4 Gauge OFC Amplifier Wiring Kit

44DL7S122_NDA12001_XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

Kicker DL7S122 (44DL7S122), NVX NDA12001 Amp and XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 2400W Peak N-Series Class-D Monoblock Amplifier and 4 Gauge OFC Amplifier Wiring Kit

  • Kicker 44DL7S122 3000W Peak Dual 12 inch Vented Subwoofer Enclosure
  • NVX NDA12001 1200W RMS N-Series Class-D Monoblock Amplifier
  • Remote Bass Knob included for easy output adjustments
  • XKIT42 Full Spec 4 Gauge 100% OFC Complete Wiring Kit
  • 2-Channel Amplifier installation setup with RCA interconnects
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

148
List price $1340.96
-18% $1,102.86

In stock

Add to Cart

  • Kicker 44DL7S122 3000W Peak Dual 12 inch Vented Subwoofer Enclosure
  • NVX NDA12001 1200W RMS N-Series Class-D Monoblock Amplifier
  • Remote Bass Knob included for easy output adjustments
  • XKIT42 Full Spec 4 Gauge 100% OFC Complete Wiring Kit
  • 2-Channel Amplifier installation setup with RCA interconnects

(2) NVX VSW122v3 with with Sealed Dual Enclosure

1200 Watt 12" VS-Series Dual 2-ohm Car Subwoofer

VSW122V2X2_MDFD12 big
Go to item page Right Arrow Icon of Right Arrow

(2) NVX VSW122v3 with with Sealed Dual Enclosure

1200 Watt 12" VS-Series Dual 2-ohm Car Subwoofer


12" VS-Series Subwoofer • Dual 2-ohm Voice Coil • RMS Range: 450 - 600 Watts • Non-Pressed Paper With Woven Carbon Fiber Top • High Excursion Foam Surround • Stamped Steel Basket • Single Nomex Spider

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

139
List price $431.97
-21% $339.97

In stock

Add to Cart

(2) NVX VSW124v3 with Sealed Dual Enclosure

1200 Watt (600W RMS) 12" VS-Series Dual 4-ohm Car Subwoofer + Sealed 12" Dual Subwoofer Enclosure

(2) VSW124v2,MDFD12 big
Go to item page Right Arrow Icon of Right Arrow

(2) NVX VSW124v3 with Sealed Dual Enclosure

1200 Watt (600W RMS) 12" VS-Series Dual 4-ohm Car Subwoofer + Sealed 12" Dual Subwoofer Enclosure

• 600 Watts RMS / 1200 Watts Max
• Dual 4-ohm Voice Coil
• Non-Pressed Paper With Woven Carbon Fiber Top
• High Excursion Foam Surround
• Stamped Steel Basket
• Single Nomex Spider
• Includes Sealed Dual Enclosure

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

157
List price $431.97
-17% $359.97

In stock

Add to Cart

NVX NSW104 Version 3 (NSW104v3) with Ported Enclosure (10TKLV)

1000W Peak (500W RMS) N-Series v3 10" Dual 4-Ohm Car Subwoofer + Universal Truck Style Vented Subwoofer Enclosure

NSW104V3_10TKLV big
Go to item page Right Arrow Icon of Right Arrow

NVX NSW104 Version 3 (NSW104v3) with Ported Enclosure (10TKLV)

1000W Peak (500W RMS) N-Series v3 10" Dual 4-Ohm Car Subwoofer + Universal Truck Style Vented Subwoofer Enclosure

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Sensitivity: 85 dB
• Includes Ported Subwoofer Enclosure

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

45
List price $267.98
-19% $215.98

In stock

Only 3 Left!

Add to Cart

JBL BassPro 12 + Belva BAK82 + Vent Mag Mount 4

Single Loaded 12" Ported Amplified Sub Enclosure with Bass Remote + Copper Clad Complete 2-Channel Amplifier Wiring Kit with Universal Magnetic Mount - Black and Chrome Finish

SUBBP12AM_BAK82_VMMAG4 big
Go to item page Right Arrow Icon of Right Arrow

JBL BassPro 12 + Belva BAK82 + Vent Mag Mount 4

Single Loaded 12" Ported Amplified Sub Enclosure with Bass Remote + Copper Clad Complete 2-Channel Amplifier Wiring Kit with Universal Magnetic Mount - Black and Chrome Finish

• 12" Amplified Loaded Subwoofer System
• 150 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

99
List price $499.86
-21% $392.93

In stock

Add to Cart

NVX NE101S w/ JL Audio 10W0v3-4

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo

NE101S_10W0V34 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE101S w/ JL Audio 10W0v3-4

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

69
List price $223.98
-13% $195.98

In stock

Add to Cart

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE102S w/ JL Audio 10W6v3-D4

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

NE102S_10W6V3D4 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE102S w/ JL Audio 10W6v3-D4

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $1843.97
$1,795.97

In stock

Only 3 Left!

Add to Cart

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE82S w/ Sundown Audio XV38D2

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/ 800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer

NE82S_XV38D2 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE82S w/ Sundown Audio XV38D2

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/ 800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer

• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $1031.97
-18% $843.97

In stock

Only 1 Left!

Add to Cart

• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE121P w/ Sundown Audio SAV312D2

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

NE121P_SAV312D2 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE121P w/ Sundown Audio SAV312D2

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

• 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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $635.98
-15% $539.55

In stock

Add to Cart

• 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

NVX NE101S w/ NVX NSW104 Version 3

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Dual 4-Ohm Car Subwoofer

NE101S_NSW104V3 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE101S w/ NVX NSW104 Version 3

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Dual 4-Ohm Car Subwoofer

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

43
List price $191.98
-24% $145.98

In stock

Add to Cart

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

(2) Alpine W12S4 with Sealed Dual Enclosure

750W Max (250W RMS) 12" BassLine Series Single 4 ohm Car Subwoofer

MDFD12, W12S4, W12S4 big
Go to item page Right Arrow Icon of Right Arrow

(2) Alpine W12S4 with Sealed Dual Enclosure

750W Max (250W RMS) 12" BassLine Series Single 4 ohm Car Subwoofer

• 750W Max
• 250W RMS
• Polypropylene-Mica cone
• High-excursion poly-foam surround
• High-strength custom steel frame
• Progressive Wavelit Ribs (P.W.R.) cone design
• Includes Sealed Dual Enclosure

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

142
List price $424.98
-22% $330.90

In stock

Add to Cart

Alpine R2-W12D4 with Sealed Enclosure

2250W Peak (750W RMS) 12" 750W R-Series Dual 4-Ohm Car Subwoofer

R2-W12D4, MDFS12 big
Go to item page Right Arrow Icon of Right Arrow

Alpine R2-W12D4 with Sealed Enclosure

2250W Peak (750W RMS) 12" 750W R-Series Dual 4-Ohm Car Subwoofer

• Peak Power: 2250 watts
• RMS Power: 750 watts
• Kevlar Reinforced Pulp Paper Cone
• High-Amplitude Multi-Roll (H.A.M.R) Surround
• Impedance: Dual 4 ohm
• Sensitivity: 84.6 dB
• Includes Sealed Enclosure

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

176
List price $609.99
-41% $359.95

In stock

Add to Cart

NVX NSW124 Version 3 (NSW124v3) with Sealed Enclosure (MDFD12)

1000W Peak (500W RMS) N-Series v3 12" Dual 4-Ohm Car Subwoofer + Sealed Sub Box with lined w/Polyfil

NSW124V3_MDFD12 big
Go to item page Right Arrow Icon of Right Arrow

NVX NSW124 Version 3 (NSW124v3) with Sealed Enclosure (MDFD12)

1000W Peak (500W RMS) N-Series v3 12" Dual 4-Ohm Car Subwoofer + Sealed Sub Box with lined w/Polyfil

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Sensitivity: 87 dB
• Includes Sealed Subwoofer Enclosure

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

153
List price $359.97
-17% $299.97

In stock

Add to Cart

NVX NE121S w/ JL Audio 12W6v3-D4

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

NE121S_12W6V3D4 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE121S w/ JL Audio 12W6v3-D4

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

• 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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

26
List price $1049.98
$1,021.98

In stock

Add to Cart

• 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

NVX NE101P w/ Kicker 51CWQ102 (Sold Individually)

Single 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo w/ 1600W Peak (800W RMS) 10" CompQ Series Dual 2-ohm Subwoofer

NE101P_51CWQ102 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE101P w/ Kicker 51CWQ102 (Sold Individually)

Single 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo w/ 1600W Peak (800W RMS) 10" CompQ Series Dual 2-ohm Subwoofer

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.50 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $431.98
-15% $367.98

In stock

Add to Cart

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.50 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE122S w/ Kicker 51CWQ124 (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 12" CompQ Series Dual 4-ohm Subwoofer

NE122S_51CWQ124 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE122S w/ Kicker 51CWQ124 (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 12" CompQ Series Dual 4-ohm Subwoofer

• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $915.97
-12% $803.97

In stock

Add to Cart

• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX NE102S w/ Rockford Fosgate Prime R2 R2SD2-10

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 2-ohm Shallow Car Subwoofer

NE102S_R2SD210 big
Go to item page Right Arrow Icon of Right Arrow

NVX NE102S w/ Rockford Fosgate Prime R2 R2SD2-10

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 2-ohm Shallow Car Subwoofer

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

25
List price $463.97
-10% $415.97

In stock

Add to Cart

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

Prev 13 14 15 16 17 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 2003 6

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2003 Mazda 6?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your 6.

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

    2008 Ford F-150

    2010 Dodge Ram 4500

    2003 Mazda 6

    2018 Toyota C-HR

    2009 Dodge Nitro

    2010 Toyota Sienna

    2007 Mazda 6

    1998 Dodge Dakota

    2004 Saturn L300-1

    1989 Eagle Summit

    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

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2003 6
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    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
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo