Garage
Shop
Loading...
Filters
filter-icon Filters & Sort

AudioControl SPK-8S4

500W RMS 8" Spike Series Single 4-ohm High-Performance Car Subwoofer

SPK-8S4 big
Go to item page Right Arrow Icon of Right Arrow

500W RMS 8" Spike Series Single 4-ohm High-Performance Car Subwoofer

• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 81.9876 dB

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

VIP Product Get $17.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $229.00
-22% $179.00

In stock

Only 3 Left!

Atrend A122-12CPV

Empty Dual 12" 3rd Row SUV Universal Vented Subwoofer Enclosure

A122-12CPV big
Go to item page Right Arrow Icon of Right Arrow

Empty Dual 12" 3rd Row SUV Universal Vented Subwoofer Enclosure

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Universal fit for 3rd row SUV and behind rear seat
• Miter and Dado construction
• Premium charcoal carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.7 cubic feet

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 $229.99
-11% $205.40

In stock

Only 2 Left!

JL Audio MicroSub CP108LG-W3v3

250 Watt RMS Single 8" 8W3v3-4 Subwoofer Loaded in a Slot-Ported MicroSub Enclosure (4 ohms Final Impedance)

CP108LG-W3v3 big
Go to item page Right Arrow Icon of Right Arrow

250 Watt RMS Single 8" 8W3v3-4 Subwoofer Loaded in a Slot-Ported MicroSub Enclosure (4 ohms Final Impedance)

• RMS: 250W Power Handling
• Mineral-Filled Polypropylene Cone
• Single 4 Ohm
• Vented Reinforcement Collar
• Elevated Frame Cooling
• Floating Cone Attach Method (FCAM)

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

VIP Product Get $45.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
$449.99

In stock

Used from: $382.49

NVX NSW104 Version 3 (NSW104v3)

1000W Peak (500W RMS) N-Series v3 10" Dual 4-Ohm Car Subwoofer

NSW104v3 big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (500W RMS) N-Series v3 10" Dual 4-Ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 5.36"
• Sensitivity: 85 dB

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

42
List price $107.99
-17% $89.99

In stock

SSV Works WP-US10

Loaded 300W RMS 10" Universal Subwoofer Enclosure with SSV Works Subwoofer

230-WP-US10 big
Go to item page Right Arrow Icon of Right Arrow

Loaded 300W RMS 10" Universal Subwoofer Enclosure with SSV Works Subwoofer

• Sealed enclosure with 1 10" Subwoofer
• 300 watts RMS (600 watts Peak)
• Includes plug and play wire harness kit
• Dimensions: 10" L x 12.28" H x 14.21" W

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

VIP Product Get $65.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$649.99

In stock.

• Sealed enclosure with 1 10" Subwoofer
• 300 watts RMS (600 watts Peak)
• Includes plug and play wire harness kit
• Dimensions: 10" L x 12.28" H x 14.21" W

Limited time!

Kicker VL7R122 (45VL7R122)

1200W Peak (600W RMS) Loaded Single 12" Vented Enclosure

VL7R122 big
Go to item page Right Arrow Icon of Right Arrow

1200W Peak (600W RMS) Loaded Single 12" Vented Enclosure

• Ported enclosure with 1 12" Solo-Baric L7R Series Subwoofer
• 600 watts RMS (1200 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 15" H x 8-1/2" W x 14-7/8" W2

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 $429.99
Save $110.03
-26% $319.96

In stock

Only 2 Left!

Limited time!

JL Audio C6-650cw (Open Box, Great)

100W RMS 6.5" C6 Series Single 4-ohm Subwoofer

C6-650cw big
Go to item page Right Arrow Icon of Right Arrow

100W RMS 6.5" C6 Series Single 4-ohm Subwoofer

• RMS Power: 100 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Rubber Surround
• Mount depth: 2.6"
• Sensitivity: 87.37 dB

10% Off Open Box!
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 $329.99
-30% $230.99
$207.89 with coupon | Price details

In stock

Only 1 Left!

• RMS Power: 100 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Rubber Surround
• Mount depth: 2.6"
• Sensitivity: 87.37 dB

Kicker CWQ122 (51CWQ122)

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

51CWQ122 big
Go to item page Right Arrow Icon of Right Arrow

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

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• SoloKon Polypropylene Cone
• Blue-stitched Santoprene Rubber Surround
• Mount depth: 7-1/8"
• Sensitivity: 85.4 dB

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

VIP Product Get $35.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $379.99
-8% $349.99

In stock

Like New from: $297.49

JL Audio 6W3V3-4

150W RMS 6.5" W3v3 Series Single 4-ohm Car Subwoofer

6W3V3-4 big
Go to item page Right Arrow Icon of Right Arrow

150W RMS 6.5" W3v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.25"
• Sensitivity: 80.49 dB

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

VIP Product Get $32.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

25
$319.99

In stock

Used from: $238.94 Like New from: $271.99

Sony XS-W104GS

1500W Peak (350W RMS) 10" XS Series Single 4-ohm Car Subwoofer

XS-W104GS big
Go to item page Right Arrow Icon of Right Arrow

1500W Peak (350W RMS) 10" XS Series Single 4-ohm Car Subwoofer

• Peak Power: 1500 watts
• RMS Power: 350 watts
• Impedance: Single 4 ohm
• Paper cone with Polypropylene cap
• Rubber surround
• Mount depth: 5-3/8"
• Sensitivity: 86 dB

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

VIP Product Get $15.80 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $159.99
$158.00

In stock

Only 3 Left!

Limited time!

Infinity Kappa 83WDSSI (INFSUBKA83WDSSIAM)

1200W Peak (400W RMS) 8” Kappa Series Single 2-or 4-ohm Car Subwoofer

KAPPA 83WDSSI big
Go to item page Right Arrow Icon of Right Arrow

1200W Peak (400W RMS) 8” Kappa Series Single 2-or 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Single 2 or 4 ohm
• Glass Fiber Cone
• Rubber Surround
• Mount depth: 5.42"
• Sensitivity: 91 dB

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 $289.95
Save $140.00
-48% $149.95

In stock

Used from: $195.97

Kicker DL7TDF122 (49DL7TDF122)

1200W RMS Loaded Dual 12" Sealed Enclosure

49DL7TDF122 big
Go to item page Right Arrow Icon of Right Arrow

1200W RMS Loaded Dual 12" Sealed Enclosure

• 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

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

VIP Product Get $75.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $849.99
-12% $749.99

In stock

Kicker CWQ124 (51CWQ124)

2000W Peak (1000W RMS) 12" CompQ Series Dual 4-ohm Subwoofer

51CWQ124 big
Go to item page Right Arrow Icon of Right Arrow

2000W Peak (1000W RMS) 12" CompQ Series Dual 4-ohm Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Blue-stitched Santoprene Rubber Surround
• Mount depth: 7-1/8"
• Sensitivity: 85.4 dB

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

VIP Product Get $35.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $379.99
-8% $349.99

In stock

NVX SMW12D4

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer

SMW12D4 big
Go to item page Right Arrow Icon of Right Arrow

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.82"
• Sensitivity: 88 dB

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

VIP Product Get $11.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $131.99
-17% $109.99

In stock

Used from: $75.99
Limited time!

NVX BXSQ112

1200W Peak (600W RMS) Sealed 2-Ohm Loaded Enclosure with Single 12" S-Series Shallow-Mount Subwoofer

BXSQ112 big
Go to item page Right Arrow Icon of Right Arrow

1200W Peak (600W RMS) Sealed 2-Ohm Loaded Enclosure with Single 12" S-Series Shallow-Mount Subwoofer

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

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

VIP Product Get $35.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $479.99
Save $130.00
-27% $349.99

In stock

DS18 EBM-FFPUNI-2X8

Empty Dual 8" Vented Enclosure

EBM-FFPUNI-2X8 big
Go to item page Right Arrow Icon of Right Arrow

Empty Dual 8" Vented Enclosure

• Empty 8" Dual Ported Subwoofer Enclosure
• 3/4" medium density fiberboard construction with sprayliner finish
• Vented front-firing design enhances sound projection
• Under seat enclosure mounting

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

VIP Product Get $48.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$479.95

In stock.

JL Audio 10W3v3 H.O. Wedge - HO110RG-W3v3

500W H.O. Wedge Series Single 10" W3v3 Subwoofer Loaded Ported Enclosure

HO110RG-W3v3 big
Go to item page Right Arrow Icon of Right Arrow

500W H.O. Wedge Series Single 10" W3v3 Subwoofer Loaded Ported Enclosure

• 500 Watts RMS
• Sensitivity: 84.87 dB
• 2 Ohm Final Impedance
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• JL Audio's patented, chamber-coupled port design
• Gray carpet wrap
• fine-tuned through extensive real-world listening

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

VIP Product Get $73.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

12
$729.99

In stock

Only 3 Left!

Used from: $620.49

JL Audio 10W6v3-D4

600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

10W6v3-D4 big
Go to item page Right Arrow Icon of Right Arrow

600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Rubber Surround
• Mount depth: 6.89"
• Sensitivity: 82.7 dB

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

VIP Product Get $85.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
$849.99

In stock

Used from: $722.49

Cerwin-Vega H12DV4

1950W Peak (650W RMS) 12" HED Series Dual 4-ohm Subwoofer

H12DV4 big
Go to item page Right Arrow Icon of Right Arrow

1950W Peak (650W RMS) 12" HED Series Dual 4-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Hybrid Polypropylene-Treated Paper cone
• TPE Surround
• Mount depth: 5.96"
• Sensitivity: 85 dB

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

VIP Product Get $17.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $203.99
-17% $169.99

In stock

NVX NE121P

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo

NE121P big
Go to item page Right Arrow Icon of Right Arrow

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo

• 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

2
$135.99

In stock

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 Subwoofer and Sub Box Upgrades in 2004 Thunderbird

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2004 Ford Thunderbird?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your Thunderbird.

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

    2004 Ford Thunderbird

    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 category 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.