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

JL Audio M6-8IB-S-GwGw-4

200W RMS 8" M6 Series Single 4-ohm Marine Subwoofer with Gloss White Sport Grille

M6-8IB-S-GwGw-4 big
Go to item page Right Arrow Icon of Right Arrow

200W RMS 8" M6 Series Single 4-ohm Marine Subwoofer with Gloss White Sport Grille

• RMS Power: 200 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Synthetic Rubber Surround
• Mount depth: 5.07"
• Sensitivity: 86.8 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

$349.99

In stock

Only 1 Left!

Limited time!

NVX VCW82 Version 3 (VCW82v3)

1300W Peak (650W RMS) 8" VC-Series v3 Dual 2-ohm Car Subwoofer

VCW82v3 big
Go to item page Right Arrow Icon of Right Arrow

1300W Peak (650W RMS) 8" VC-Series v3 Dual 2-ohm Car Subwoofer

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

Dads & Grads Sale! Save 15% 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

12
List price $203.99
-17% $169.99

In stock

Deaf Bonce Apocalypse DB-SA2508 D1

1600W Peak (800W RMS) 8” Apocalypse Series Dual 1-ohm Car Subwoofer

DB-SA2508 D1 big
Go to item page Right Arrow Icon of Right Arrow

1600W Peak (800W RMS) 8” Apocalypse Series Dual 1-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 5.22"
• Sensitivity: 84.7 dB

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

VIP Product Get $22.99 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
$229.90

In stock

Only 1 Left!

NVX NE81P

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo

NE81P big
Go to item page Right Arrow Icon of Right Arrow

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo

• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .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

1
List price $89.99
-17% $74.99

In stock

Limited time!

NVX VCW84 Version 3 (VCW84v3)

1300W Peak (650W RMS) 8" VC-Series v3 Dual 4-ohm Car Subwoofer

VCW84v3 big
Go to item page Right Arrow Icon of Right Arrow

1300W Peak (650W RMS) 8" VC-Series v3 Dual 4-ohm Car Subwoofer

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

Dads & Grads Sale! Save 15% 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

15
List price $203.99
-17% $169.99

In stock

NVX NE81S

Single 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.45 Cu. Ft. with Polyfil and NVX Logo

NE81S big
Go to item page Right Arrow Icon of Right Arrow

Single 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.45 Cu. Ft. with Polyfil and NVX Logo

• 8" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .45 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 $65.99
-9% $59.99

In stock

Sundown Audio U-8 D4 8" (U8D4) (Open Box, Great)

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D4)

U-8 D4 big
Go to item page Right Arrow Icon of Right Arrow

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D4)

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 6.02"
• Sensitivity: 81.6 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

List price $419.99
-42% $244.99

In stock

Only 1 Left!

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 6.02"
• Sensitivity: 81.6 dB

JL Audio 8W3V3-4

250W RMS 8" W3v3 Series Single 4-ohm Car Subwoofer

8W3V3-4 big
Go to item page Right Arrow Icon of Right Arrow

250W RMS 8" W3v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.63"
• Sensitivity: 83.24 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

45
$349.99

In stock

Used from: $297.49

NVX NE82P

Dual 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo

NE82P big
Go to item page Right Arrow Icon of Right Arrow

Dual 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.5 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
$139.99

In stock

Limited time!

Kicker L7S82 (44L7S82)

900W Peak (450W RMS) 8” Solo-Baric L7S Series Dual 2-ohm Subwoofer

L7S82 big
Go to item page Right Arrow Icon of Right Arrow

900W Peak (450W RMS) 8” Solo-Baric L7S Series Dual 2-ohm Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-3/4"
• Sensitivity: 82.37 dB

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

VIP Product Get $17.60 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $239.99
Save $64.03
-27% $175.96

In stock

Used from: $153.99

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!

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
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

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 8W1v3-4

150W RMS 8" W1v3 Series Single 4-ohm Car Subwoofer

8W1v3-4 big
Go to item page Right Arrow Icon of Right Arrow

150W RMS 8" W1v3 Series Single 4-ohm Car Subwoofer


• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 3.86"
• Sensitivity: 84.8 dB

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

VIP Product Get $20.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

10
$199.99

In stock

Used from: $169.99

Tru Spec Dual 8" (1458GTO)

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

Dual 8” big
Go to item page Right Arrow Icon of Right Arrow

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

8
List price $239.99
-33% $159.99

In stock

Only 2 Left!

Atrend 8TKV

Empty Single 8" Vented Truck Subwoofer Enclosure

8TKV big
Go to item page Right Arrow Icon of Right Arrow

Empty Single 8" Vented Truck Subwoofer Enclosure

• 8" Single Truck Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium black carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.51 cubic feet

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

VIP Product Get $8.06 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $89.99
-10% $80.60

Available

Ships in 10-14 days

Limited time!

Kicker CWRT84 (48CWRT84)

600W Peak (300W RMS) 8" CompRT Series Dual 4-ohm Shallow Car Subwoofer

CWRT84 big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (300W RMS) 8" CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-11/16"
• Sensitivity: 81.8 dB

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

VIP Product Get $15.20 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $209.99
Save $58.03
-28% $151.96

In stock

Used from: $132.99

Sundown Audio X-8 v.3 D2 8" (X8V3D2)

800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer (XV38D2)

XV38D2 big
Go to item page Right Arrow Icon of Right Arrow

800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer (XV38D2)

• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• FEA optimized spider and surround
• Mount depth: 6.8"
• Sensitivity: 82.1 dB

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

VIP Product Get $39.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $467.99
-17% $389.99

In stock

Only 2 Left!

• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• FEA optimized spider and surround
• Mount depth: 6.8"
• Sensitivity: 82.1 dB

Atrend 8TK

Empty Single 8" Truck Sealed Subwoofer Enclosure

8TK big
Go to item page Right Arrow Icon of Right Arrow

Empty Single 8" Truck Sealed Subwoofer Enclosure

• 8" Single Truck Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Universal truck (wedge) enclosure design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.27 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

3
List price $79.99
-13% $69.99

In stock

Only 1 Left!

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 2003 9-3

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2003 Saab 9-3?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your 9-3.

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

    2003 Saab 9-3

    1986 Toyota Van

    2009 Nissan Frontier

    2012 Smart Fortwo

    2011 Audi A5 Quattro

    1997 Chrysler Cirrus

    2018 Kia Forte5

    2012 Mitsubishi Eclipse

    2008 Honda Fit

    1992 Ford Bronco

    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.