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

Atrend 15KS

Empty Single 15" Sealed Enclosure for Kicker L7R and L7S Series Subwoofers

15KS big
Go to item page Right Arrow Icon of Right Arrow

Empty Single 15" Sealed Enclosure for Kicker L7R and L7S Series Subwoofers

• 15" Single Sealed Subwoofer Enclosure
• Fits Kicker L7R and L7S series subwoofers
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.25 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

1
List price $119.99
-29% $84.99

In stock

Pioneer TS-A301S4

1600W Peak (500W RMS) 12" Champion Series Single 4-ohm Car Subwoofer

TS-A301S4 big
Go to item page Right Arrow Icon of Right Arrow

1600W Peak (500W RMS) 12" Champion Series Single 4-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Carbon and Mica Reinforced Injection Molded Polypropylene Cone
• Elastic Polymer Surround
• Mount depth: 6.125"
• Sensitivity: 92 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

4
List price $155.00
-16% $130.00

Available

Ships in 10-14 days

Kicker CVX122 (50CVX122)

1500W Peak (750W RMS) 12" CompVX Series Dual 2-ohm Car Subwoofer

50CVX122 big
Go to item page Right Arrow Icon of Right Arrow

1500W Peak (750W RMS) 12" CompVX Series Dual 2-ohm Car Subwoofer

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 6-11/16"
• Sensitivity: 87.1 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

List price $349.99
-9% $319.99

In stock

Used from: $223.99

Tru Spec S15 Elite (1649HUN)

Empty Single 15" Vented Prefabricated Square Enclosure for Sundown U 15" Subwoofers

S15Elite big
Go to item page Right Arrow Icon of Right Arrow

Empty Single 15" Vented Prefabricated Square Enclosure for Sundown U 15" Subwoofers

• 15" Single/Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.00 cubic feet
• Compatible with Sundown U 15" 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

List price $449.99
-11% $399.99

In stock.

Cerwin-Vega V10DV4

3000W Peak (1000W RMS) 10" Vega Series Dual 4-ohm Subwoofer

V10DV4 big
Go to item page Right Arrow Icon of Right Arrow

3000W Peak (1000W RMS) 10" Vega Series Dual 4-ohm Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5.94"
• Sensitivity: 86 dB

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

VIP Product Get $25.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $299.99
-17% $249.99

In stock

Only 3 Left!

Deaf Bonce Machete MF-10S D2

1600W Peak (800W RMS) 10” Machete Series Dual 2-ohm Car Subwoofer

MF-10S D2 big
Go to item page Right Arrow Icon of Right Arrow

1600W Peak (800W RMS) 10” Machete Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 5.63"
• Sensitivity: 84.00 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

$139.90

In stock

AudioControl SPC-10S4

600W RMS 10" Space Series Single 4-ohm Shallow Car Subwoofer

SPC-10S4 big
Go to item page Right Arrow Icon of Right Arrow

600W RMS 10" Space Series Single 4-ohm Shallow Car Subwoofer

• RMS Power: 600 watts
• Impedance: Single 4 ohm
• Fiber Matrix Injection Molded Polypropylene Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 87.29 dB

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

VIP Product Get $20.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $229.00
-9% $209.00

In stock

Only 3 Left!

Hertz DST 30.3B

1000W Peak (250W RMS) Loaded Single 12" Vented Tube Enclosure

DST 30.3B big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (250W RMS) Loaded Single 12" Vented Tube Enclosure

• Ported enclosure with 1 12" DST Series Subwoofer
• 250 watts RMS (1000 watts Peak)
• Final Impedance: 4-ohm
• Dimensions: 26" L x 26" W

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 $320.00
-13% $279.99

In stock

Only 3 Left!

JBL Club 122 (JBLSUBCB122)

1200W Peak (400W RMS) 12" Club Series Dual 2-or 4-ohm Car Subwoofer

Club 122 big
Go to item page Right Arrow Icon of Right Arrow

1200W Peak (400W RMS) 12" Club Series Dual 2-or 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Dual 2 or 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5-1/2"
• Sensitivity: 86 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 $209.95
-14% $179.95

In stock

Atrend 10DQV

Empty Dual 10" Vented Subwoofer Enclosure

10DQV big
Go to item page Right Arrow Icon of Right Arrow

Empty Dual 10" Vented Subwoofer Enclosure

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.5 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

6
List price $154.99
-35% $99.99

In stock

Only 1 Left!

Orion HCCA102

8000W Peak (2000W RMS) 10" HCCA Series Dual 2-ohm Car Subwoofer

HCCA102 big
Go to item page Right Arrow Icon of Right Arrow

8000W Peak (2000W RMS) 10" HCCA Series Dual 2-ohm Car Subwoofer

• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• UV-Resistant Polypropylene Cone
• Nitrile Butadiene Rubber (NBR)-Foam Surround
• Mount depth: 8.425"
• Sensitivity: 86.51 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

16
List price $599.99
-17% $499.95

In stock

Only 2 Left!

• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• UV-Resistant Polypropylene Cone
• Nitrile Butadiene Rubber (NBR)-Foam Surround
• Mount depth: 8.425"
• Sensitivity: 86.51 dB

Atrend 10RPD

Empty Dual 10" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

Go to item page Right Arrow Icon of Right Arrow

Empty Dual 10" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

• 10" Dual Ported Subwoofer Enclosure
• Fits Rockford Fosgate P2 and P3 series subwoofers
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.8 cubic feet

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $169.99
-35% $109.99

• 10" Dual Ported Subwoofer Enclosure
• Fits Rockford Fosgate P2 and P3 series subwoofers
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.8 cubic feet

Atrend 8RPD

Empty Dual 8" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

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

Empty Dual 8" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

• 8" Dual Ported Subwoofer Enclosure
• Fits Rockford Fosgate P2 and P3 series subwoofers
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 5.326 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 $164.99
-27% $119.99

In stock

Only 3 Left!

Alpine RS-W10D4

1800W Peak (600W RMS) 10” R-Series Dual 4-ohm Shallow Car Subwoofer

RS-W10D4 big
Go to item page Right Arrow Icon of Right Arrow

1800W Peak (600W RMS) 10” R-Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 1800 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.19"
• Sensitivity: 78 dB

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

VIP Product Get $70.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $840.00
-17% $699.95

In stock

Only 3 Left!

Bazooka BT8024DVC (Open Box, Good)

200W Peak Loaded Single 8" Non-Amplified Ported Subwoofer Bass Tube Enclosure

BT8024DVC-2 big
Go to item page Right Arrow Icon of Right Arrow

200W Peak Loaded Single 8" Non-Amplified Ported Subwoofer Bass Tube Enclosure

• Ported enclosure with 1 8" BT Series Subwoofer
• 200 watts Peak
• Final Impedance: 4-ohm x 2 sets
• Dimensions: 18" L x 10" H x 8.5" W

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 $199.99
-30% $139.99

In stock

Only 1 Left!

• Ported enclosure with 1 8" BT Series Subwoofer
• 200 watts Peak
• Final Impedance: 4-ohm x 2 sets
• Dimensions: 18" L x 10" H x 8.5" W

Limited time!

Kicker L7R102 (45L7R102)

1000W Peak (500W RMS) 10" Solo-Baric L7R Series Dual 2-ohm Subwoofer

L7R102 big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (500W RMS) 10" Solo-Baric L7R Series Dual 2-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Injection-molded SoloKon Cone
• Ribbed Santoprene Wrap Around Gasketing
• Impedance: Dual 2 ohm
• Mount depth: 6 1/8"
• Sensitivity: 85.9 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

1
List price $259.99
Save $68.03
-26% $191.96

In stock

Pioneer TS-A3000LB

1500W Peak (400W RMS) Loaded Single 12" Sealed Shallow Truck Enclosure

TS-A3000LB big
Go to item page Right Arrow Icon of Right Arrow

1500W Peak (400W RMS) Loaded Single 12" Sealed Shallow Truck Enclosure

• Sealed shallow truck enclosure with 1 12" TS Series Subwoofer
• 400 watts RMS (1500 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 23.625" L x 13.750" H x 6.75" W

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

VIP Product Get $28.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $320.00
-13% $279.99

In stock

DC Audio Level 3 10M3D1 (M3LV310D1)

2000W Peak (1000W RMS) 10" Level 3 Series M3 Version Dual 1-ohm Car Subwoofer

M3LV310D1 big
Go to item page Right Arrow Icon of Right Arrow

2000W Peak (1000W RMS) 10" Level 3 Series M3 Version Dual 1-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 1 ohm
• Non-Pressed Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 6.25"
• Sensitivity: 82.29 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 $490.03
-33% $329.99

Available

Ships in 10-14 days

Rockford Fosgate Power T1 T1D415

2000W Peak (1000W RMS) 15" Power Series Dual 4-ohm Car Subwoofer

T1D415 big
Go to item page Right Arrow Icon of Right Arrow

2000W Peak (1000W RMS) 15" Power Series Dual 4-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 87.5 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

8
$849.99

In stock

Only 1 Left!

Used from: $722.49

MTX SLH12X2S

Empty Dual 12" Ported Square Sledgehammer Enclosure

SLH12X2S big
Go to item page Right Arrow Icon of Right Arrow

Empty Dual 12" Ported Square Sledgehammer Enclosure

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.66 cubic feet
• Mounting hardware included

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$199.95

In stock

Only 2 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 330xi

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2003 BMW 330xi?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your 330xi.

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

    1990 Mitsubishi Mighty Max

    2003 BMW 330xi

    2020 Porsche Macan

    1973 Mercury Cougar

    2008 Chrysler Pacifica

    2019 Volvo XC90

    1977 GMC C2500 Pickup

    2021 Jeep Gladiator

    1998 Ford Escort

    2016 Maserati Ghibli

    Vehicle
    Store
    Delete

    1978 Suzuki SP370

    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.