Garage
Shop

1981 BMW 633CSi

Universal loaded and/or powered sub box enclosures that fit most vehicles, including your 1981 633CSi.

Universal Sub Boxes (Loaded/Powered) for 1981 BMW 633CSi


Loading...
filter-icon Filters & Sort

SSV Works JJL-DS10

Custom-fit (400W RMS) 10” behind passenger seat enclosure with Kicker CompRT series subwoofer for 2018-up Jeep Wrangler Unlimited

190-JJL-DS10 big
Go to item page Right Arrow Icon of Right Arrow

Custom-fit (400W RMS) 10” behind passenger seat enclosure with Kicker CompRT series subwoofer for 2018-up Jeep Wrangler Unlimited

• 10" Sealed Subwoofer Enclosure
• Bolt-in installation
• Includes plug and play wire harness kit
• Custom SoloKon™ technology

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

VIP Product Get $51.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$509.99

In stock.

Diamond Audio DPAS10

300W Peak (150W RMS) Loaded Single 10" Amplified Sealed Subwoofer Enclosure

DPAS10 big
Go to item page Right Arrow Icon of Right Arrow

300W Peak (150W RMS) Loaded Single 10" Amplified Sealed Subwoofer Enclosure

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

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

VIP Product Get $40.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$399.99

In stock.

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

Cerwin-Vega VS12

600W Peak (300W RMS) Loaded Single 12" Passive Spare Tire Enclosure

VS12 big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (300W RMS) Loaded Single 12" Passive Spare Tire Enclosure

• Sealed enclosure with 1 11" VS Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 4-ohm

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

VIP Product Get $31.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $371.99
-17% $309.99

In stock.

AudioControl SPK-V12

700W RMS Loaded Single 12" Vented Enclosure

SPK-V12 big
Go to item page Right Arrow Icon of Right Arrow

700W RMS Loaded Single 12" Vented Enclosure

• Ported enclosure with 1 12" Spike Series Subwoofer
• Power Rating: 300-700 watts RMS
• Final Impedance: 2-ohm
• Dimensions: 19.88" L x 15.75" H x 16.02" W x 18.43" W2

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

VIP Product Get $62.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $859.00
-27% $629.00

In stock

Only 3 Left!

Bazooka MBTA10100

100W Peak Loaded Single 10" Amplified Ported Marine Subwoofer Bass Tube Enclosure

MBTA10100 big
Go to item page Right Arrow Icon of Right Arrow

100W Peak Loaded Single 10" Amplified Ported Marine Subwoofer Bass Tube Enclosure

• 10" Amplified Loaded Subwoofer System
• 100 watts Peak
• Speaker-Level Inputs
• RCBM-100 remote control 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

5
List price $369.99
-24% $279.99

Available

Ships in 10-14 days

• 10" Amplified Loaded Subwoofer System
• 100 watts Peak
• Speaker-Level Inputs
• RCBM-100 remote control sold separately

DS18 SB10A

700W Peak (350W RMS) 10" SB10-A Series Shallow 2-Ohm Car Subwoofer

SB10A big
Go to item page Right Arrow Icon of Right Arrow

700W Peak (350W RMS) 10" SB10-A Series Shallow 2-Ohm Car Subwoofer

• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

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

VIP Product Get $33.60 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$335.95

In stock

Only 2 Left!

Diamond Audio DESMB8A

500W Peak (250W RMS) Loaded Single 8" Vented Amplified Enclosure

DESMB8A big
Go to item page Right Arrow Icon of Right Arrow

500W Peak (250W RMS) Loaded Single 8" Vented Amplified Enclosure

• 8" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Wired Remote Bass Level Control
• Speaker-level (high-level) input via RCA

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

$479.99

In stock.

JL Audio PowerWedge CS110LG-TW3

Sealed PowerWedge Enclosure with 10" TW3 Subwoofer

CS110LG-TW3 big
Go to item page Right Arrow Icon of Right Arrow

Sealed PowerWedge Enclosure with 10" TW3 Subwoofer

• Peak Power Handling: 800W
• RMS Power Handling: 400W
• Dual 4 Ohm Voice Coils
• Sealed Enclosure w/ Black Carpet Finish
• 5/8" MDF Construction

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

VIP Product Get $78.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
$779.99

In stock

Only 2 Left!

Used from: $662.99

Cerwin Vega H6E10DV

2000W Peak (500W RMS) Loaded Dual 10" Vented Passive Enclosure

H6E10DV big
Go to item page Right Arrow Icon of Right Arrow

2000W Peak (500W RMS) Loaded Dual 10" Vented Passive Enclosure

• Ported enclosure with 2 10" HED Series Passive Subwoofer
• 500 watts RMS (2000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 30" L x 13" H x 13" 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

2
List price $359.99
-17% $299.99

In stock.

Cerwin Vega H6TE10SV

300W Peak (150W RMS) Loaded Single 10" Vented Powered Subwoofer Enclosure

hs6te10sv big
Go to item page Right Arrow Icon of Right Arrow

300W Peak (150W RMS) Loaded Single 10" Vented Powered Subwoofer Enclosure

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

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $279.99
$269.99

In stock.

Pioneer TS-WX010A

160W Peak (50W RMS) Loaded Single 6.625" x 3.125" Amplified Compact Enclosure

TS-WX010A big
Go to item page Right Arrow Icon of Right Arrow

160W Peak (50W RMS) Loaded Single 6.625" x 3.125" Amplified Compact Enclosure

• 6-5/8" x 3-1/8" Amplified Loaded Subwoofer System
• 50 watts RMS
• Built-In Class D Amplifier
• Speaker-level inputs

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 $340.00
-41% $199.99

Available

Ships in 10-14 days

• 6-5/8" x 3-1/8" Amplified Loaded Subwoofer System
• 50 watts RMS
• Built-In Class D Amplifier
• Speaker-level inputs

Alpine S2-SB12V

1800W Peak (600W RMS) Loaded Single 12" Vented Subwoofer Enclosure

S2-SB12V big
Go to item page Right Arrow Icon of Right Arrow

1800W Peak (600W RMS) Loaded Single 12" Vented Subwoofer Enclosure

• Ported enclosure with 1 12" S Series Subwoofer
• 600 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• Linkable subwoofer enclosure
• Dimensions: 17" L x 14.62" H x 15" W

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

VIP Product Get $50.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $600.00
-17% $499.95

In stock

Only 3 Left!

Wet Sounds STEALTH AS-8

350W Peak Loaded Single 8" Sealed Amplified Marine Subwoofer Enclosure

STEALTH AS-8 big
Go to item page Right Arrow Icon of Right Arrow

350W Peak Loaded Single 8" Sealed Amplified Marine Subwoofer Enclosure

• 8" Amplified Loaded Subwoofer System
• 350 watts Peak
• Built-In Class D amplifier
• Variable Bass Boost
• Wired remote bass level controller

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

VIP Product Get $80.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
$799.99

Available

Ships in 10-14 days

• 8" Amplified Loaded Subwoofer System
• 350 watts Peak
• Built-In Class D amplifier
• Variable Bass Boost
• Wired remote bass level controller

DS18 GEN-X210LD

800W Peak (400W RMS) Loaded Dual 10" Ported Enclosure

GEN-X210LD big
Go to item page Right Arrow Icon of Right Arrow

800W Peak (400W RMS) Loaded Dual 10" Ported Enclosure

• Ported enclosure with 2 10" Gen-X Subwoofer
• 800 watts RMS (1600 watts Peak)
• Final Impedance: 2-ohm x 2 sets
• Dimensions: 30.71" L x 13.78" H x 11" W x 14" W2

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

VIP Product Get $42.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $503.99
-17% $419.95

In stock.

Cerwin Vega H6E10SV

1000W Peak (250W RMS) Loaded Single 10" Vented Enclosure

H6E10SV big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (250W RMS) Loaded Single 10" Vented Enclosure

• Ported enclosure with 1 10" HED Series Passive Subwoofer
• 250 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 20" L x 12.99" H x 12.01" 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

1
List price $239.99
-17% $199.99

In stock.

DS18 PU210A

700W Peak (350W RMS) Loaded Dual 10" Sealed Shallow Subwoofer Enclosure for Pick-up Trucks

PU210A big
Go to item page Right Arrow Icon of Right Arrow

700W Peak (350W RMS) Loaded Dual 10" Sealed Shallow Subwoofer Enclosure for Pick-up Trucks

• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In class D amplifier
• Variable bass boost
• Speaker-level inputs
• Wired remote bass level control

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

VIP Product Get $42.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $503.99
-17% $419.95

In stock.

DS18 DFPU110IX

1200W Peak (600W RMS) Loaded Single 10" Sealed Shallow Underseat Enclosure

DFPU110IX big
Go to item page Right Arrow Icon of Right Arrow

1200W Peak (600W RMS) Loaded Single 10" Sealed Shallow Underseat Enclosure

• Sealed enclosure with 1 10" IXS Shallow Series Subwoofer
• 600 watts RMS (1200 watts Peak)
• Shallow and compact enclosure construction
• Final Impedance: 2-ohm
• Dimensions: 18.1" L x 7.9" H x 14.1" W

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

$349.95

In stock.

Cerwin Vega H6E12DV

2400W Peak (500W RMS) Loaded Dual 12" Vented Passive Enclosure

H6E12DV big
Go to item page Right Arrow Icon of Right Arrow

2400W Peak (500W RMS) Loaded Dual 12" Vented Passive Enclosure

• Ported enclosure with 2 12" HED Series Passive Subwoofer
• 500 watts RMS (2400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 34" L x 15" H x 16" 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

1
List price $431.99
-17% $359.99

In stock.

Limited time!

Kicker DCWC102 (50DCWC102)

1000W Peak (500W RMS) Loaded Dual 10" Vented Subwoofer Enclosure

50DCWC102 big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (500W RMS) Loaded Dual 10" Vented Subwoofer Enclosure

• Ported enclosure with 2 10" CompC Series Subwoofer
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 14" H x 13-1/2" W x 16-1/4" W2

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

VIP Product Get $29.60 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $399.99
Save $104.03
-26% $295.96

Available

Ships in 10-14 days

Alpine SS-SB12

300W RMS Loaded Single 12" Sealed Shallow Enclosure

SS-SB12 big
Go to item page Right Arrow Icon of Right Arrow

300W RMS Loaded Single 12" Sealed Shallow Enclosure

• Sealed shallow enclosure with 1 12" S Series Subwoofer
• 300 watts RMS Power Rating
• Final Impedance: 2-ohm
• Dimensions: 22.25" L x 5.25" H x 13.125" W

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

VIP Product Get $60.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $720.00
-17% $599.95

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 Universal-fit Loaded Subwoofer Boxes in 1981 633CSi

    Q: Can I upgrade or change the Universal-fit Loaded Subwoofer Boxes in 1981 BMW 633CSi?

    A: Yes this page includes all the best Universal-fit Loaded Subwoofer Boxes that work in your 633CSi.

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

    1995 Suzuki Swift

    1981 BMW 633CSi

    1986 Dodge Daytona

    2025 Audi SQ8 e-tron

    1987 Ford Escort

    2018 Lexus RC300

    1981 Datsun 510

    2016 Buick Encore

    2020 Mazda CX-3

    1986 Jeep Scrambler

    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.