Loaded Subwoofer Enclosures | Subwoofer with Box | Loaded Car Subs

Spend $200+ and SAVE 10% with code FALL10* details

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Sitewide coupons and discounts are not applicable to certain brands, products or combos. Offers exclude the following brands*: JL Audio®, Wet Sounds®, Focal®, Kicker®, Pioneer® Car Stereos and Rockford Fosgate® Punch, Power, and Marine products. Product exclusions: ILX-W650 and DDX9705S.

*Contact our toll-free expert line for JL Audio®, Wet Sounds®, Focal® and Rockford Fosgate® and other bands as we guarantee we will beat any other Authorized Retailer.

FALL10 coupon is for 10% off your purchase of $200 or more with a maximum discount of $25

Coupons are not valid for business/wholesale sales, installation services, shipping, delivery or gift cards. Sonic Electronix reserves the right to limit quantities per account, product or offer. Offers may be valid only in the U.S. Coupons cannot be combined with other coupons, select promo bundles, combos, savings certificates, special offer price matches, or combined with other discounts. X

Car Subwoofer Kits with a Sub Box

Save time and money by purchasing a sub and box together. We carry enclosed sub boxes with a single subwoofer, as well as enclosures with 2 subs or more. Additionally, we have complete packages that also include a power amplifier and amp kit.
All Loaded Car Sub Boxes
Quick Bass Solutions
Powered Car Subwoofer Boxes
Sealed & Loaded Car Sub Boxes
Ported & Loaded Car Sub Boxes
Bandpass Loaded Car Sub Boxes
Angled & Truck Loaded Sub Boxes
Subwoofer Bass Tubes
Vehicle Specific Custom Subwoofers & Boxes
NVX B.O.O.S.T. Boxes
Kicker Powerstage Loaded Enclosures
MTX ThunderForm Enclosures
JL Audio Stealthboxes

Top Sellers in Car Subwoofer Kits with a Sub Box

550W Max (200W RMS) 10" Powered 2 Ohm Car Subwoofer

• RMS: 200 watts
• Remote Subwoofer Control Included
• RCA and High-Level Inputs
• Delayed Soft Remote Turn On
• Variable Bass Boost & LPF
• Dimensions: 13.60" L x 9.60" W x 2.60" H

$169.99

IN STOCK

1200 Watt Complete Bass Package with Two 12" Subs in Ported Box, Monoblock Amplifier and Amp Kit (BPKG212 v2)

• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 12" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

10% off a 1.0 Farad Capacitor with Amp Purchase!

$179.99

IN STOCK

VEGA 12" Shallow Powered Active Subwoofer, Spare Tire Application

• 600W Max
• 200W RMS
• Slim Design Allows Mounting Under Vehicle Seat
• High Output Slim Profile Subwoofer
• Cast Aluminum Enclosure
• Subsonic and Low Pass Filters
• Wired Bass Knob Included

FREE 8 Gauge Installation Kit with Purchase!

$294.99

IN STOCK

Only 2 Left!

1200W 10" Shallow-Mount TS Series Single 4 ohm Loaded Enclosure

• 10" Shallow Mount Loaded Enclosure
• Peak Power: 1200W
• MICA Injection Molded Resin Cone
• Sealed Enclosure
• Dimensions: 13-7/8" D x 18-5/8" W x 6" H

30% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$109.99

IN STOCK

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

• 800W Peak
• 400W RMS
• 48oz. Magnet
• Heavy 5/8" MDF Construction
• Black Carpeting

50% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$149.95

IN STOCK

8" Quick Bass Universal System Powered/Amplified Subwoofer BOOST System - Universal B.O.O.S.T. System

• Low Profile Powered Subwoofer System
• 100 Watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

10% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$119.99

IN STOCK

1200W Max (250W RMS) Single 10" Sealed Subwoofer Bass Tube Enclosure

• 1200W Max Single 10" Sealed Subwoofer Enclosure
• 10" Subwoofer
• Tube Enclosure with Black Carpet Finish
• Push SPK Terminals
• Enclosure Dimensions: 11.22"W x 23.6" D

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

Receive 10% off the Alpine SWT-S10 with your purchase!

$99.99

IN STOCK

Only 3 Left!

  • 5.0
1 review

1300W Max (350W RMS) TS Series Single 12 Sealed Subwoofer Enclosure w/ Built-In Amplifier

• 1300W Max Single 12" Sealed Subwoofer Enclosure with Built-In Amplifier
• 12" Series Subwoofer
• Built-In 1300W Max (350W RMS) Class D Amplifier

$139.99

IN STOCK

  • 5.0
1 review

10" 600 Watt Shallow-Mount Angled Amplified Loaded Powered Subwoofer Enclosure

• Shallow-mount 10-inch Amplified Loaded 600W Max Subwoofer Box
• RMS: 200W
• Non-press paper cone
• Specially treated foam surround
• 4 Layer Dual Voice Coil

10% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$79.99

IN STOCK

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Heavy 5/8" MDF Construction
• Black Carpeting

20% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$249.95

IN STOCK

Only 2 Left!

  • 4.6
5 reviews

VEGA 12" Powered Active Subwoofer, Spare Tire Application

• 600W Max
• 200W RMS
• Slim Design Allows Mounting Under Vehicle Seat
• High Output Slim Profile Subwoofer
• Cast Aluminum Enclosure
• Subsonic and Low Pass Filters
• Wired Bass Knob Included

Get a Free BPK8 With Your Purchase of Select Subwoofers!

$294.99

IN STOCK

  • 5.0
2 reviews

Single 12-inch 750W Loaded Ported Car Subwoofer with Multi-Color LED And An Autotek 750 Watt Amplifier

• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• Final Impedance: 4 ohms
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

$144.98

IN STOCK

Only 1 Left!

500 Watt System with 10" Sub in Ported Box, Monoblock Amplifier and Amp Kit (BPKG110 v2)

• Includes Everything You Need: Subs, Box, Amp & Wires
• 10" Belva Subwoofer
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

10% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$109.99

IN STOCK

  • 4.7
6 reviews

600W Max (250W RMS) 12" Under Seat Powered Subwoofer Enclosure

• 600W Max
• 250W RMS
• Slim Design Allows Mounting Under Vehicle Seat
• High Output Slim Profile Subwoofer
• Cast Aluminum Enclosure
• Subsonic and Low Pass Filters
• Wired Bass Knob Included

$203.99

IN STOCK

  • 4.0
1 review

2000W Max (500W RMS) HED Series Dual 10" Loaded Slot-Vented Enclosure

• 2000W Max HED Series Bass kit
• 2 10" HED Series Single 2 Ohm Subwoofers
• Carbon Fiber Polypropylene cones
• Unimount gasket surrounds
• 3/4" MDF construction

$187.99

IN STOCK

Only 3 Left!

  • 5.0
1 review

1200W Max CompC Double 12" Vented Subwoofer Enclosure

• 1200W Max Double 12" Vented Subwoofer Enclosure
• 12" COMPC Subwoofer
• Thick MDF Construction with Thick Black Carpet
• Spring-Loaded Binding Post Terminals
• Enclosure Dimensions: 11-7/16" TD x 14-5/8" BD x 17-1/2" W x 16" H

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

GET 10% off select Kicker Loaded Enclosures with purchase!

$254.96

IN STOCK

Passive 1200W 12" GT Series 4-Ohm Loaded Ported Bandpass Subwoofer Enclosure with Red LED Illumination

• 1200W Single 12" Bandpass Subwoofer Enclosure
• Bandpass Vented Enclosure
•Black Carpet Finish with Acrylic Window
• Enclosure Dimensions: 15.75" D x 25.59" W x 19.01" H

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

$219.95

IN STOCK

1000W Complete Bass Package with Two 10" Subs in Ported Box, Monoblock Amplifier and Amp Kit (BPKG210 v2)

• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 10" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

10% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$159.99

IN STOCK

  • 4.8
5 reviews

250 Watt Peak 8" Powered Under-Seat Compact Subwoofer Enclosure System

• 125 Watts RMS x 1 @ 4 ohms
• 250 Watts RMS x 1 @ 2 ohms
• Efficient Class D Amplifier
• Proprietary, shallow-profile woofer
• Speaker-level (high-level) inputs with Audio Sense Auto-on
• Variable Bass Boost: 0 to +9 dB bass boost at 70 Hz

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

Get a FREE Remote Bass Knob with Purchase

$299.95

IN STOCK

  • 5.0
2 reviews

Single 12-inch 750W Loaded Ported Car Subwoofer with Multi-Color LED and Remote

• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• Final Impedance: 4 ohms
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

50% Off True Spec EnvyFlex Speaker Wire with Purchase!

$89.99

IN STOCK

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Car Subwoofer Kits with a Sub Box Information

Information about Enclosures loaded with Subwoofers: We carry both non-amplified and amplified boxes loaded with subs. Amplified subwoofer enclosure boxes include an amplifier specifically designed for a subwoofer and vice versa. Either way, you save plenty of trunk space with these combo packages, especially if you buy angled enclosures loaded with subs. These boxes allow you to squeeze subs behind your vehicle's seats. You can also buy vehicle specific subwoofer boxes loaded with subs such as our JL Audio Stealthboxes or our MTX ThunderForm enclosures. These custom built subwoofer boxes are designed to match your vehicle's dimensions and interior.