Get professionally built subwoofer enclosures for optimum sound performance. Wide selection of sub box types including Bandpass, vented and sealed.

Car Subwoofer Boxes

Get the most out of your subwoofer with a sealed, ported, or bandpass box/enclosure.
All Car Subwoofer Boxes
Angled & Truck Subwoofer Boxes
Ported & Vented Subwoofer Boxes
Sealed Subwoofer Boxes
Vehicle Specific Subwoofers & Boxes

Top Sellers in Car Subwoofer Boxes

Single 10" Sealed 3/4" MDF Car Subwoofer Enclosure Box Lined with Polyfil

• Single 10" Sealed MDF Enclosure
• High Quality 3/4" MDF Construction
• Gold Binding Post Terminals
• Durable Gray Carpeting
• Total Box Volume: 0.7 Cubic ft

$34.99

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15" Hatchback Style Single Medium Sealed Subwoofer Enclosure

15" Hatchback Style Single Small Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

25% Off a Sealed Enclosure with Your Subwoofer Purchase!

$39.99

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12" Single Small Pro Series Sealed Subwoofer Enclosure

• 12" Single Small Pro Series Sealed Subwoofer Enclosure
• Premium carpeted Finish
• Silver Spring Loaded Terminal Cups
• Completely Miter and Dado Panels
• Glued and Braced with Fasteners

$39.95

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Dual 10" Subwoofer Enclosure for 00-06 Chevy Silverado and GMC Sierra HD Crew Cab Trucks

• Dual 10" Down Firing Subwoofer Enclosure
• Designed Specifically For 2000-06 Chevy Silverado and GMC Sierra HD Crew Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$94.95

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1.065 cu ft Single 10" Ported Car Subwoofer Box Enclosure with Custom Blue Baffle

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard Construction
• High Gloss Blue Finish Panel
• Durable Black Carpet
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
• Total Box Volume: 1.065 Cubic Feet

FREE Vented Enclosure with Your Subwoofer Purchase!

$49.99

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10" Single Medium Pro Series Sealed Subwoofer Enclosure

10" Single Medium Pro Series Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

Get a FREE Sealed Enclosure with Your JL Subwoofer Purchase!

$39.95

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Single 10" Subwoofer Enclosure for 88-98 Chevy Silverado and GMC Sierra Extended Cab Trucks

• Single 10" Down Firing Subwoofer Enclosure
• Designed Specifically for 88-98 Chevy Silverado and GMC Sierra Extended Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$64.95

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12" Single Vented Square Subwoofer Enclosure for Kicker L5 and L7 Subwoofers

12" Single SPL Vented Square Subwoofer Enclosure for Kicker L5 and L7 Subwoofers • Premium Carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

50% Off Subwoofer Grill with Purchase!

$89.99

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12" Hatchback Style Single Small Sealed Subwoofer Enclosure

12" Hatchback Style Single Small Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

$32.99

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15" Single Medium Pro Series Sealed Subwoofer Enclosure

• 15" Single Small Pro Series Sealed Subwoofer Enclosure
• Premium carpeted Finish
• Silver Spring Loaded Terminal Cups
• Completely Miter and Dado Panels
• Glued and Braced with Fasteners

$49.99

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Dual 10" Subwoofer Enclosure for 03-07 Chevy Silverado and GMC Sierra Crew Cab Trucks

• Dual 10" Down Firing Subwoofer Enclosure
• Designed Specifically For 03-07 Chevy Silverado and GMC Sierra Crew Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$109.99

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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 Ohms
• Vented Reinforcement Collar
• Elevated Frame Cooling
• Floating Cone Attach Method (FCAM)

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

FREE Sound Deadener with Subwoofer Purchase!

$279.99

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Single 10" BassWedge Loaded Ported Enclosure with Gray Carpet Finish

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

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

Get 25% Off Sound Deadener with Subwoofer Purchase!

$199.99

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8" Single Universal Truck Style Sealed Subwoofer Enclosure

8" Single Universal Truck Style Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

Add an Atrend 8" Subwoofer Enclosure!

$34.95

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10" Single Universal Truck Style Vented Subwoofer Enclosure

10" Single Universal Truck Style Vented Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

$49.99

IN STOCK

12" Single Universal Truck Style Sealed Subwoofer Enclosure

• 12" Single Universal Truck Style Sealed Subwoofer Enclosure
• Premium carpeted Finish
• Silver Spring Loaded Terminal Cups
• Completely Miter and Dado Panels
• Glued and Braced with Fasteners

$39.95

IN STOCK

Dual 10" Subwoofer Enclosure for 2002 - 2013 Chevy Avalanche and Cadillac Escalade

• Dual 10" Subwoofer Enclosure
• Designed Specifically For 2002 - 2013 Chevy Avalanche and Cadillac Escalade
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$89.95

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Single 10" Vented Subwoofer Enclosure for 99-07 Chevy Silverado and GMC Sierra Extended Cab Trucks

• Single 10" Down Firing Vented Subwoofer Enclosure
• Designed Specifically For 99-07 Chevy Silverado and GMC Sierra Extended Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$69.99

IN STOCK

300W Peak (150W RMS) Single 10" 4-Ohm Comp Series Subwoofer Loaded Truck Box

• 600W Peak
• 150W RMS
• 2 Ohm Final Impedance
• SoloKon Cone
• Polyfoam Ribbed Surround
• Monogrammed Carbon Fiber Front
• Tough Black Carpeting
• 3/4" MDF Construction

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

$99.95

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Single 15" Black Carbon Fiber Vented Subwoofer Enclosure

• 15" Single Chambered Vented Black Subwoofer Enclosure
• Carbon Fiber Painted Finish
• Silver Spring Loaded Terminal Cups
• Completely Miter and Dado Panels
• Embroidery Finish
• Color: Carbon Fiber Black

$129.99

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Car Subwoofer Boxes Information

Car Subwoofer Enclosure & Car Sub Box Information:

It is often overlooked, but every great car audio system features a subwoofer enclosure purposely selected to maximize subwoofer performance. It may surprise you to learn that a sub box can make or break the perfect setup. We have a wide variety of professionally constructed sub boxes, built for your convenience and designed to perfectly complement your personalized system. We advise you to choose a sealed, ported or bandpass box based on your car subwoofer specifications and available vehicle space.

Sealed enclosures are smaller than most other types of sub boxes. They do not allow air to escape from the box, thus making it harder for the sub to move in and out. This increases the transient response, meaning tighter bass and greater sound accuracy. These boxes also have good power handling, as it is harder for the sub to bottom out? (excursion beyond peak excursion), which makes it less risky to push the subs to thump to the beat. However, since the airwaves cannot escape from the box, the sub is less efficient, meaning less sound reproduction. Their tightly sealed design also doesn't allow the speaker's motor structure to cool down as well as it does in other boxes or free air setups.

Ported boxes, also known as vented boxes, are enclosures that are designed with a port tuned to a specific frequency. They are more efficient than sealed enclosures because the back waves are channeled into the listening environment along with the front waves, which gives you more sound output than sealed enclosures produce. The ports in these enclosures help produce deeper bass up to the tuned frequency. However, power handling is poor below the tuned frequency and as such, woofer damage can occur. Further, there is no internal pressure working against the speaker, giving it worse transient response and speaker damping than a sealed enclosure. Finally, prefabricated boxes are not built with ports tuned to manufacturer's recommendations. This may make reproduction sound muddy or sloppy. Also, the air exiting the ports will at times produce a medium to loud noise, called port noise. To summarize, ported boxes give you a higher sound output and will generally have a better low frequency extension than sealed boxes. On the downside, they are larger and have poor power handling below their tuned frequency. They also have a reduced transient response and may generate port noise.

A bandpass enclosure is basically a combination between a sealed and vented enclosure. With one sealed and one ported chamber, bandpass boxes produce great power handling as well as a good low frequency response. However, you should note that a bandpass box should be specifically designed for your subwoofer(s). Furthermore, they are not as efficient as ported boxes, and since the ports in bandpass boxes are not tuned to speaker requirements, most speakers will have a better all around sound in ported or sealed enclosures.

When trunk space is at a minimum, you might consider using free-air subwoofers. Free-air subwoofers are specially designed to perform without an enclosure. It is usually the easiest and least expensive way to add a subwoofer to most sedans. No enclosure is required, you just use a board mounted on the rear deck or in the trunk along with the subwoofer. The downside is that you will experience a worse low-frequency response, or simply put, less power handling and less bass. You also get the least amount of transient response. You must also be sure that the baffle board is properly sealed and that the trunk or surrounding areas are properly dampened, otherwise bass cancellation will occur (loss of bass). This is why, space allowing, we recommend that you invest in an enclosure to ensure optimal performance.

Another small investment for better subwoofer performance is our polyester fiber fill, which slows down back waves inside of the box, making the subwoofer perform as though it were in a bigger enclosure. We recommend that you use approximately 1 pound of fill per cubic foot of box volume. In enclosures where the fiber fill may blow out of a port, a light multipurpose adhesive should be used to secure the fill to the wall linings.

If you need help selecting the proper box for your subs, give us a call at 1-877-289-7664. Our staff will help you in selecting the right setup so that you can start building your dream car audio system today!

Useful Subwoofer Enclosure Resources: