FREE Shipping
FREE Tech Support
Award-Winning Support
60-Day Returns
Learn More ยป
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
Bandpass Subwoofer Boxes
Ported & Vented Subwoofer Boxes
Sealed Subwoofer Boxes
Vehicle Specific Subwoofers & Boxes

Top Sellers in Car Subwoofer Boxes

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.0 cu ft airspace 12SQTC)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

FREE Sealed Enclosure with Your Subwoofer Purchase!

$39.99

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 AB Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

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

$129.99

IN STOCK

12" Sealed Subwoofer Enclosure

• Will fit most 12" subwoofers
• Approx 1.25 cubic feet of air space
• Provides better subwoofer sound quality
• Pre-wired with power cables
• Tightly sealed subwoofer enclosure to prevent air leaks

$24.99

IN STOCK

Non-Amplified 10" Ported Subwoofer Bass Tube with Jet Black Paint Finish

• Bazooka Non-Amplified 10" Ported Subwoofer Bass Tube
• Built-in 2" Dual Voice Coil
• Peak Power: 500 Watts
• RMS Power: 250 Watts
• 4 Ohm Impedance
• Nickel-Plated Thumb Screw Terminals
• Jet Black Paint Finish
• Plastic Woofer Grille

Add a Sound Dampening Kit with Your Subwoofer Purchase!

$159.99

IN STOCK

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.2 cu ft airspace 10SQTC)

• 10" 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
• 1.2 Cubic ft Box Volume

Get a FREE Sealed Enclosure with Your Subwoofer Purchase!

$34.99

IN STOCK

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

Add a Sound Dampening Kit with Your Subwoofer Purchase!

$109.99

IN STOCK

1 Pair of 6" X 9" Speaker Boxes Made with 3/4" Hardwood MDF

1 Pair of 6" x 9" Speaker Enclosure • 4" Hardwood MDF Construction • Silver Spring Loaded Terminal Cups • Premium carpeted finish • Designed for 6" x 9" Speakers

Get 50% off a Pair of Atrend 6x9 Speaker Boxes!

$24.95

IN STOCK

15-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.9 cu ft airspace 15SQTC)

• 15" Sealed Subwoofer Enclosure
• 3/4" High Quality MDF
• Durable Black Carpeting
• Terminal Cup Installed With Gold Posts
• Internal Box Volume: 1.90 Cubic FT

Save 40% on a Sealed Enclosure with Your Subwoofer Purchase!

$44.99

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

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

IN STOCK

1.42 Total Cu Ft - Dual 10" 3/4" MDF Ported Subwoofer Box Enclosure with Custom Blue Baffle

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard Construction
• Satin Blue Finish Panel
• Durable Black Carpet
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
• Total Box Volume: 1.42 Cubic Feet

$59.99

IN STOCK

15" Single Pro Series Vented SPL Subwoofer Enclosure

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

Add a Vented Enclosure with Your Subwoofer Purchase!

$99.99

IN STOCK

Only 2 Left!

12" Dual Pro Series Vented Subwoofer Enclosure

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

$79.99

IN STOCK

15" Single Pro Series Vented Subwoofer Enclosure

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

Add a Vented Enclosure with Your Subwoofer Purchase!

$69.99

IN STOCK

1.42 Total Cu Ft - Dual 10" 3/4" MDF Ported Subwoofer Box Enclosure with Custom Black Baffle

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard Construction
• Satin Black Panel
• Durable Black Carpet
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
• Total Box Volume: 1.42 Cubic Feet

$59.99

IN STOCK

Dual 12" Subwoofer Enclosure for 99-07 Chevy Silverado and GMC Sierra Extended Cab Trucks

• 12" Dual Medium Down-Firing Subwoofer Enclosure
• For Select GM Trucks
• Designed Specifically For Chevy Silverado or GM Sierra Extended Cabs 1999-2007
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$79.99

IN STOCK

Single 12" Subwoofer Enclosure for 02-14 Dodge Ram Quad Cab Trucks

• Single 12" Down Firing Subwoofer Enclosure
• Designed Specifically For 02-14 Dodge Ram Quad Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$63.99

IN STOCK

Dual 10" Subwoofer Enclosure for 2002-2014 Dodge Ram Quad Cab Trucks

• Dual 10" Down Firing Subwoofer Enclosure
• Designed Specifically For 2002-2014 Dodge Ram Quad Cab Trucks
• Premium Carpeted Finish
• Glued & Braced MDF Construction
• Rounded Edges

$88.99

IN STOCK

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

$88.99

IN STOCK

Single 12" Slammer Series Vented Subwoofer Enclosure (Coated Finish)

• 12" Medium Vented Subwoofer Enclosure
• Coated Tough Guard Finish
• CNC Grooved Custom Finish
• Miter & Dado Groove Panels
• Rounded Edges

$119.95

IN STOCK

Load More

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: