Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Subwoofers
  4. Discontinued Empty Car Subwoofer Enclosures & Boxes
  5. Discontinued Sealed Subwoofer Boxes

Discontinued Sealed Subwoofer Boxes for your 2004 Focus close

Filters
Subwoofer enclosures ✕
Clear Filters
Reset Done
Show products that do not fit
Product Type
Subwoofer enclosures,
Price Range
Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Subwoofer Cutout Shape
This is the shape of the enclosures cutout hole and defines the style of subwoofer that can be installed.
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
Cutout Diameter or Length
The actual diameter of the hole in the subwoofer box. Length is the measured length per side of a square subwoofer or speaker opening.
Maximum Speaker Depth
Your subwoofer or speaker must not exceed this dimension in order to properly mount in this enclosure.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition

Your Vehicle

close
Universal fit Icon
Explore universal-fit product options for your 2004 Focus
Vehicle-specific solutions are not available in this category.
Update vehicle | Remove vehicle | Vehicle store

Shop the Category

filter-icon Filters & Sort
You are currently viewing discontinued products.

Atrend 12TKD Open Box Complete

12" Dual Universal Truck Style Sealed Subwoofer Enclosure

12TKD big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Atrend 12TKD Open Box Complete

12" Dual Universal Truck Style Sealed Subwoofer Enclosure

• Item Condition: Open Box Compete
12" Dual Universal Truck Style Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

• Item Condition: Open Box Compete
12" Dual Universal Truck Style Sealed Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

Sonic Sub Box: 1HK15-2.0 (GRAY)

Single 15" Square Hole Subwoofer Enclosure for Kicker 15" L3 or L7 Solo-Baric Subwoofer

1HK15-2.0-GRAY big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 1HK15-2.0 (GRAY)

Single 15" Square Hole Subwoofer Enclosure for Kicker 15" L3 or L7 Solo-Baric Subwoofer

• GRAY CARPET: High quality 3/4" MDF Construction
• Fits Kicker 15" Solo-Baric L3 or L7
• Fully carpeted
• Gold plated terminals

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1

• GRAY CARPET: High quality 3/4" MDF Construction
• Fits Kicker 15" Solo-Baric L3 or L7
• Fully carpeted
• Gold plated terminals

Sonic Sub Box: 1SL10-1.0 (BLACK CARPET)

Single 10" Sealed MDF Enclosure

1SL10-1.0-BLACK big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 1SL10-1.0 (BLACK CARPET)

Single 10" Sealed MDF Enclosure

• Single 10" Sealed MDF Enclosure
• Holds one 10" subwoofer
• 3/4 MDF (Medium Density Fiberboard) Construction
• Durable BLACK carpeting
• Gold Terminals
• Internal Box Volume: 1.01 Cubic ft.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

11

• Single 10" Sealed MDF Enclosure
• Holds one 10" subwoofer
• 3/4 MDF (Medium Density Fiberboard) Construction
• Durable BLACK carpeting
• Gold Terminals
• Internal Box Volume: 1.01 Cubic ft.

MTX Audio Bass Slammer BS212S

Dual 12" Sealed Unloaded Enclosure

BS212S big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

MTX Audio Bass Slammer BS212S

Dual 12" Sealed Unloaded Enclosure

Heavy Duty Dual 12" Sealed Unloaded Bass Slammer Enclosure • Sealed Hatchback Style Enclosure For Two Subwoofers • 5/8" Medium Density Fiberboard (MDF) With Durable Gray Carpet Covering • 1 Cubic Foot Per Chamber

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7

Heavy Duty Dual 12" Sealed Unloaded Bass Slammer Enclosure • Sealed Hatchback Style Enclosure For Two Subwoofers • 5/8" Medium Density Fiberboard (MDF) With Durable Gray Carpet Covering • 1 Cubic Foot Per Chamber

House Brand 12SSPF

Single 12" Sealed Subwoofer Enclosure

12SSPF big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

House Brand 12SSPF

Single 12" Sealed Subwoofer Enclosure

12" Single Sealed Subwoofer Enclosure • Box Volume: 1.0 Cubic Feet • Gold-Plated Speaker Terminals • Pre-Lined with Poly-Fil • Black Carpet

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

12

12" Single Sealed Subwoofer Enclosure • Box Volume: 1.0 Cubic Feet • Gold-Plated Speaker Terminals • Pre-Lined with Poly-Fil • Black Carpet

Sonic Sub Box: 1SL10-1.0 (GRAY CARPET)

Single 10" Sealed MDF Enclosure

1SL10-1.0-GRAY big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 1SL10-1.0 (GRAY CARPET)

Single 10" Sealed MDF Enclosure

Single 10" Sealed MDF Enclosure • Holds one 10" subwoofer • 3/4 MDF (Medium Density Fiberboard) Construction • Durable GRAY carpeting • Gold Terminals • Internal Box Volume: 1.01 Cubic ft.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

6

Single 10" Sealed MDF Enclosure • Holds one 10" subwoofer • 3/4 MDF (Medium Density Fiberboard) Construction • Durable GRAY carpeting • Gold Terminals • Internal Box Volume: 1.01 Cubic ft.

Absolute SAG12

Single 12" Subwoofer Angled Truck Box/Enclosure

SAG12 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Absolute SAG12

Single 12" Subwoofer Angled Truck Box/Enclosure

12" Angled Truck Box • Perfect for Trucks and Small Cars • 0.53 Cubic Feet of Box Volume • Pre-Lined with PolyFil • Black Carpet • Fits Most 12" Shallow-Mount Subwoofers

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4

12" Angled Truck Box • Perfect for Trucks and Small Cars • 0.53 Cubic Feet of Box Volume • Pre-Lined with PolyFil • Black Carpet • Fits Most 12" Shallow-Mount Subwoofers

15SQB Subwoofer Enclousure (MDFD15)

Dual 15" 3/4 MDF Sealed Subwoofer Enclosure

MDFD15 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

15SQB Subwoofer Enclousure (MDFD15)

Dual 15" 3/4 MDF Sealed Subwoofer Enclosure

3/4" High-quality MDF material and fully carpeted • Works great with most 15" subs • gold/silver post connectors • holds 2 15" subwoofers

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7

3/4" High-quality MDF material and fully carpeted • Works great with most 15" subs • gold/silver post connectors • holds 2 15" subwoofers

Sonic Sub Box: 2SL12-2.7 (Gray)

Dual 12" Sealed MDF Enclosure

2SL12-2.7-GRAY big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 2SL12-2.7 (Gray)

Dual 12" Sealed MDF Enclosure

Dual 12" Bottom Vented MDF Enclosure • Holds Two 12" Subwoofers • 3/4 MDF (Medium Density Fiberboard) Construction • Durable Gray Carpeting • Gold Terminals • Internal Box Volume: 3.06 cubic ft.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3

Dual 12" Bottom Vented MDF Enclosure • Holds Two 12" Subwoofers • 3/4 MDF (Medium Density Fiberboard) Construction • Durable Gray Carpeting • Gold Terminals • Internal Box Volume: 3.06 cubic ft.

Absolute SS-101

Single 10" Sealed Subwoofer Enclosure

SS-101 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Absolute SS-101

Single 10" Sealed Subwoofer Enclosure

• 10" Absolute Sealed Square Subwoofer Enclosure
• Black Carpet
• Poly-Fill Inside
• Gold Plated Screw Terminals
• 3/4" Medium Density Fiberboard
• Banana Clip Ready

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

10

• 10" Absolute Sealed Square Subwoofer Enclosure
• Black Carpet
• Poly-Fill Inside
• Gold Plated Screw Terminals
• 3/4" Medium Density Fiberboard
• Banana Clip Ready

Sonic Sub Box: 2SL10-2.0 (Black)

Dual 10" Sealed MDF Enclosure

2SL10-2.0-BLACK big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 2SL10-2.0 (Black)

Dual 10" Sealed MDF Enclosure

Dual 10" Sealed MDF Enclosure • Holds Two 10" Subwoofers • 3/4 MDF (Medium Density Fiberboard) Construction • Durable Black Carpeting • Gold Terminals • Internal Box Volume: 2.0 Cubic Ft.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2

Dual 10" Sealed MDF Enclosure • Holds Two 10" Subwoofers • 3/4 MDF (Medium Density Fiberboard) Construction • Durable Black Carpeting • Gold Terminals • Internal Box Volume: 2.0 Cubic Ft.

Ground Shaker SQ 1 12-GRAY

12” Pro Single Sealed Square Subwoofer Box

SQ 1 12-GRAY big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Ground Shaker SQ 1 12-GRAY

12” Pro Single Sealed Square Subwoofer Box

• 12” Pro Single Sealed Square Subwoofer Box
• 11/16" Medium Density Fiberboard Construction
• Total box volume: 1.25 cubic feet

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1

• 12” Pro Single Sealed Square Subwoofer Box
• 11/16" Medium Density Fiberboard Construction
• Total box volume: 1.25 cubic feet

Dual 12" 3/4" MDF Sealed Subwoofer Enclosure (OPEN BOX UNIT)

(MINOR ASTHETICAL DAMAGE) 12SQB (MDFD12)

MDFD12 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Dual 12" 3/4" MDF Sealed Subwoofer Enclosure (OPEN BOX UNIT)

(MINOR ASTHETICAL DAMAGE) 12SQB (MDFD12)

3/4" High-quality MDF material and fully carpeted • Works great with most 12" subs • gold-plated post connectors • holds 2 12" subwoofers

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3/4" High-quality MDF material and fully carpeted • Works great with most 12" subs • gold-plated post connectors • holds 2 12" subwoofers

Absolute SS-15

Single 15" Sealed Subwoofer Enclosure

SS-15 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Absolute SS-15

Single 15" Sealed Subwoofer Enclosure

15" Sealed Subwoofer Enclosure • Black Carpet • Poly-Fill Inside • Gold Plated Binding Posts • Banana Clip Ready • Made from 3/4" Medium Density Fiberboard

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7

15" Sealed Subwoofer Enclosure • Black Carpet • Poly-Fill Inside • Gold Plated Binding Posts • Banana Clip Ready • Made from 3/4" Medium Density Fiberboard

Sonic Sub Box: 1SL10-1.4 (Gray)

Single 10" Sealed MDF Enclosure

1SL10-1.4-GRAY big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: 1SL10-1.4 (Gray)

Single 10" Sealed MDF Enclosure

Single 10" Sealed MDF Enclosure • High Quality 3/4" MDF Construction • Gold Binding Post Terminals • Durable Gray Carpeting • Box Volume: 1.0 Cubic Ft

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3

Single 10" Sealed MDF Enclosure • High Quality 3/4" MDF Construction • Gold Binding Post Terminals • Durable Gray Carpeting • Box Volume: 1.0 Cubic Ft

Ground Shaker SQXL 1 15-BLACK

15” Pro Single Sealed Extra Large Subwoofer Box

SQXL 1 15-BLACK big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Ground Shaker SQXL 1 15-BLACK

15” Pro Single Sealed Extra Large Subwoofer Box

• 15” Single Sealed Extra Large Subwoofer Box
• 3/4" Medium Density Fiberboard Construction
• Total box volume: 2.63 cubic feet

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3

• 15” Single Sealed Extra Large Subwoofer Box
• 3/4" Medium Density Fiberboard Construction
• Total box volume: 2.63 cubic feet

Sonic Sub Box: OCFRD03-12

Dual 12" Sealed Subwoofer Enclosure

OCFRD03-12 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Sonic Sub Box: OCFRD03-12

Dual 12" Sealed Subwoofer Enclosure

Dual 12" Sealed Enclosure • Box Volume: 2.2 Cubic Feet • Made From Quality Materials

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1

Dual 12" Sealed Enclosure • Box Volume: 2.2 Cubic Feet • Made From Quality Materials

Hatchss12

Single 12" Hatchback Style MDF Enclosure

HATCHS12 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Hatchss12

Single 12" Hatchback Style MDF Enclosure

Single 12" Hatchback Style MDF Enclosure

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

Single 12" Hatchback Style MDF Enclosure

Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)-OPEN BOX

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (0.77 cu ft airspace 10SQTC)

MDFS10 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)-OPEN BOX

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (0.77 cu ft airspace 10SQTC)

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

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

Absolute KSB15S

Single 15" MDF Square-Hole Sealed Enclosure/Box for Kicker L7/L3 Solo-Baric Subwoofer

KSB15S big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Absolute KSB15S

Single 15" MDF Square-Hole Sealed Enclosure/Box for Kicker L7/L3 Solo-Baric Subwoofer

15" Square Sealed Enclosure for Kicker Solo-Baric L3 and L7 Subwoofers • Pre-lined with Poly-fil • Gold plated Terminals • Exceptional black Carpet Finish • Banana-clip Ready

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4

15" Square Sealed Enclosure for Kicker Solo-Baric L3 and L7 Subwoofers • Pre-lined with Poly-fil • Gold plated Terminals • Exceptional black Carpet Finish • Banana-clip Ready

Prev 3 4 5 6 7 Next

Items per page: 20 40 60

    Clear all

    FAQ Frequently asked questions in Discontinued Sealed Subwoofer Boxes

    Sealed Subwoofer Boxes Frequently Asked Questions (FAQ)
    A sealed subwoofer box is a type of subwoofer enclosure that is completely sealed off from the outside air. This type of enclosure is designed to produce tight, accurate bass response.
    There are several benefits to using a sealed subwoofer box. First, sealed subwoofer boxes produce tight, accurate bass response. Second, sealed subwoofer boxes are relatively easy to build and install. Third, sealed subwoofer boxes are relatively inexpensive.
    There are a few drawbacks to using a sealed subwoofer box. First, sealed subwoofer boxes do not produce as much bass output as ported subwoofer boxes. Second, sealed subwoofer boxes can be more difficult to tune than ported subwoofer boxes. Third, sealed subwoofer boxes can be more sensitive to changes in air temperature and humidity.
    When choosing a sealed subwoofer box, you should consider the following factors: The size of your subwoofer The amount of bass you want The space you have available Your budget Your personal preferences
    Installing a sealed subwoofer box is a relatively easy process. Most sealed subwoofer boxes come with instructions, and the installation process should only take a few hours. Here are some additional tips for installing a sealed subwoofer box: Make sure the box is secure and will not move around. Seal any gaps or openings in the box to prevent air leaks. Position the subwoofer in the box so that the cone is facing forward. Connect the subwoofer to your car stereo. Experiment with different settings to find the sound you like.
    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?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    1982 Audi 5000

    1997 GMC Sonoma

    2009 Bentley Continental

    2012 Hyundai Veloster

    2004 Ford Focus

    2018 Chevrolet Bolt EV

    1957 Chrysler Windsor

    1988 Eagle Premier

    2003 Nissan Maxima

    1990 Mazda 929

    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

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2004 Focus
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    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
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo