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  1. Home
  2. Car Audio & Electronics
  3. Car Subwoofers
  4. Custom-fit Subwoofer Boxes
  5. All Custom-fit Subwoofer Boxes

All Custom-fit Subwoofer Boxes for your 1977 RX-4 close

Shop custom-fit, vehicle-specific subwoofer boxes guaranteed to fit your car, truck, or SUV. Choose from loaded, amplified, and powered solutions.

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Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
Type of Enclosure
Some of our Vehicle Specific enclosures are loaded with a subwoofer and an amplifier, some are only loaded with a subwoofer, while some are empty boxes.
Total Peak Power Handling
This is the Total Peak Power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total peak power handling for all of the subs combined.

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements.
Total RMS Power Handling
This is the total RMS power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total RMS power handling for all of the subs combined.

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend giving your subwoofer(s) 75% - 90% of the recommended RMS rating.
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Final Wired Impedance
This is the final impedance of the system as the amplifier will see it. If the final impedance is for two sets, it means that the enclosure has two sets of terminals at the listed impedance.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Condition
Availability

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JL Audio Stealthbox® SB-D-5GRAMQC/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2020-2025 1500

SB-D-5GRAMQC/10TW3 big
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JL Audio Stealthbox® SB-D-5GRAMQC/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2020-2025 1500

• 2020-Up RAM 1500 Quad Cab models
• 800 Watts RMS
• Installs under the rear seat

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No Fit Icon Doesn't fit your RX-4

List price $2299.99
-15% $1,954.99

In stock.

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JL Audio Stealthbox® SB-POL-RETX-10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2015-2016 Ranger ETX

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JL Audio Stealthbox® SB-POL-RETX-10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2015-2016 Ranger ETX

• Custom Stealthbox Enclosure with One 10TW3-D4 Subwoofer
• 400W RMS
• For 2015-Up Polaris Ranger ETX Vehicles
• Mounted Beneath the Driver's Seat
• Fiberglass and Weatherproof Enclosure
• Front-Firing Design • Wired for 2 Ohm Load

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No Fit Icon Doesn't fit your RX-4

List price $949.99
-15% $807.49

Available

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JL Audio Stealthbox® SB-POL-RZG2R/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2014-2024 RZR XP and RZR 4 900 EPS LE / 4 900 EPS / 900 EPS XC Edition / 900 XC Edition

SB-POL-RZG2R/10TW3 big
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JL Audio Stealthbox® SB-POL-RZG2R/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2014-2024 RZR XP and RZR 4 900 EPS LE / 4 900 EPS / 900 EPS XC Edition / 900 XC Edition

• 400W Single 10" Sealed Subwoofer Enclosure
• 10" TW3 Thin Line Subwoofer
• Sealed Fiberglass Construction with Weatherproof Texture-Coated Finish

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No Fit Icon Doesn't fit your RX-4

List price $1149.99
-15% $977.49

Available

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JL Audio Stealthbox® SB-GM-C7CP2/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2014-2019 Corvette

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JL Audio Stealthbox® SB-GM-C7CP2/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2014-2019 Corvette

• Contains two 10TW3-D8 subwoofers in a sealed enclosure
• Installation does not affect storage of targa-tops
• Mounts ahead of the rear axle, so as to preserve precious cargo space and maintain the C7’s excellent weight distribution
• Installs behind front seats in the forward section of the cargo area
• Sealed fiberglass enclosure

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No Fit Icon Doesn't fit your RX-4

List price $1999.99
-15% $1,699.99

Available

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Atrend A101-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 1988-1999 vehicles from Chevrolet, GMC

A101-10CP big Out of stock
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Atrend A101-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 1988-1999 vehicles from Chevrolet, GMC

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.0 cubic feet
• Compatible with select 1988-1999 vehicles from Chevrolet, GMC

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13
List price $119.99
-17% $99.99
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• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.0 cubic feet
• Compatible with select 1988-1999 vehicles from Chevrolet, GMC

NVX Loaded BOOST Box - 2010-2015 Toyota Prius - BE-TOY-PRIG3

For select 2010-2015 Prius - Single 10" 350W RMS Loaded BOOST Sealed Enclosure

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NVX Loaded BOOST Box - 2010-2015 Toyota Prius - BE-TOY-PRIG3

For select 2010-2015 Prius - Single 10" 350W RMS Loaded BOOST Sealed Enclosure

• Custom-Fit Sealed BOOST enclosure with 1 10" S Series Subwoofer
• Fits select 2010-2015 Prius
• 350 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm

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5
List price $437.99
-20% $349.99
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• Custom-Fit Sealed BOOST enclosure with 1 10" S Series Subwoofer
• Fits select 2010-2015 Prius
• 350 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm

NVX PBK-BE-FRD-BRO-G6 - 2021-2025 Ford Bronco - Complete Bass Package

For select 2021-2025 Bronco - 12" 400W RMS Complete Amplified Subwoofer Bass Package Solution

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NVX PBK-BE-FRD-BRO-G6 - 2021-2025 Ford Bronco - Complete Bass Package

For select 2021-2025 Bronco - 12" 400W RMS Complete Amplified Subwoofer Bass Package Solution

• Fits 2021-up Ford Bronco
• High-density plywood with bedliner covering enclosure
• Loaded with one 12" SMW12D4 Subwoofer
• Installs quickly and easily mounts to interior tailgate panel

No Fit Icon Doesn't fit your RX-4

88
List price $921.96
-34% $609.99
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• Fits 2021-up Ford Bronco
• High-density plywood with bedliner covering enclosure
• Loaded with one 12" SMW12D4 Subwoofer
• Installs quickly and easily mounts to interior tailgate panel

Atrend A201-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 2002-2019 Ram 3500 / 1500 / 2500 and 1500 and 1500 Classic

A201-10CP big Out of stock
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Atrend A201-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 2002-2019 Ram 3500 / 1500 / 2500 and 1500 and 1500 Classic

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.85 cubic feet
• Compatible with select 2002-2019 Ram 3500 / 1500 / 2500 and 1500 and 1500 Classic

No Fit Icon Doesn't fit your RX-4

11
List price $114.99
-13% $99.99
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• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.85 cubic feet
• Compatible with select 2002-2019 Ram 3500 / 1500 / 2500 and 1500 and 1500 Classic

NVX Loaded BOOST Box - 2012-2020 Tesla Model S - BE-TSLAS-VCW104

For select 2012-2020 Model S - Single 10" 1000W RMS Loaded BOOST Sealed Enclosure

BE-TSLAS-VCW104 big Out of stock
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NVX Loaded BOOST Box - 2012-2020 Tesla Model S - BE-TSLAS-VCW104

For select 2012-2020 Model S - Single 10" 1000W RMS Loaded BOOST Sealed Enclosure

• Sealed BOOST enclosure with 1 10" VC Series Subwoofer
• Fits select 2012-2020 Model S
• 1000 watts RMS (2000 watts Peak)
• Final Impedance: 2-ohm

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3
List price $563.99
-17% $469.99
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Like New from: $424.99

• Sealed BOOST enclosure with 1 10" VC Series Subwoofer
• Fits select 2012-2020 Model S
• 1000 watts RMS (2000 watts Peak)
• Final Impedance: 2-ohm

NVX Loaded BOOST Box - 2021-2025 Ford Bronco - BE-FRD-BRO-G6

For select 2021-2025 Bronco - Single 12" 400W RMS Loaded BOOST Sealed Enclosure

BE-FRD-BRO-G6 big Out of stock
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NVX Loaded BOOST Box - 2021-2025 Ford Bronco - BE-FRD-BRO-G6

For select 2021-2025 Bronco - Single 12" 400W RMS Loaded BOOST Sealed Enclosure

• Sealed enclosure with 1 12" S Series Subwoofer
• Fits select 2021-2025 Bronco
• 400 watts RMS (800 watts Peak)
• Final Impedance: 2-ohm
• Installs quickly and easily mounts to interior tailgate panel

No Fit Icon Doesn't fit your RX-4

List price $455.99
-34% $299.99
Add to Cart

• Sealed enclosure with 1 12" S Series Subwoofer
• Fits select 2021-2025 Bronco
• 400 watts RMS (800 watts Peak)
• Final Impedance: 2-ohm
• Installs quickly and easily mounts to interior tailgate panel

Atrend A142-10CP

Empty Dual 10" Sealed Enclosure for

A142-10CP big Out of stock
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Atrend A142-10CP

Empty Dual 10" Sealed Enclosure for

• 10" Dual Sealed Subwoofer Enclosure
• Compatible with
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.82 cubic feet

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6
$199.99
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• 10" Dual Sealed Subwoofer Enclosure
• Compatible with
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.82 cubic feet

Atrend A152-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 1999-2007 vehicles from GMC, Chevrolet

A152-10CP big Out of stock
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Atrend A152-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 1999-2007 vehicles from GMC, Chevrolet

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.86 cubic feet
• Compatible with select 1999-2007 vehicles from GMC, Chevrolet

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8
$159.99
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• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.86 cubic feet
• Compatible with select 1999-2007 vehicles from GMC, Chevrolet

Atrend A361-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 2009-2025 F-150 and F-150 Lightning

A361-10CP big Out of stock
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Atrend A361-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 2009-2025 F-150 and F-150 Lightning

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.8 cubic feet
• Compatible with select 2009-2025 F-150 and F-150 Lightning

No Fit Icon Doesn't fit your RX-4

5
List price $109.95
-14% $94.95
Add to Cart

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.8 cubic feet
• Compatible with select 2009-2025 F-150 and F-150 Lightning

Atrend A392-10CP

Empty Dual 10" Sealed Rear Enclosure for select 1999-2007 F-350 Super Duty and F-250 Super Duty and F-450 Super Duty

A392-10CP big Out of stock
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Atrend A392-10CP

Empty Dual 10" Sealed Rear Enclosure for select 1999-2007 F-350 Super Duty and F-250 Super Duty and F-450 Super Duty

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.92 cubic feet
• Compatible with select 1999-2007 F-350 Super Duty and F-250 Super Duty and F-450 Super Duty

No Fit Icon Doesn't fit your RX-4

1
$179.99
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• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.92 cubic feet
• Compatible with select 1999-2007 F-350 Super Duty and F-250 Super Duty and F-450 Super Duty

NVX Loaded BOOST Box - 2012-2018 Ford Focus - BE-FDFOCHBG3-VS102

For select 2012-2018 Focus - Single 10" 500W RMS Loaded BOOST Sealed Enclosure

BE-FDFOCHBG3-VS102 big Out of stock
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NVX Loaded BOOST Box - 2012-2018 Ford Focus - BE-FDFOCHBG3-VS102

For select 2012-2018 Focus - Single 10" 500W RMS Loaded BOOST Sealed Enclosure

• Custom-Fit Sealed BOOST enclosure with 1 10" N-Series Subwoofer
• Fits select 2012-2018 Focus (5-door hatchback vehicles)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

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No Fit Icon Doesn't fit your RX-4

3
List price $449.99
-22% $349.99
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• Custom-Fit Sealed BOOST enclosure with 1 10" N-Series Subwoofer
• Fits select 2012-2018 Focus (5-door hatchback vehicles)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

Atrend A202-12CP

Empty Dual 12" Sealed Rear Underseat Enclosure for select 2002-2019 Ram 2500 / 1500 / 3500 and 1500 and 1500 Classic

A202-12CP big Out of stock
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Atrend A202-12CP

Empty Dual 12" Sealed Rear Underseat Enclosure for select 2002-2019 Ram 2500 / 1500 / 3500 and 1500 and 1500 Classic

• 12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.26 cubic feet
• Compatible with select 2002-2019 Ram 2500 / 1500 / 3500 and 1500 and 1500 Classic

No Fit Icon Doesn't fit your RX-4

6
List price $204.99
$199.99
Add to Cart

• 12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.26 cubic feet
• Compatible with select 2002-2019 Ram 2500 / 1500 / 3500 and 1500 and 1500 Classic

NVX PBK-TSLAS-VCW104 - 2012-2022 Tesla Model S - Complete Bass Package

For select 2012-2020 Model S - 10" 1000W RMS Complete Amplified Subwoofer Bass Package Solution

PBK-TSLAS-VCW104 big Out of stock
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NVX PBK-TSLAS-VCW104 - 2012-2022 Tesla Model S - Complete Bass Package

For select 2012-2020 Model S - 10" 1000W RMS Complete Amplified Subwoofer Bass Package Solution

• Custom Bass Package for 2012-2022 Tesla Model S
• 5-Seat Model Only

• Powerful NVX VSW104v2-4 subwoofer
• Hand-Laid Fiberglass Enclosure
• Fits In the Driver Side of the Trunk
• Add 1000 Watts RMS of Bass to Your Tesla

No Fit Icon Doesn't fit your RX-4

178
List price $1065.96
-21% $839.99
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• Custom Bass Package for 2012-2022 Tesla Model S
• 5-Seat Model Only

• Powerful NVX VSW104v2-4 subwoofer
• Hand-Laid Fiberglass Enclosure
• Fits In the Driver Side of the Trunk
• Add 1000 Watts RMS of Bass to Your Tesla

NVX Empty BOOST Box - 2019-2024 Chevy Silverado/GMC Sierra - UBE-GM-19SLVCC-P212

For select 2019-2024 Sierra and Silverado 2500 HD / 1500 / 3500 HD / 1500 LD Crew Cab Trucks - Dual 12" Empty BOOST Vented Truck Enclosure with LED Lighting

UBE-GM-19SLVCC-P212 big Out of stock
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NVX Empty BOOST Box - 2019-2024 Chevy Silverado/GMC Sierra - UBE-GM-19SLVCC-P212

For select 2019-2024 Sierra and Silverado 2500 HD / 1500 / 3500 HD / 1500 LD Crew Cab Trucks - Dual 12" Empty BOOST Vented Truck Enclosure with LED Lighting

• Custom Fit Empty Dual 12" BOOST Vented Truck Enclosure
• Compatible with select 2019-2024 Sierra and Silverado 2500 HD / 1500 / 3500 HD / 1500 LD
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 2.75 cubic feet (common chamber)

No Fit Icon Doesn't fit your RX-4

List price $1249.99
-20% $999.99
Add to Cart

• Custom Fit Empty Dual 12" BOOST Vented Truck Enclosure
• Compatible with select 2019-2024 Sierra and Silverado 2500 HD / 1500 / 3500 HD / 1500 LD
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 2.75 cubic feet (common chamber)

NVX Empty BOOST Box - 2009-2026 Ford F-Series Crew Cab - UBE-FD-09F150SC-S212

For select 2009-2026 vehicles from Ford - Dual 12" Empty BOOST Sealed Truck Enclosure with LED Lighting

UBE-FD-09F150SC-S212 big Out of stock
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NVX Empty BOOST Box - 2009-2026 Ford F-Series Crew Cab - UBE-FD-09F150SC-S212

For select 2009-2026 vehicles from Ford - Dual 12" Empty BOOST Sealed Truck Enclosure with LED Lighting

• Custom Fit Empty Dual 12" BOOST Sealed Truck Enclosure
• Compatible with select 2009-2026 vehicles from Ford
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.5 cubic feet (common chamber)

No Fit Icon Doesn't fit your RX-4

List price $1199.99
-17% $999.99
Add to Cart

• Custom Fit Empty Dual 12" BOOST Sealed Truck Enclosure
• Compatible with select 2009-2026 vehicles from Ford
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.5 cubic feet (common chamber)

Atrend A219-8CPQS

Empty Quad 8" Sealed Rear Truck Enclosure for select 2019-2025 vehicles from Ram

A219-8CPQS big Out of stock
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Atrend A219-8CPQS

Empty Quad 8" Sealed Rear Truck Enclosure for select 2019-2025 vehicles from Ram

• 8" Quad Sealed Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 2 cubic feet
• Compatible with select 2019-2025 vehicles from Ram

No Fit Icon Doesn't fit your RX-4

1
List price $205.40
-27% $149.99
Add to Cart

• 8" Quad Sealed Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 2 cubic feet
• Compatible with select 2019-2025 vehicles from Ram

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    FAQ Frequently asked questions in All Custom-fit Subwoofer Boxes

    Custom-fit Subwoofer Boxes Frequently Asked Questions (FAQ)
    Custom-fit subwoofer boxes are specially designed enclosures that are tailored to fit specific vehicle makes and models. These boxes are crafted to utilize the available space in your vehicle most efficiently, ensuring a seamless integration that doesn't sacrifice valuable trunk or cargo space. They provide several advantages, including optimal bass response, enhanced audio quality, and a polished, factory-like appearance. By choosing a custom-fit subwoofer box, you can enjoy a clean and professional-looking installation that complements your vehicle's interior while delivering impressive bass performance. These boxes eliminate the need for complex fabrication work and customization, making them an excellent choice for those seeking hassle-free, high-quality bass solutions.
    Determining the availability of a custom-fit subwoofer box for your vehicle is straightforward. Most reputable manufacturers and retailers provide online tools or compatibility guides. You typically input your vehicle's make, model, and sometimes the year, and the tool will display compatible options. Alternatively, you can reach out to the manufacturer or retailer directly for assistance. They can verify compatibility and guide you in selecting the appropriate custom-fit subwoofer box for your vehicle.
    Custom-fit subwoofer boxes are designed with ease of installation in mind, making them suitable for DIY enthusiasts. They come with clear instructions and mounting hardware, simplifying the installation process. In most cases, you can secure them to the vehicle using basic hand tools. However, the level of installation difficulty can vary depending on your vehicle's make and model, your technical expertise, and the complexity of your audio system. Some installations may require minor modifications or the removal of existing components. If you're not comfortable with these tasks, or if your vehicle has unique challenges, it's advisable to seek professional installation. Professionals can ensure a secure and seamless integration while avoiding potential issues.
    While custom-fit subwoofer boxes are designed to accommodate various subwoofer sizes and styles, it's essential to choose a subwoofer that matches the box's specifications and your audio preferences. Consider factors such as the subwoofer's size, power handling, and impedance. Ensure that the chosen subwoofer complements the custom-fit box for optimal performance. Before making a selection, consult the box's specifications and guidelines provided by the manufacturer or retailer. This information will help you choose a compatible subwoofer that maximizes the box's potential, resulting in excellent bass output and audio quality.
    Custom-fit subwoofer boxes offer several advantages over generic, universal boxes: Precise Fit: Custom-fit boxes are precisely designed to match your vehicle's dimensions, ensuring a seamless and unobtrusive installation without the need for extensive modifications or wasted space. Enhanced Audio Quality: These boxes are engineered for optimal bass response, providing better sound quality and bass performance compared to generic enclosures. Aesthetically Pleasing: Custom-fit boxes blend seamlessly with your vehicle's interior, creating a clean, factory-like appearance. Space Efficiency: They maximize available space, allowing you to retain trunk or cargo capacity. Simplified Installation: Custom-fit boxes come with specific mounting hardware and instructions, making installation more accessible, even for DIY enthusiasts. Ultimately, custom-fit subwoofer boxes offer a superior solution for those seeking the best possible bass performance and aesthetics in their vehicle audio systems.
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