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

All Atrend Custom-fit Subwoofer Boxes for your 1978 SP370 close

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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.
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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!
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.
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Atrend A152-10

Empty Dual 10" Sealed Subwoofer Enclosure for select 1997-2007 vehicles from GMC, Chevrolet

A152-10 big
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Atrend A152-10

Empty Dual 10" Sealed Subwoofer Enclosure for select 1997-2007 vehicles from GMC, Chevrolet

• 10" Dual Sealed Subwoofer Enclosure
• Built for select 1997-2007 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Custom down-firing fit under rear driver side seat
• Premium, ultra-tough coat spray-liner finish
• Constructed using specially formulated aliphatic wood glue
• Total box volume: 2.44 cubic feet

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No Fit Icon Doesn't fit your SP370

2
List price $319.99
-29% $225.99

In stock

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Atrend A341-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 2009-2020 vehicles from Ford

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Atrend A341-10CP

Empty Single 10" Sealed Rear Underseat Enclosure for select 2009-2020 vehicles from Ford

• 10" Single Sealed Subwoofer Enclosure
• 5/8" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.8 cubic feet
• Compatible with select 2009-2020 vehicles from Ford

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No Fit Icon Doesn't fit your SP370

2
List price $119.99
-17% $99.95

Available

Ships in 10-14 days

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Atrend A181-12CPV

Empty Single 12" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 2500 HD / 1500 / 1500 HD / 3500 HD / 1500 LD and Sierra 2500 HD / 3500 HD / 1500 / 1500 Denali / 1500 HD and Sierra Denali

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Atrend A181-12CPV

Empty Single 12" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 2500 HD / 1500 / 1500 HD / 3500 HD / 1500 LD and Sierra 2500 HD / 3500 HD / 1500 / 1500 Denali / 1500 HD and Sierra Denali

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.83 cubic feet
• Compatible with select 2007-2021 Silverado 2500 HD / 1500 / 1500 HD / 3500 HD / 1500 LD and Sierra 2500 HD / 3500 HD / 1500 / 1500 Denali / 1500 HD and Sierra Denali

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No Fit Icon Doesn't fit your SP370

1
List price $164.99
-21% $129.95

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Only 1 Left!

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Atrend A201-10V

Empty Single 10" Vented Underseat Enclosure for select 2002-2018 1500 and Ram 1500

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Atrend A201-10V

Empty Single 10" Vented Underseat Enclosure for select 2002-2018 1500 and Ram 1500

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.3 cubic feet
• Compatible with select 2002-2018 1500 and Ram 1500

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No Fit Icon Doesn't fit your SP370

List price $319.99
-25% $238.99

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Only 3 Left!

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Atrend A704-12

Empty Dual 12" Sealed Rear Enclosure for select 2007-2018 Wrangler and Wrangler (JK)

A704-12 big
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Atrend A704-12

Empty Dual 12" Sealed Rear Enclosure for select 2007-2018 Wrangler and Wrangler (JK)

• 12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.6 cubic feet
• Compatible with select 2007-2018 Wrangler and Wrangler (JK)

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No Fit Icon Doesn't fit your SP370

List price $399.99
-10% $361.40

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Atrend A202-1019

Empty Dual 10" Sealed Rear Underseat Truck Enclosure for select 2002-2018 Ram 2500 / 3500 / 1500 and 1500

A202-1019 big
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Atrend A202-1019

Empty Dual 10" Sealed Rear Underseat Truck Enclosure for select 2002-2018 Ram 2500 / 3500 / 1500 and 1500

• 10" Dual Sealed Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 2 cubic feet
• Compatible with select 2002-2018 Ram 2500 / 3500 / 1500 and 1500

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$364.99

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Only 2 Left!

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• 10" Dual Sealed Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 2 cubic feet
• Compatible with select 2002-2018 Ram 2500 / 3500 / 1500 and 1500

Atrend A202-12CPV

Empty Dual 12” Vented Rear Underseat Enclosure for select 2002-2018 Ram 3500 / 2500 / 1500 and 1500

A202-12CPV big
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Atrend A202-12CPV

Empty Dual 12” Vented Rear Underseat Enclosure for select 2002-2018 Ram 3500 / 2500 / 1500 and 1500

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 1.9 cubic feet
• Compatible with select 2002-2018 Ram 3500 / 2500 / 1500 and 1500

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No Fit Icon Doesn't fit your SP370

List price $409.99
-13% $356.20

Available

Ships in 10-14 days

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Atrend A151-12CP

Empty Single 12" Sealed Rear Underseat Enclosure for select 1999-2007 vehicles from GMC, Chevrolet

A151-12CP big
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Atrend A151-12CP

Empty Single 12" Sealed Rear Underseat Enclosure for select 1999-2007 vehicles from GMC, Chevrolet

• 12" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.93 cubic feet
• Compatible with select 1999-2007 vehicles from GMC, Chevrolet

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No Fit Icon Doesn't fit your SP370

8
List price $104.95
-9% $94.99

In stock

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Atrend A181-10CPV

Empty Single 10" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 3500 HD / 1500 / 2500 HD / 1500 HD / 1500 LD and Sierra 1500 / 2500 HD / 1500 HD / 3500 HD / 1500 Denali and Sierra Denali

A181-10CPV big
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Atrend A181-10CPV

Empty Single 10" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 3500 HD / 1500 / 2500 HD / 1500 HD / 1500 LD and Sierra 1500 / 2500 HD / 1500 HD / 3500 HD / 1500 Denali and Sierra Denali

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.83 cubic feet
• Compatible with select 2007-2021 Silverado 3500 HD / 1500 / 2500 HD / 1500 HD / 1500 LD and Sierra 1500 / 2500 HD / 1500 HD / 3500 HD / 1500 Denali and Sierra Denali

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No Fit Icon Doesn't fit your SP370

2
List price $164.99
-32% $112.99

In stock

Only 2 Left!

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Atrend A362-10CP

Empty Dual 10" Sealed Rear Enclosure for select 2009-2019 F-150

A362-10CP big
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Atrend A362-10CP

Empty Dual 10" Sealed Rear Enclosure for select 2009-2019 F-150

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.6 cubic feet
• Compatible with select 2009-2019 F-150

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No Fit Icon Doesn't fit your SP370

5
$159.99

Available

Ships in 10-14 days

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Atrend A151-10CP

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

A151-10CP big
Go to item page Right Arrow Icon of Right Arrow

Atrend A151-10CP

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

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.93 cubic feet
• Compatible with select 1999-2007 vehicles from GMC, Chevrolet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your SP370

3
$99.99

In stock

Add to Cart

Atrend A346-10V

Empty Dual 10" Vented Rear Underseat Truck Enclosure for select 2009-2019 F-150 and F-250 Super Duty and F-350 Super Duty

A346-10V big
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Atrend A346-10V

Empty Dual 10" Vented Rear Underseat Truck Enclosure for select 2009-2019 F-150 and F-250 Super Duty and F-350 Super Duty

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.0 cubic feet
• Compatible with select 2009-2019 F-150 and F-250 Super Duty and F-350 Super Duty

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No Fit Icon Doesn't fit your SP370

List price $369.99
-16% $309.40

In stock

Only 1 Left!

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Atrend A219-8CPQS

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

A219-8CPQS big
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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

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No Fit Icon Doesn't fit your SP370

1
List price $205.40
-27% $149.99

In stock

Add to Cart

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
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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

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No Fit Icon Doesn't fit your SP370

1
$179.99

In stock

Only 2 Left!

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Atrend A372-10CP

Empty Dual 10" Sealed Rear Enclosure for select 2004-2008 F-150 and F-150 Heritage

A372-10CP big
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Atrend A372-10CP

Empty Dual 10" Sealed Rear Enclosure for select 2004-2008 F-150 and F-150 Heritage

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.4 cubic feet
• Compatible with select 2004-2008 F-150 and F-150 Heritage

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No Fit Icon Doesn't fit your SP370

7
$154.95

Available

Ships in 10-14 days

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Limited time!

Atrend A352-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 2001-2003 F-150

A352-10CP big
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Atrend A352-10CP

Empty Dual 10" Sealed Rear Underseat Enclosure for select 2001-2003 F-150

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.1 cubic feet
• Compatible with select 2001-2003 F-150

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No Fit Icon Doesn't fit your SP370

3
$175.99

In stock

Add to Cart

Atrend A219-8CPDV

Empty Dual 8" Vented Rear Truck Enclosure for select 2019-2023 3500 and 2500 and 1500

A219-8CPDV big
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Atrend A219-8CPDV

Empty Dual 8" Vented Rear Truck Enclosure for select 2019-2023 3500 and 2500 and 1500

• 8" Dual Ported Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium charcoal carpet finish
• Total box volume: 1.2 cubic feet
• Compatible with select 2019-2023 3500 and 2500 and 1500

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$205.40

Available

Ships in 10-14 days

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Atrend A142-10

Empty Dual 10" Sealed Subwoofer Enclosure for select 2007-2014 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD

A142-10 big
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Atrend A142-10

Empty Dual 10" Sealed Subwoofer Enclosure for select 2007-2014 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD

• 10" Dual Sealed Subwoofer Enclosure
• Built for select 2007-2014 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD
• 3/4" Medium Density Fiberboard (MDF) construction
• Designed for rear underseat down-firing installation
• Premium, ultra-tough coat spray-liner finish
• Constructed using specially formulated aliphatic wood glue
• Total box volume: 1.82 cubic feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your SP370

1
List price $369.99
-36% $235.99

Available

Ships in 10-14 days

Add to Cart

Atrend A202-10V

Empty Dual 10" Vented Shallow Truck Enclosure for select 2002-2018 Ram 3500 / 1500 / 2500 and 1500

A202-10V big
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Atrend A202-10V

Empty Dual 10" Vented Shallow Truck Enclosure for select 2002-2018 Ram 3500 / 1500 / 2500 and 1500

• 10" Dual Ported Truck Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.9 cubic feet
• Compatible with select 2002-2018 Ram 3500 / 1500 / 2500 and 1500

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No Fit Icon Doesn't fit your SP370

List price $599.99
-14% $517.40

In stock

Only 2 Left!

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Atrend A602-10CP

Empty Dual 10" Sealed Under Rear Enclosure for select 2007-2018 Tundra

A602-10CP big
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Atrend A602-10CP

Empty Dual 10" Sealed Under Rear Enclosure for select 2007-2018 Tundra

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2 cubic feet
• Compatible with select 2007-2018 Tundra

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No Fit Icon Doesn't fit your SP370

1
$189.99

Available

Ships in 10-14 days

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