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

Custom-fit Subwoofer Boxes for your 2021 Spark

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Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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 Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

RMS Power Handling
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 powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
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.
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Alpine PSS-TSUB-T3A

500W Peak (200W RMS) Loaded Single 10" Sealed Enclosure with Monoblock Amplifier for select 2017-2025 Model 3 with Factory-Equipped Premium Audio

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Alpine PSS-TSUB-T3A

500W Peak (200W RMS) Loaded Single 10" Sealed Enclosure with Monoblock Amplifier for select 2017-2025 Model 3 with Factory-Equipped Premium Audio

• Single 10" Loaded Subwoofer Enclosure and Amplifier
• For select 2017-2025 Model 3 with factory-equipped premium audio system
• 500 watts Peak, 200 watts RMS
• Includes Class D Stable Monoblock Amplifier
• Direct fit stealth installation in passenger side rear trunk

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JL Audio Stealthbox® SB-D-5GRAMCCR/10TW3

Custom fit subwoofer enclosure for select 2019-2024 1500

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JL Audio Stealthbox® SB-D-5GRAMCCR/10TW3

Custom fit subwoofer enclosure for select 2019-2024 1500

• 2019-Up Ram 1500 Crew Cab with Reclining Rear Seat
• 800 Watts of Power
• Slim Design

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JL Audio Stealthbox® SB-D-CHLGR/12W3v3

Custom fit subwoofer enclosure for select 2009-2023 Challenger

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JL Audio Stealthbox® SB-D-CHLGR/12W3v3

Custom fit subwoofer enclosure for select 2009-2023 Challenger

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 12W3v3-2
• 500 Watts RMS Power Handling
• Stealthbox Installs against driver-side wheel well

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NVX BOOST Box - 2009-2018 Ford F-150 Super Cab - LVE-FRD-150CECG12-D12S

For select 2009-2018 F-150 Extended Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2009-2018 Ford F-150 Super Cab - LVE-FRD-150CECG12-D12S

For select 2009-2018 F-150 Extended Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2009-2018 F-150
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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NVX Loaded BOOST Box - 2002-2018 Ram Quad, Crew Cab - LVE-DOD-RAMQCCG3-D12S

For select 2002-2018 1500 and Ram 1500 Quad and Crew Cab - Dual 12" 800W RMS Loaded BOOST Sealed Truck Enclosure

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NVX Loaded BOOST Box - 2002-2018 Ram Quad, Crew Cab - LVE-DOD-RAMQCCG3-D12S

For select 2002-2018 1500 and Ram 1500 Quad and Crew Cab - Dual 12" 800W RMS Loaded BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 10" S Series Subwoofers
• Compatible with select 2002-2018 1500 and Ram 1500
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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Alpine S2-DB8V-TRK

600W Peak (300W RMS) Loaded Dual 8" Vented Enclosure for select 2007-2024 vehicles from Jeep, GMC, Ford

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Alpine S2-DB8V-TRK

600W Peak (300W RMS) Loaded Dual 8" Vented Enclosure for select 2007-2024 vehicles from Jeep, GMC, Ford

• Ported enclosure with 2 8" S Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 40-51" L x 8.75" H x 13.75" W

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NVX Loaded BOOST Box - 2020-2023 Tesla Model Y - BE-TSLAY-G1P (Passenger's Side)

For select 2020-2023 Model Y - Single 10" 500W RMS Loaded BOOST Sealed Enclosure

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NVX Loaded BOOST Box - 2020-2023 Tesla Model Y - BE-TSLAY-G1P (Passenger's Side)

For select 2020-2023 Model Y - Single 10" 500W RMS Loaded BOOST Sealed Enclosure

• Sealed BOOST enclosure with 1 10" N Series Subwoofer (Passenger Side)
• Fits select 2020-2023 Model Y (5-seat models only)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

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DS18 JT-S64

Empty Quad 6.5" Sealed Underseat Enclosure for select 2020-2026 Gladiator

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DS18 JT-S64

Empty Quad 6.5" Sealed Underseat Enclosure for select 2020-2026 Gladiator

• 6.5" Quad Sealed Under Seat Subwoofer Enclosure for select 2020-2026 Gladiator
• Medium Density Fiberboard (MDF) construction
• Total box volume: 1.3 cubic feet
• Mounting bracket and hardware included
• Built-in RGB LED lights in DS18 logos badge

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MTX Audio Thunderform F250X00BK20-TN

400W RMS Loaded Single 10" Sealed Truck Enclosure for select 2000-2014 F-250 Super Duty

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MTX Audio Thunderform F250X00BK20-TN

400W RMS Loaded Single 10" Sealed Truck Enclosure for select 2000-2014 F-250 Super Duty

• Sealed enclosure with 2 10" MTX ThunderForm Series Subwoofer
• 200 watts RMS
• Final Impedance: 4-ohm
• Dimensions: 55-1/8" L x 7" H x 10-3/4" W

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JL Audio Stealthbox® SB-F-SUPRCNSL/10W3v3

Custom-Fit Loaded 10" Sealed Truck Enclosure with One 10W3v3-2 Subwoofer for select 1999-2007 F-250 Super Duty and F-350 Super Duty and Excursion with Front Bucket Seats

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JL Audio Stealthbox® SB-F-SUPRCNSL/10W3v3

Custom-Fit Loaded 10" Sealed Truck Enclosure with One 10W3v3-2 Subwoofer for select 1999-2007 F-250 Super Duty and F-350 Super Duty and Excursion with Front Bucket Seats

• Sealed truck enclosure with 1 10" W3 v3 Series Subwoofer
• Designed for select 1999-2007 F-250 Super Duty and F-350 Super Duty and Excursion
• 500 watts RMS Power Rating
• Final Impedance: 2-ohm
• Includes one JL Audio 10W3v3-2 subwoofer
• Installs inside the factory center console

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JL Audio Stealthbox® SBX-F-MAVG1/10TW1

Custom Fit 12" Subwoofer Enclosure for select 2022-2025 Maverick

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JL Audio Stealthbox® SBX-F-MAVG1/10TW1

Custom Fit 12" Subwoofer Enclosure for select 2022-2025 Maverick

• Sealed enclosure with 1 10" Stealth Series Subwoofer
• 300 watts RMS
• Final Impedance: 2-ohm
• Dimensions: 5-1/4" L x 16" H x 26-5/8" W

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JL Audio Stealthbox® SB-F-SUPRCC/13TW5v2/BK

Custom fit subwoofer enclosure for select 2008-2016 vehicles from Ford with FlexFold 60/40 split bench rear seat (Black leather)

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JL Audio Stealthbox® SB-F-SUPRCC/13TW5v2/BK

Custom fit subwoofer enclosure for select 2008-2016 vehicles from Ford with FlexFold 60/40 split bench rear seat (Black leather)

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 13TW5v2-2
• 600 Watts RMS
• For 2004-Up SuperDuty Crew Cab with FlexFold 60/40 split bench rear seat and Black (leather) interior
• Stealthbox Installs under the rear bench seat

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MTX Audio Thunderform JWTJ97C20-TN (Charcoal, Loaded)

Dual 10" Loaded Thunderform Subwoofer Enclosure for select 1997-2006 Wrangler Unlimited

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MTX Audio Thunderform JWTJ97C20-TN (Charcoal, Loaded)

Dual 10" Loaded Thunderform Subwoofer Enclosure for select 1997-2006 Wrangler Unlimited

• Dual 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• 1997-2006 Jeep Wrangler TJ
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm

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JL Audio Stealthbox® SB-J-WRUP/10TW1/BK_PASS

Custom fit subwoofer enclosure for select 2007-2018 Wrangler Unlimited (JK) for Passenger Side (Black)

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JL Audio Stealthbox® SB-J-WRUP/10TW1/BK_PASS

Custom fit subwoofer enclosure for select 2007-2018 Wrangler Unlimited (JK) for Passenger Side (Black)

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 10TW1-4
• 300 Watts RMS Power Handling
• Stealthbox Installs above one rear wheel well

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NVX BOOST Box - 2009-2018 Ford F-150 Super Crew Cab - LVE-FRD-150CCG12-D12S

For select 2009-2018 F-150 Super Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

LVE-FRD-150CCG12-D12S big
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NVX BOOST Box - 2009-2018 Ford F-150 Super Crew Cab - LVE-FRD-150CCG12-D12S

For select 2009-2018 F-150 Super Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2009-2018 F-150
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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DS18 EXCL-TUNDRABASS1.LDPKG

2400W Peak (1200W RMS) Loaded Dual 10" Sealed Enclosure and Amplifier Package for select 2022-2025 Tundra

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DS18 EXCL-TUNDRABASS1.LDPKG

2400W Peak (1200W RMS) Loaded Dual 10" Sealed Enclosure and Amplifier Package for select 2022-2025 Tundra

• 10" Amplified Loaded Subwoofer System
• 1200 watts RMS
• Includes two DS18 IXS10.4D subwoofers
• Includes DS18 ZR1500.1D amplifier
• Variable bass boost
• 3/4" MDF construction with black vinyl-carpet trim
• Down firing under rear seat enclosure design

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DS18 JT-S84LD

3600W Peak (1800W RMS) Loaded Quad 8" Sealed Enclosure with Digital LED Lights for select 2020-2026 Gladiator

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DS18 JT-S84LD

3600W Peak (1800W RMS) Loaded Quad 8" Sealed Enclosure with Digital LED Lights for select 2020-2026 Gladiator

• Sealed enclosure with 4 8" Subwoofer
• 1800 watts RMS (3600 watts Peak)
• Final Impedance: 1-ohm
• Dimensions: 44.3" L x 7.2" H (front) / 5.8" H (rear) x 11.2" W

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D12S

For select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD Double Cab - Dual 12" 800W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D12S

For select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD Double Cab - Dual 12" 800W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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NVX Loaded BOOST Box - 2014-2021 Toyota Tundra - LVE-TOY-TUNCCG2-D12S

For select 2014-2021 Tundra - Dual 12" 800W RMS Loaded BOOST Sealed Truck Enclosure

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NVX Loaded BOOST Box - 2014-2021 Toyota Tundra - LVE-TOY-TUNCCG2-D12S

For select 2014-2021 Tundra - Dual 12" 800W RMS Loaded BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2014-2021 Tundra
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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JL Audio Stealthbox® SB-D-QDRAMD/10TW1 (Like New (Open Box))

Custom fit subwoofer enclosure for select 2002-2024 vehicles from Ram, Dodge

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JL Audio Stealthbox® SB-D-QDRAMD/10TW1 (Like New (Open Box))

Custom fit subwoofer enclosure for select 2002-2024 vehicles from Ram, Dodge

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Two JL Audio 10TW1-4 Subwoofers
• RMS: 600 watts per pair / 300 watts each
• For 2002-Up Dodge Ram
• Stealthbox Installs underneath rear seat

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• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Two JL Audio 10TW1-4 Subwoofers
• RMS: 600 watts per pair / 300 watts each
• For 2002-Up Dodge Ram
• Stealthbox Installs underneath rear seat

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    Custom-fit Subwoofer Boxes
    Finding custom fit car subwoofers and boxes doesn't have to be a tedious task. We get it, you don't just want to buy a set of speakers or a box that "might fit" your vehicle, you want want that actually gets the job done. Our wide selection of vehicle-specific subwoofer & boxes will have you rockin n rolling in no time.
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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