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Automotive Passive OEM Loaded Subwoofer Enclosures

Automotive Passive OEM Loaded Subwoofer Enclosure Collection

Loaded subwoofer enclosures come in Passive or Active styles. Passive enclosures, or boxes, require an additional amplifier to produce sound while Active enclosures have amplifiers built into them and are self contained all-in-one systems.

Subwoofer drivers, also know as subs, are specific only to the lowest frequencies of the sound spectrum, and are the largest drivers in any car stereo. They are generally found in sizes of 8″ – 12″ diameters. Subs move massive amounts of air creating large pressure waves. These large pressure waves give that bottom end punch you expect from your kick drum, the undeniable funk of a bass guitar and the earthshaking bump of a house beat. 

The frequency range of a subwoofer generally covers the first 2 octaves of the sound spectrum, also known as the lows. Subwoofers require their own mounting structure called a sub box. Sub boxes are built to create negative pressure on the sub to help move their large diameter cones back and forth for accurate reproduction of low end frequencies. Custom subwoofer boxes are built to meet certain cubic air space specifications of sub drivers and are sometimes custom built to fit under seats or other hidden areas to maximize the use of space in the vehicle. JL Audio’s Stealthbox's are custom designed to fit many vehicles while minimizing the footprint needed to be installed in your car.

RMS vs. MAX power: The RMS rating of any speaker driver is the continuous power rating that the speaker is designed to withstand at a maximum continued volume rating. The RMS rating is the only number to go by when pairing your speakers with an amplifier. As an example a speaker with a 100Watt, or 100W for short, RMS rating and a 300-Watt Max rating is ultimately a 100 Watt speaker. The Max rating is the temporary spikes in voltage that the speaker can handle. A 100-Watt RMS / 300-Watt Max speaker is going to outperform a 100W RMS / 250W Max speaker at higher volumes, but may not be the more detailed reference speaker.

Ohms: The Ohm rating, or resistance rating, of a speaker is an essential part of a well balanced car stereo system. Many JBL factory speaker systems have 2ohm drivers. Most aftermarket speakers are 4ohm drivers. Replacing these types of factory speakers may require a wiring bypass of the factory amplifier.

Driver resistance ratings are essential when pairing subwoofer and speaker drivers with amplifiers. An amplifier that is 750W @ 2ohms might only generally be 500W or less @ 4ohms. When purchasing a subwoofer driver the correct pairing of a subwoofer’s RMS wattage and Ohm ratings with an amplifier’s output power rating is absolutely essential.

Frequency Response: Frequencies are measured in Hertz or Hz for short. The frequency response of speaker drivers will generally fall between 20Hz and 22kHz. At 20Hz the sound spectrum begins. Every time you double your frequency you move up one octave in scale. 20-Hertz to 40-Hertz covers the first Octave, 40Hz to 80Hz covers the next octave and so on. Subwoofer drivers are generally tuned to crossover at 80 Hertz. This can depend on the subwoofer type and the type of music you listen to.

8 products

  • JL SB-D-MGACAB/10W6v3 : Dual 10" 1200W Sub Box for Ram Mega Cab 2006-2016 JL SB-D-MGACAB/10W6v3 : Dual 10" 1200W Sub Box for Ram Mega Cab 2006-2016, installed.

    JL Audio SB-D-MGACAB/10W6v3 : Dual 10" 1200W Subwoofer Enclosure @ 4Ω, 2006-2016 Ram (Mega Cab)

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    Dual 10-Inch 4-Ohm 1200-Watt Subwoofer-Enclosure for Select 2006-2016 Dodge-Ram Mega-Cab Vehicles Filling the biggest truck interior on the market with high-quality bass is not a simple task. Useable space is limited and you also have to leave space for a powerful amplifier. The Stealthbox® team's solution for the Mega Cab is a compact, sealed enclosure design with two of our premium 10W6v3 subwoofer drivers. This setup delivers world-class sub-bass fidelity, outstanding power handling and impressive output capability. And, yes... the rear seats still recline and you have plenty of space next to the Stealthbox® for your amplifier(s). The Hard Data: Contains two 10W6v3-D4's in a sealed enclosure. 1200 watt power handling. Wired for 4 ohm mono. Installs behind driver's side rear seat. The seat folding function remains unaffected. Removal of rear storage bin is necessary for installation. Permanent modification of the folding floor extensions is required if these are to be used. If modification is not desired, floor extensions may also be removed for installation. Will not fit 2014-2016 models with power sliding rear window. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-MGACAB/10W6v3 Installation Manual

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    $1,999.99

  • JL Audio SB-D-5GRAMQC/10TW3 : Dual 10" 800W Subwoofer Enclosure @ 2Ω, 2020-UP Ram 1500 Quad Cab JL Audio SB-D-5GRAMQC/10TW3 : Dual 10" 800W Subwoofer Enclosure @ 2Ω, cutaway view.

    JL Audio SB-D-5GRAMQC/10TW3 : Dual 10" 800W Subwoofer Enclosure @ 2Ω, 2020-UP Ram 1500 Quad Cab

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    Dual 10-Inch 2-Ohm 800-Watt Subwoofer-Enclosure for Select 2020-UP RAM1500 QuadCab Vehicles This generation of RAM’s big hauler combines a bold new design with major advancements in aerodynamics, technology and towing capabilities. Disappointingly, the original equipment audio systems lack the low-frequency output and performance you might expect. Luckily, JL-Audio engineers are experts in maximizing bass from minimal space and developed a subwoofer solution that fills your Quad Cab with loads of powerful bass output. Featuring a 100% fiberglass, sealed enclosure design, this Stealthbox houses two of JL-Audio's innovative 10TW3 thin-line subwoofers and installs neatly under the rear seat, without compromising rear seat comfort or folding. Theyeven left space on the enclosure that’s perfect for a small, hidden amplifier installation! The Hard Data: Contains two 10TW3-D8 Subwoofers in a sealed enclosure. 800 watt power handling. Wired for 2 ohm mono. Installation requires removal of rear underseat storage tray, if equipped. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-5GRAMQC/10TW3 Manual

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    $1,949.99

  • JL Audio SB-D-5GRAMCCF/12TW3 : Dual 12" 800W Sub Box for Ram 1500 Crew Cab, 2019-UP JL Audio SB-D-5GRAMCCF/12TW3 : Dual 12" 800W Sub Box for Ram 1500 Crew Cab, 2019-UP, shown installed.

    JL Audio SB-D-5GRAMCCF/12TW3 : Dual 12" 800W Subwoofer Enclosure @ 2Ω, 2019-UP Ram 1500 (Crew Cab)

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    Dual 12-Inch 2-Ohm 800-Watt Subwoofer-Enclosure for Select 2019-UP RAM-1500 Crew-Cab Models with Fixed Rear-Seat This generation of RAM’s big hauler combines a bold new design with major advancements in aerodynamics, technology and towing capabilities. Unfortunately, the factory sound systems are greatly deficient in the bass reproduction department. Fortunately, JL's engineers tackled this challenge head on and developed a subwoofer solution that fills your Crew Cab with stunning amounts of deep bass output. Featuring a 100% fiberglass, sealed enclosure design, this Stealthbox® houses two of JL Audio's revolutionary 12TW3 thin-line subwoofers and installs neatly under the rear seat, without compromising rear seat comfort. Rear seat folding is unaffected, and we even left space on the enclosure that’s perfect for a clean, hidden amplifier installation! Specifications The Hard Data: Contains two 12TW3-D8 Subwoofers in a sealed enclosure. 800 watt power handling. Wired for 2 ohm mono. Fits 1500 Crew Cab with fixed (non- reclining) rear seat. Will not fit 2500 or 3500 models. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-5GRAMCCF/12TW3 Installation Manual

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    $1,799.99

  • JL SB-D-5GRAMCCR/10TW3 : Dual 10" 800W Sub Box for Ram 1500 Crew Cab 2019-UP JL SB-D-5GRAMCCR/10TW3 : Dual 10" 800W Sub Box for Ram 1500 Crew Cab 2019-UP, installed under rear seat.

    JL Audio SB-D-5GRAMCCR/10TW3 : Dual 10" 800W Subwoofer Enclosure @ 2Ω, 2019-UP Ram 1500 (Crew Cab)

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    Dual 10-Inch 2-Ohm 800-Watt Subwoofer-Enclosure for Select 2019-UP RAM-1500 Crew-Cab Trucks, with Reclining Rear-Seat This generation of RAM’s big hauler combines a bold new design with major advancements in aerodynamics, technology and towing capabilities. Sadly, the spacious interior leaves little room for a high-performance subwoofer enclosure. Fortunately, JL's engineers welcomed this challenge head on and developed a subwoofer solution that fills your Crew Cab with loads of deep bass output. Featuring an all-fiberglass, sealed enclosure design, this Stealthbox® houses two of JL Audio's revolutionary 10TW3 thin-line subwoofers and installs neatly under the rear seat, without compromising rear seat comfort. Rear seat folding and recline are unaffected, and we even left
 a spot on the enclosure that’s perfect for a clean, hidden amplifier installation! Specifications Contains two 10TW3-D8 Subwoofers in a sealed enclosure. 800 watt power handling. Wired for 2 ohm mono. Installation requires removal of under-seat storage divider panel, if equipped. Fits 1500 Crew Cab with reclining rear seat. Will not fit 2500 or 3500 models. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-5GRAMCCR/10TW3 Installation Manual

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    $1,599.99

  • JL Audio SB-D-MGACABG4/10TW1 : Dual 10" 600W Subwoofer Enclosure @ 2Ω, 2006-UP Ram 2500/3500 Crew & Mega Cab, cutaway view. JL Audio SB-D-MGACABG4/10TW1 : Dual 10" 600W Subwoofer Enclosure @ 2Ω, 2006-UP Ram 2500/3500 Crew & Mega Cab, shown installed with cutaway view.

    JL Audio SB-D-MGACABG4/10TW1 : Dual 10" 600W Subwoofer Enclosure @ 2Ω, 2006-UP Ram 2500/3500 Crew & Mega Cab

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    Dual 10-Inch 2-Ohm 600-Watt Subwoofer-Enclosure for Select 2006-UP RAM 2500/3500 Crew-Cab and Mega-Cab Vehicles Ram's Mega Cab delivers a cavernous cabin with one of the largest interiors available in a pickup. Too bad the factory audio systems are ill-equipped and struggle in the bass reproduction department. To overcome this challenge, JL Audio engineers developed a subwoofer solution that installs neatly, behind the back seat of this monstrous people mover, without compromising rear seat comfort. Featuring 100% fiberglass construction, this Stealthbox is outfitted with two of JL Audio's innovative, 10-inch TW1 thin-line subwoofers in a custom-formed, sealed enclosure. The result is outstanding sub-bass performance with deep extension and solid impact. For those looking for even more performance, two enclosures can be installed side by side for up to 6dB more of jaw-dropping output. The Hard Data: Contains two 10TW1-4 in a sealed enclosure. 600 watt power handling. Wired for 2 ohm mono. Installation requires removal of rear seat storage compartment and OEM subwoofer, if equipped. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-MGACABG4/10TW1 Manual

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    $1,399.99

  • JL Audio SB-D-QDRAMD/10TW1 : 10" Thin 600W Subwoofer Enclosure @ 2Ω, Ram 1500 Crew Cab 2009-2018 JL Audio SB-D-QDRAMD/10TW1 : 10" Thin 600W Subwoofer Enclosure, shown installed.

    JL Audio SB-D-QDRAMD/10TW1 : 10" Thin 600W Subwoofer Enclosure @ 2Ω, 2002-2022 Ram (Quad Cab)

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    Dual 10-Inch 600-Watt 2-Ohm Carpeted Fiberglass Subwoofer-Enclosure for Select 2002-2022 Ram Quad-Cab Pickups Dodge’s big hauler combines large sedan passenger comfort with tough pickup truck capabilities, but does not have a lot of extra interior space for a bulky subwoofer enclosure. JL's Stealthbox® for the Quad Cab® neatly negotiates these challenges and tucks under the rear seat, enclosing dual 10-inch thin line subwoofer drivers for impressive sub-bass performance. Seat folding and comfort are unaffected, and plenty of room is left in the center for amplifier installation or storage. Best of all, this Stealthbox® is essentially invisible once installed, but certainly noticeable when you fire up your favorite music and experience world-class sub-bass. The Hard Data:Contains two 10TW1-4 subwoofer drivers in a sealed enclosure. 600 watt power handling. Wired for 2 ohm mono. Some models may require cutting and removal of the underseat carpet and/or carpet padding. Will not fit Standard Cab, '02-'08 Crew Cab, or Mega Cab. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-QDRAMD/10TW1 Installation Manual

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    $1,399.99

  • JL Audio SB-D-TRKCTR2/12W3v3 : 12" 500W Subwoofer Enclosure @ 2Ω, Ram 1500 with split front bench 1998-2001 JL Audio SB-D-TRKCTR2/12W3v3 : 12" 500W Subwoofer Enclosure, shown wrapped.

    JL Audio SB-D-TRKCTR2/12W3v3 : 12" 500W Subwoofer Enclosure @ 2Ω, 1998-2002 Ram (with split front bench)

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    Single 12-Inch 500-Watt 2-Ohm Carpeted Fiberglass Subwoofer-Enclosure for Select 1998-2002 Dodge-Ram Pickups, with 40/20/40 split front bench-seat This Stealthbox® model is as stealthy as they come with a clever design that replaces the lower center cushion of the Ram's front seat with a sealed subwoofer enclosure. Your factory upholstery covers the box for a perfect factory look. The forward location and down-firing design of this Stealthbox® deliver amazing “up-front” bass presence and stunning impact. The Hard Data: Contains one 12W3v3-2 in a sealed enclosure. 500 watt power handling. Wired for 2 ohm mono. Stealthbox® replaces the bottom part of the factory front center seat. In Ram QuadCab models, rear center cup holders need to be removed. Stealthbox® must be covered using cover from the bottom part of the factory front center seat. Stealthbox® is not padded and therefore not as comfortable to sit on as the factory seat cushion. Installation requires repositioning of seat belt sensor. Will not fit '94-'97 or '03-Up Dodge Ram. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-TRKCTR2/12W3v3 Installation Manual

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    $999.99

  • JL SB-D-QDRAM/10W3v3 : Single 10" 500W Sub Box for Ram 1500 Crew Cab 2009-2018 JL SB-D-QDRAM/10W3v3 : Single 10" 500W Sub Box for Ram 1500 Crew Cab 2009-2018, installed.

    JL Audio SB-D-QDRAM/10W3v3 : 10" 500W Subwoofer Enclosure @ 2Ω, 2002-2022 Ram (Quad Cab)

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    Single 10-Inch 500-Watt 2-Ohm Carpeted Fiberglass Subwoofer-Enclosure for Select 2002-2022 RAM and Quad-Cab Trucks Dodge's big hauler combines large sedan passenger comfort with tough pickup truck capabilities. JL's Stealthbox® for the Quad Cab tucks under the rear seat on the passenger side and encloses a 10-inch driver for impressive sub-bass performance. Seat folding is unaffected and plenty of room is left on the driver side for amplifier installation or storage. Best of all, the Stealthbox® is essentially invisible once installed. The Hard Data: Contains one 10W3v3-2 in a sealed enclosure. 500 watt power handling. Wired for 2 ohm mono. Installs under passenger side rear-bench seat. The seat folding function remains unaffected. Cup holders are not affected. Some models require removal of the passenger side metal floor extension located under the rear seat. Some models may require cutting and removal of the underseat carpet and/or carpet padding. Will not fit Mega Cab. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-D-QDRAM/10W3v3 Installation Manual

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    $899.99

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