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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.

5 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-T-TUNDCMAX/13TW5v2 : 13" 600W 4Ω Thin Subwoofer Enclosure, 2007-2013 Toyota Tundra CrewMax JL Audio SB-T-TUNDCMAX/13TW5v2 : 13" 600W 4Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-T-TUNDCMAX/13TW5v2 : 13" 600W 4Ω Thin Subwoofer Enclosure, 2007-2013 Toyota Tundra (CrewMax)

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    Single 13-Inch 600-Watt Thin Subwoofer-Enclosure for Select 2007-2013 Toyota Tundra-CrewMax Pickups Toyota's largest truck offers amazing people space, but doesn't leave much for a traditional subwoofer enclosure. It's a good thing JL Didn't let conventional thinking get in the way of creating Stealthbox® solutions. Using the remarkable 13TW5v2 thin-line subwoofer, JL Audio have created a powerful Stealthbox® that can be installed behind the back seat of the big Tundra. One is enough for creating outstanding sub-bass with deep extension and solid impact, but for those looking for maximum performance, installing a pair of them will deliver up to 6dB more output. The Hard Data: Contains one 13TW5v2-4 subwoofer in a sealed enclosure. 600 watt power handling. Wired for 4 ohm mono. Installs behind the rear bench. One notch of seat travel is lost with installation and full-recline of the seat-back is only available when the seat is in its more forward positions. If the vehicle is equipped with the factory JBL® subwoofer, you must do one of the following to install the Stealthbox®: A) Permanently modify (cut) the factory trim panel.  B) Obtain a replacement “no-subwoofer” trim panel from Toyota Parts prior to installation. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-T-TUNDCMAX/13TW5v2 Installation Manual

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    $1,299.99

  • JL Audio SB-J-JL4DPAS/10TW1-2 : 10" 300W 2Ω Thin Subwoofer Enclosure, 2018-UP Jeep Wrangler JL Unlimited Passenger Side JL Audio SB-J-JL4DPAS/10TW1-2 : 10" 300W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-J-JL4DPAS/10TW1 : 10" 300W 2Ω or 4Ω Thin Subwoofer Enclosure, 2018-UP Jeep Wrangler JL Unlimited (Passenger Side)

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    10-Inch 300-Watt Thin Subwoofer-Enclosure for Select 2018-UP Jeep Wrangler-Unlimited, Passenger-Side Combining JL's advanced thin-line subwoofer technology with a form fitting enclosure design, these Stealthbox® systems deliver outstanding sub-bass performance in your 4-door Wrangler, without consuming excess cargo space. Constructed from 100% fiberglass, each Stealthbox® houses a 10TW1 thin-line subwoofer and mounts solidly above each rear wheel well. A matching trim panel and sturdy steel-mesh grille are included, so you can carry plenty of gear without worrying about damage. Separate driver and passenger side Stealthbox® models are available, each with 2 or 4 ohm drivers. The Hard Data: Contains one 10TW1 in a sealed enclosure with 300 watt power handling. Choose from 2 ohm or 4 ohm models, driver or passenger side. Each enclosure installs above one rear wheel well. Black steel mesh grille is included with each. If vehicle is factory-equipped with Premium Audio, passenger side Stealthbox® installation requires removal of OEM “subwoofer” and purchase of interior trim parts from Jeep®. Will not fit any "JK" Jeep® model or 2-Door "JL" models. Soft-top models: Stealthbox® installation does not interfere with normal top operation, except for the final position where the top mechanism is detached from the rails. Jeep Part #CFWLR-74-24 carpet needs to be ordered from jeep to remove the Factor Subwoofer. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-J-JL4DPAS/10TW1-2 Installation Manual

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    $999.99

  • JL Audio SB-J-JL4DDRV/10TW1-2 : 10" 300W 2Ω Thin Subwoofer Enclosure, 2018-UP Jeep Wrangler JL Unlimited JL Audio SB-J-JL4DDRV/10TW1-2 : 10" 300W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-J-JL4DDRV/10TW1-2 : 10" 300W 2Ω or 4Ω Thin Subwoofer Enclosure, 2018-UP Jeep Wrangler JL Unlimited (Driver Side)

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    10-Inch 300-Watt Subwoofer Enclosure for Select 2018-UP Jeep Wrangler-Unlimited, Driver Side Combining JL's advanced thin-line subwoofer technology with a form fitting enclosure design, these Stealthbox® systems deliver outstanding sub-bass performance in your 4-door Wrangler, without consuming excess cargo space. Constructed from 100% fiberglass, each Stealthbox® houses a 10TW1 thin-line subwoofer and mounts solidly above each rear wheel well. A matching trim panel and sturdy steel-mesh grille are included, so you can carry plenty of gear without worrying about damage. Separate driver and passenger side Stealthbox® models are available, each with 2 or 4 ohm drivers. The Hard Data: Contains one 10TW1 in a sealed enclosure with 300 watt power handling. Choose from 2 ohm or 4 ohm models, driver or passenger side. Each enclosure installs above one rear wheel well. Black steel mesh grille is included with each. If vehicle is factory-equipped with Premium Audio, passenger side Stealthbox® installation requires removal of OEM “subwoofer” and purchase of interior trim parts from Jeep®. Will not fit any "JK" Jeep® model or 2-Door "JL" models. Soft-top models: Stealthbox® installation does not interfere with normal top operation, except for the final position where the top mechanism is detached from the rails. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-J-JL4DDRV/10TW1-2 Installation Manual

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    $999.99

  • JL Audio SB-SMRT-4-2/8W3v3 : 8" 250W 4Ω Subwoofer Enclosure, 2008-2015 Smart fortwo JL Audio SB-SMRT-4-2/8W3v3 : 8" 250W 4Ω Subwoofer Enclosure, shown installed.

    JL Audio SB-SMRT-4-2/8W3v3 : 8" 250W 4Ω Subwoofer Enclosure, 2008-2015 Smart fortwo

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    Single 8-Inch 250-Watt Subwoofer-Enclosure for Select 2008-2015 Smart-fortwo Vehicles There are a lot of design areas where the Smart fortwo is brilliant... but the weak factory audio system isn't one of them. Facing the obvious limitations of space and functionality presented by this diminutive automobile, the JL Audio Stealthbox® design team had to reach deep into their bag of tricks. Their solution is a robust JL Audio 8-inch subwoofer tucked neatly beneath the dashboard in a 100% fiberglass sealed enclosure, resulting in zero loss of useful space. So, fill the CD changer or plug in your MP3 player and enjoy impressive JL Audio sound quality on every drive. The Hard Data: Contains one 8W3v3-4 subwoofer in a sealed enclosure. 250 watt power handling. Wired for 4 ohm mono. Installs underneath passenger-side dash. Stealthbox® includes a black, steel-mesh grille to protect the driver.Storage of any type of magnetic-drive media player in the glove box is not recommended with Stealthbox® installed. Requires removal or relocation of factory SiriusXM® tuner, if equipped. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-SMRT-4-2/8W3v3 Installation Manual

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    $799.99

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