Subwoofer Enclosures Loaded Custom Fit

Passive OEM Loaded Subwoofer Enclosure Collection

Passive OEM Style Custom-Fit Loaded Subwoofer-Enclosures

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 Audio SB-GM-SLVCC4/12TW3 : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, cutaway view. JL Audio SB-GM-SLVCC4/12TW3 : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVCC4/12TW3 : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, 2019-UP Silverado, Sierra (Crew Cab)

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    Dual 12-Inch 2-Ohm 800-Watt Thin Subwoofer-Enclosure for Select 2019-UP (Gen 4) Chevrolet-Silverado and GMC-Sierra 1500 Crew-Cab Trucks, 2020-UP for 2500 and 3500 HD This generation of Chevrolet/GMC trucks is bringing new levels of interior refinement and technology to the full-size truck segment. JL's Stealthbox® enhances all this by adding impressive, high-quality bass without losing any of your precious people space or interior functionality. The Stealthbox® slips under the truck's rear seat and features two of JL Audio's revolutionary 12TW3 thin-line subwoofers, giving you absolutely stellar sub-bass impact and quality. We even left a perfect spot in the middle of the enclosure for a clean, hidden amplifier installation! The Hard Data: Contains two 12TW3-D8 subwoofers in a down-firing sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs under rear seat. Will not affect the folding of the rear seat or rear leg room. Applications CHEVROLET Silverado 1500 2019-2024 Silverado 2500 HD, 3500 HD 2020-2024 GMC Sierra 1500 2019-2024 Sierra 2500 HD, 3500 HD 2020-2024 Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVCC4/12TW3 Installation Manual

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    $2,199.99

  • JL Audio SB-GM-SLVCC2/12TW3/BK : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, cutaway view. JL Audio SB-GM-SLVCC2/12TW3/BK : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVCC2/12TW3/BK : Dual 12" 800W 2Ω Thin Subwoofer Enclosure, 2007-2013 Silverado, Sierra (Crew Cab)

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    Dual 12-Inch 2-Ohm 800-Watt Thin Subwoofer-Enclosure for Select 2007-2013 Chevrolet-Silverado and GMC-Sierra Crew-Cab Trucks with Ebony-Interior Whether your truck is used to work hard or play even harder, this vehicle brings a whole lot to the table: from great towing and hauling capabilities to powerful engine options, a spacious interior and a smooth ride. Amidst an evolving truck market complicated with special features and touch screens, the massive GM Crew Cab trucks have stuck to their model of simplicity and comfort. JL Audio's Stealthbox® enhances this design by adding quality bass without losing precious space or functionality. The Stealthbox® slips under the truck's rear seat and features two of JL's revolutionary 12TW3 thin-line subwoofers, giving you absolutely stellar sub-bass impact and quality. They even left a perfect spot for a clean amplifier installation! The Hard Data: Contains two 12TW3-D8 subwoofers in a down-firing sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs under rear seat. Will not affect the folding of the rear seat or rear leg room.Will not fit “Classic” models. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVCC2/12TW3/BK Installation Manual

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    $1,999.99

  • JL Audio SB-GM-SLVCC3/10TW3/BK2 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, 2014-2018 Silverado Sierra Crew Cab JL Audio SB-GM-SLVCC3/10TW3/BK2 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVCC3/10TW3/BK2 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, 2014-2018 Silverado, Sierra (Crew Cab)

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    Dual 10-Inch 2-Ohm 800-Watt Thin Subwoofer-Enclosure for Select 2014-2018 (Gen 3) Chevrolet-Silverado and GMC-Sierra Crew-Cab Trucks This generation of Chevrolet/GMC trucks is bringing new levels of interior refinement and technology to the full-size truck segment. JL's Stealthbox® enhances all this by adding impressive, high-quality bass without losing any of your precious people space or interior functionality. The Stealthbox® slips under the truck's rear seat and features two of JL Audio's revolutionary 10TW3 thin-line subwoofers, giving you absolutely stellar sub-bass impact and quality. They even left a perfect spot in the middle of the enclosure for a clean, hidden amplifier installation! The Hard Data: Contains two 10TW3-D8 subwoofers in a down-firing sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs under rear seat. Will not affect the folding of the rear seat or rear leg room. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVCC3/10TW3/BK2 Installation Manual

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    $1,899.99

  • JL Audio SB-GM-SLVD4/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, cutaway view. JL Audio SB-GM-SLVD4/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVD4/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, 2019-UP Silverado, Sierra (Double Cab)

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    Dual 10-Inch 2-Ohm 800-Watt Thin Subwoofer-Enclosure for Select 2019-UP Chevrolet-Silverado and GMC-Sierra Double-Cab Trucks The fourth generation of GM’s full-size truck boasts major enhancements in technology and power, all packed in a larger body with a refined interior. Sadly, the factory audio options are still deficient in the bass delivery department. JL Audio's Stealthbox® for the Double Cab version features an all-fiberglass, sealed enclosure design that mounts under the rear seat and requires no holes to be drilled for installation. Outfitted with a pair of JL's revolutionary 10TW3 thin-line subwoofers, this Stealthbox® fills your truck with stunning amounts of JL Audio bass, with no intrusion on cab space. They even left a recess on the Stealthbox's top for amplifier installation, if desired. The Hard Data: Contains two 10TW3-D8 subwoofers in a down-firing sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs under rear bench seat. Will not affect the folding of the rear seat or rear leg room. Requires removal of under-seat storage tray, if so equipped. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVD4/10TW3 Installation Manual

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    $1,699.99

  • JL Audio SB-GM-SLVD/10TW1/BK : Dual 10" 600W RMS 2Ω Thin Subwoofer Enclosure, 2014-2018 Silverado Sierra (Extended Cab) JL Audio SB-GM-SLVD/10TW1/BK : Dual 10" 600W RMS 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVD/10TW1/BK : Dual 10" 600W RMS 2Ω Thin Subwoofer Enclosure, 2014-2018 Silverado Sierra (Extended Cab)

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    Dual 10-Inch 2-Ohm 600-Watt Thin Subwoofer-Enclosure for Select 2014-2018 Chevrolet-Silverado and GMC-Sierra Extended-Cab Trucks with Jet-Black or Dark-Ash Interior Whether your GM truck is used to work hard or play even harder, it brings a whole lot to the table, including great towing and hauling capabilities, a spacious interior and a smooth ride. JL's Stealthbox® enhances your GM truck by adding quality JL Audio bass without losing much of your precious space or interior functionality. Inside this Stealthbox®, two of JL Audio's revolutionary 10TW1 thin-line subwoofer drivers deliver absolutely stellar sub-bass impact and quality. The Hard Data: Contains two 10TW1-4 subwoofers in a sealed enclosure. 600 watt power handling. Wired for a 2 ohm load. Installs under rear seat. Will not affect the folding of the rear seat or rear leg room. Installation requires removal of plastic storage tray under rear seat (if equipped). Will not fit Crew Cab or Standard Cab trucks. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVD/10TW1/BK Installation Manual

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    $1,699.99

  • JL Audio SB-GM-SLVCRW/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, 1999-2006 Silverado Sierra Crew Cab JL Audio SB-GM-SLVCRW/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-SLVCRW/10TW3 : Dual 10" 800W 2Ω Thin Subwoofer Enclosure, 1999-2006 Silverado, Sierra (Crew Cab)

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    Dual 10-Inch 2-Ohm 800-Watt Thin Subwoofer-Enclosure for Select 1999-2006 Chevrolet-Silverado, GMC-Sierra Crew-Cab Trucks and 2007 Crew-Cab-Classic Trucks The massive GM Crew Cab trucks offer limousine-like rear seat room and comfort, accomplished by effectively utilizing almost every cubic inch of interior space. JL Audio's Stealthbox® for these big trucks slips behind the rear seat and features twin 10TW3 subwoofers for absolutely stellar sub-bass impact and quality. Nobody will ever know it's there, until you turn it up. The Hard Data: Contains two 10TW3-D8 subwoofers in a sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs behind the rear seat. Will not affect the folding of the rear seat or rear leg room. Applications  CHEVROLET Silverado 1500, 2500, 3500 1999-2006 Silverado Classic 2007 GMC Sierra 1500, 2500, 3500 1999-2006 Sierra 1500 Classic 2007 Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-SLVCRW/10TW3 Installation Manual

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    $1,599.99

  • JL Audio SB-GM-COCREW2G/10TW3 : 10" 400W 2Ω Thin Subwoofer Enclosure, 2015-UP Colorado Canyon JL Audio SB-GM-COCREW2G/10TW3 : 10" 400W 2Ω Thin Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-COCREW2G/10TW3 : 10" 400W 2Ω Thin Subwoofer Enclosure, 2015-2022 Colorado, Canyon (Crew Cab)

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    10-Inch 2-Ohm 400-Watt Thin Subwoofer-Enclosure for Select 2015-2022 Chevrolet-Colorado and GMC-Canyon Crew-Cab Vehicles GM’s mid-size truck returns with major enhancements in power and technology, all packaged in a larger body and upscale interior with all the trimmings. Unfortunately, the factory audio systems are still lacking in the bass delivery department. JL's Stealthbox® features an all-fiberglass, sealed enclosure design that installs under the rear seat and requires no holes to be drilled for installation. Equipped with their revolutionary 10TW3 thin-line subwoofer, this Stealthbox® fills your truck with powerful, deep JL Audio bass, with no intrusion on cab space. The Hard Data: Contains one 10TW3-D4 subwoofer in a sealed enclosure. 400 watt power handling. Wired for 2 ohm mono. Installs under the rear bench seat. Does not affect folding or reclining of seat. Requires removal of under seat storage tray. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-COCREW2G/10TW3 Installation Manual

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    $1,499.99

  • JL Audio SB-GM-TAHOCNSL/10W1v3 : 10" 300W 2Ω Subwoofer Enclosure, cutaway view. JL Audio SB-GM-TAHOCNSL/10W1v3 : 10" 300W 2Ω Subwoofer Enclosure, shown installed.

    JL Audio SB-GM-TAHOCNSL/10W1v3 : 10" 300W 2Ω Subwoofer Enclosure, 2007-2013 Chevy, GMC (Bucket Seats and Factory Console)

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    10-Inch 2-Ohm 300-Watt Subwoofer-Enclosure for Select 2007-2013 Chevrolet and GMC Full-Size SUV’s or Trucks with Front-Bucket-Seats This generation of GM's big trucks and SUV's sets new standards for interior quality and luxury. There also isn't much wasted space in which to install a conventional subwoofer design without giving up cargo and people space. JL's Stealthbox® solution installs inside the forward section of the factory center console for complete invisibility. Intense, up-front bass is produced by a down-firing 10-inch subwoofer in a sealed enclosure. The console's functionality and storage space is unaffected by the Stealthbox®. The Hard Data: Contains one 10W1v3-2 in a sealed enclosure. 300 watt power handling. Wired for 2 ohm mono. Stealthbox® installs inside forward-most portion of front center console and replaces the OEM “subwoofer” system, if vehicle is so equipped. Will not fit Trucks with AC vents on the back of the center console or vehicles with deep storage area in front of cup holders. Will not fit Full-Size “Classic” Trucks, Chevrolet SSR, Cadillac Escalade, Cadillac Escalade ESV, Cadillac Escalade EXT, Hummer H2, Hummer H2 SUT. Applications  CHEVROLET Avalanche 2007-2013 Silverado 1500, 2500 HD, 3500 HD 2007-2013 Suburban 2007-2013 Tahoe 2007-2013 Yukon 2007-2013 Yukon XL 2007-2013 GMC Sierra 1500, 2500 HD, 3500 HD 2007-2013 Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-GM-TAHOCNSL/10W1v3 Installation Manual

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    $999.99

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