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Passive OEM Empty Subwoofer Enclosures

Passive OEM Empty 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

  • A-Trend A372-10CP : Dual 10" Sealed Sub Box for Ford F-150 Super Cab 2004-2008

    A-Trend A372-10CP : Dual 10" Sealed Sub Box, 2004-2008 Ford F-150 (Super Cab)

    Pre-Order Today!

    Dual 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2004-2008 Ford F-150 SuperCrew and Super-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Accu-Tuned 10” Dual sealed subwoofer enclosure designed for optimum bass response and low-frequency reproduction which is ideal for lower profile sound quality subwoofers. OEM-Fit is designed and engineered specifically for the 2004-2008 Super Crew / Super Cab trucks to ensure an OEM fit without impeding the operation of the back seat. High-Grade MDF for Ultimate structural rigidity and no-flex construction. .825 Cubic Feet Net Volume internal air space (per sub) is ideal for tight accurate bass reproduction. Subwoofer Mounting Depth is 5.25” which is ideal for lower profile subwoofers. Specially Formulated Aliphatic Wood Glue to ensure an airtight seal between all MDF parts with a second application of glue around all internal joints after final assembly. Pneumatic Applied Brad Nails to pull tight and hold the MDF parts during the glue drying process and help assure a no-leak, no-rattle air chamber. Premium Carpet Finish Dimensions Sub cut out: 9.125”, mounting depth: 5.25” Specifications Configuration: Dual Sealed Finish: Charcoal Carpeted Width:49.25" Height:6.75" Depth:11.75" Max Mounting Depth:5.25" Gross VolumePer Sub:2.36 Net Volume Per Sub:1.65

    Pre-Order Today!

    $239.99

  • A-Trend A352-10CP : Dual 10" Sealed Sub Box for F-150 Super Crew 1997-2003 A-Trend A352-10CP : Dual 10" Sealed Sub Box for F-150 Super Crew 1997-2003, specs.

    A-Trend A352-10CP : Dual 10" Sealed Sub Box, 1997-2003 F-150 (SuperCrew)

    Pre-Order Today!

    Dual 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 1997 -2003 Ford F-150 SuperCrew-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Accu-Tuned 10” Dual sealed subwoofer enclosure designed for optimum bass response and low-frequency reproduction which is ideal for lower profile sound quality subwoofers. OEM-Fit is designed and engineered specifically for the 1997-2003 Super Crew trucks to ensure an OEM fit without impeding the operation of the back seat. High-Grade MDF for Ultimate structural rigidity and no-flex construction. .91 Cubic Feet Net Volume internal air space (per sub) is ideal for tight accurate bass reproduction. Subwoofer Mounting Depth is 5.75” which is ideal for lower profile subwoofers. Specially Formulated Aliphatic Wood Glue to ensure an airtight seal between all MDF parts with a second application of glue around all internal joints after final assembly. Pneumatic Applied Brad Nails to pull tight and hold the MDF parts during the glue drying process and help assure a no-leak, no-rattle air chamber. Premium OEM Grade Carpeting for factory look and durability. Dimensions Sub Cut Out: 9.125”, Mounting Depth: 5.75”, Width: 43.75” Height: 10.25”, Depth: 13.5” Specifications Configuration: Dual Sealed Finish: Charcoal Carpeted Width:43.75" Height:5.63" Depth:13.50" Max Mounting Depth:5.75" Gross VolumePer Sub:2.55 Net Volume Per Sub:1.83

    Pre-Order Today!

    $239.99

  • A-Trend A362-10CP : Dual 10" Sealed Sub Box for F-150 Super Crew 2009-2018

    A-Trend A362-10CP : Dual 10" Sealed Sub Box, 2009-2018 F-150 (SuperCrew)

    Pre-Order Today!

    Dual 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2009-2018 Ford F-150 SuperCrew-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Designed specifically for 2009-2018 Ford F150 Crew Cab Trucks May fit some 2019 legacy models Premium Carpeted Finish 3/4" Mounting Baffle Hardwood MDF construction Rounded edges Glued and Braced construction Subwoofer mounting depth: 6" Box volume: 0.8 cubic feet (per chamber) Specifications Configuration: Dual Sealed Finish: Charcoal Carpeted Width:50.63" Height:5.75" Depth:13.63" Max Mounting Depth:5.00" Gross VolumePer Sub:2.90 Net Volume Per Sub:2.07 Installation Note: Installs under the rear seat with Subwoofers facing down.

    Pre-Order Today!

    $239.99

  • Last One! A-Trend A321-10CP : Single 10" Sealed Sub Box, 2004-2008 Ford F-150 Super Crew and Super Cab

    A-Trend A321-10CP : Single 10" Sealed Sub Box, 2004-2008 Ford F-150 (SuperCrew and Super Cab)

    1 Available for pickup

    Single 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2004-2008 Ford F-150 SuperCrew and Super-Cab Pickups

    1 Available for pickup

    $164.99

  • Last One! A-Trend A361-10CP : Single 10" Sealed Sub Box for F-150 Super Crew 2009-2018 A-Trend A361-10CP : Single 10" Sealed Sub Box for F-150 Super Crew 2009-2018, shown installed.

    A-Trend A361-10CP : Single 10" Sealed Sub Box, 2009-2018 F-150 (SuperCrew)

    1 Available for pickup

    Single 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2009-2018 Ford F-150 SuperCrew-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Designed specifically for 2009-2018 Ford F150 Crew Cab Trucks May fit some 2019 legacy models Premium Carpeted Finish 3/4" Mounting Baffle Hardwood MDF construction Rounded edges Glued and Braced construction Subwoofer mounting depth: 6" Box volume: 0.8 cubic feet Specifications Configuration: Single Sealed Finish: Charcoal Carpeted Width:26.00" Height:5.75" Depth:13..625" Max Mounting Depth:5.00" Gross VolumePer Sub:1.49 Net Volume Per Sub:1.01 Installation Note: Installs under the rear seat with Subwoofers facing down.

    1 Available for pickup

    $154.99

  • A-Trend A341-10CP : Single 10" Sealed Sub Box for F-Series Super Crew and Super Cab 2009-2018

    A-Trend A341-10CP : Single 10" Sealed Sub Box, 2009-2018 F-Series (SuperCrew and Super Cab)

    Pre-Order Today!

    Single 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2009-2018 Ford F-150 & 2017-2018 F-250, F-350 and F-450 SuperCrew and Super-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Designed specifically for 2009-2018 Ford F150 Super Crew/Super Cab Will also work in 2017 - 2018 F250/350/450 Super Crew / Super Cab Premium Carpeted Finish 3/4" Hardwood MDF Glued and Braced construction CNC Grooved custom finish Rounded edges Silver spring loaded terminal cups Subwoofer mounting depth: 4.5" Box volume: 0.8 cubic feet (per chamber) Sub Cut Out: 9.125”, Width:26”, Height: 9”, Depth: 13.25” Specifications Configuration: Single Sealed Finish: Charcoal Carpeted Width:26.00" Height:4.63" Depth:13.25" Max Mounting Depth:4.50" Gross VolumePer Sub:1.37 Net Volume Per Sub:0.92

    Pre-Order Today!

    $154.99

  • Last One! A-Trend A371-10CP : Single 10" Sealed Sub Box for F-150 Super Crew and Super Cab 2004-2008

    A-Trend A371-10CP : Single 10" Sealed Sub Box, 2004-2008 F-150 (SuperCrew and Super Cab)

    1 Available for pickup

    Single 10-Inch Sealed Carpeted Subwoofer-Enclosure for Select 2004-2008 Ford F-150 SuperCrew and Super-Cab Pickups CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Accu-Tuned 10” Single sealed subwoofer enclosure designed for optimum bass response and low-frequency reproduction which is ideal for lower profile sound quality subwoofers. OEM-Fit is designed and engineered specifically for the 2004-2008 Super Crew / Super Cab trucks to ensure an OEM fit without impeding the operation of the back seat. High-Grade MDF for Ultimate structural rigidity and no-flex construction. .76 Cubic Feet Net Volume internal air space is ideal for tight accurate bass reproduction. Subwoofer Mounting Depth is 5.25” which is ideal for lower profile subwoofers. Specially Formulated Aliphatic Wood Glue to ensure an airtight seal between all MDF parts with a second application of glue around all internal joints after final assembly. Pneumatic Applied Brad Nails to pull tight and hold the MDF parts during the glue drying process and help assure a no-leak, no-rattle air chamber. Premium OEM Grade Carpeting for factory look and durability. Dimensions Sub cut out: 9.125”, mounting depth: 7” Front Height: 7.75”, Rear Height: 6.75”, Depth: 11.75” Specifications Configuration: Single Sealed Finish: Charcoal Carpeted Width:23.38" Height:6.75" Depth:11.75" Max Mounting Depth:5.25" Gross VolumePer Sub:1.15 Net Volume Per Sub:0.76

    1 Available for pickup

    $144.99

  • A-Trend A371-10CPV : Single 10" Vented Sub Box for F-150 Super Crew and Super Cab 2004-2008

    A-Trend A371-10CPV : Single 10" Vented Sub Box, 2004-2008 F-150 (SuperCrew and Super Cab)

    Pre-Order Today!

    Single 10-Inch Vented Carpeted Subwoofer-Enclosure for Select 2004-2008 Ford F-150 SuperCrew and Super-Cab Trucks CLICK HERE TO VIEW SUBWOOFERS THAT FIT THIS BOX! Accu-Tuned 10” Single Vented subwoofer enclosure designed for optimum bass response and low-frequency reproduction which is ideal for lower profile sound quality subwoofers. OEM-Fit is designed and engineered specifically for the 2004-2008 Super Crew / Super Cab trucks to ensure an OEM fit without impeding the operation of the back seat. High-Grade MDF for Ultimate structural rigidity and no-flex construction. .76 Cubic Feet Net Volume internal air space is ideal for tight accurate bass reproduction. Subwoofer Mounting Depth is 5.25” which is ideal for lower profile subwoofers. Specially Formulated Aliphatic Wood Glue to ensure an airtight seal between all MDF parts with a second application of glue around all internal joints after final assembly. Pneumatic Applied Brad Nails to pull tight and hold the MDF parts during the glue drying process and help assure a no-leak, no-rattle air chamber. Premium OEM Grade Carpeting for factory look and durability. Dimensions Sub cut out: 9.125”, mounting depth: 7” Front Height: 7.75”, Rear Height: 6.75”, Depth: 11.75” Specifications Configuration: Single Vented Finish: Charcoal Carpeted Width:32.00" Height:6.75" Depth:11.75" Max Mounting Depth:5.25" Gross VolumePer Sub:1.58 Net Volume Per Sub:1.04

    Pre-Order Today!

    $129.99

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