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Automotive Active Subwoofer Enclosures

Automotive Active Subwoofer Enclosure Collection

Upgradeable Add-on Car Audio Powered Subwoofer Systems

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 ACP208LG-W3v3 : 8" Powered Dual Subwoofer Enclosure - 500W JL Audio ACP208LG-W3v3 : 8" Powered Dual Subwoofer Enclosure,  side view.

    JL Audio ACP208LG-W3v3 : 8" Powered Dual Subwoofer Enclosure - 500W Ported

    Pre-Order Today!

    W3-Series 500-Watt Amplified Dual 8-Inch Ported Subwoofer System With MicroSub+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this incredible subwoofer system utilizes JL's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance W3v3 drivers. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Key to the enclosure’s performance is its efficient slot-ported design and precise tuning of its dual 8Wv3 subwoofer drivers, each in its separate airspace. Extensive interior bracing permits the use of thinner wall material that maximizes the enclosure's internal volume relative to its exterior volume. The port for each driver wraps around two walls of the enclosure to produce the necessary low tuning frequency that ensures excellent extension and response smoothness. The two flared port entries/exits, one on each end of the enclosure, further enhance sound quality by minimizing air-flow noises through each port. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. As with all MicroSub™ systems, these amplified versions produce the kind of output and extension normally associated with much larger systems. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. Steel mesh grilles are included to protect the subwoofer drivers. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (500 W @ 0.20 Ω)Nominal Impedance: 0.20 Ω Enclosure and Subwoofers Built in USA with global components. General Specifications Continuous Power Handling (RMS) Built-in amplifier 500 W @ 0.20 Ω System Nominal Impedance 0.20 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Slot-ported, Low-profile Finish Black carpet Grille Included Black Steel Mesh Signal Processing  Filter Mode(s) Low-Pass only Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 200 Hz Output Polarity Switch Yes Remote Subwoofer Level Control Optional (RBC-1) Physical Specifications External Width (W) 36.625 in / 905 mm External Height (H) 11.125 in / 283 mm External Depth (D1) 5.125 in / 130 mm Net Weight 34.9 lb / 15.83 kg

    Pre-Order Today!

    $929.99

  • Last One! JL Audio ACP112LG-TW1 : 12" Powered Thin Subwoofer Enclosure - 400W JL Audio ACP112LG-TW1 : 12" Powered Thin Subwoofer Enclosure, side view.

    JL Audio ACP112LG-TW1 : 12" Powered Thin Subwoofer Enclosure - 400W Ported

    1 Available for pickup

    TW1-Series 400-Watt Amplified 12-Inch Ported Subwoofer System With MicroSub+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this incredible subwoofer system utilizes JL's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Key to the enclosure’s performance is its efficient slot-ported design and precise tuning of its 12TW1 subwoofer driver. Extensive interior bracing permits the use of thinner wall material that maximizes the enclosure's internal volume relative to its exterior volume. The port wraps around two walls of the enclosure to produce the necessary low tuning frequency that ensures excellent extension and response smoothness. The flared port entry and exit further enhance sound quality by minimizing air-flow noises through the port. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. As with all MicroSub™ systems, these amplified versions produce the kind of output and extension normally associated with much larger systems. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. A steel mesh grille is included to protect the subwoofer driver. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)Nominal Impedance: 0.25 Ω Enclosure and Subwoofer Built in USA with global components General Specifications Continuous Power Handling (RMS) Built-in amplifier 400 W @ 0.25 Ω System Nominal Impedance 0.25 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Slot-ported, Low-profile Finish Black carpet Grille Included Black Steel Mesh JL Audio MicroSub+/PowerWedge+ Manual

    1 Available for pickup

    $749.99

  • Last One! JL Audio ACP110LG-TW1 : 10" Powered Thin Subwoofer Enclosure - 400W JL Audio ACP110LG-TW1 : 10" Powered Thin Subwoofer Enclosure, side view.

    JL Audio ACP110LG-TW1 : 10" Powered Thin Subwoofer Enclosure - 400W Ported

    1 Available for pickup

    TW1-Series 400-Watt Amplified 10-Inch Ported Subwoofer System With MicroSub+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this incredible subwoofer system utilizes JL's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Key to the enclosure’s performance is its efficient slot-ported design and precise tuning of its 10TW1 subwoofer driver. Extensive interior bracing permits the use of thinner wall material that maximizes the enclosure's internal volume relative to its exterior volume. The port wraps around two walls of the enclosure to produce the necessary low tuning frequency that ensures excellent extension and response smoothness. The flared port entry and exit further enhance sound quality by minimizing air-flow noises through the port. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. As with all MicroSub™ systems, these amplified versions produce the kind of output and extension normally associated with much larger systems. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. A steel mesh grille is included to protect the subwoofer driver. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)Nominal Impedance: 0.25 Ω General Specifications Continuous Power Handling (RMS) Built-in amplifier 400 W @ 0.25 Ω System Nominal Impedance 0.25 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Slot-ported, Low-profile Finish Black carpet Grille Included Black Steel Mesh JL Audio MicroSub+/PowerWedge+ Manual

    1 Available for pickup

    $679.99

  • Last One! JL Audio ACS112LG-TW1 : 12" Powered Thin Subwoofer Enclosure - 400W JL Audio ACS112LG-TW1 : 12" Powered Thin Subwoofer Enclosure, side view.

    JL Audio ACS112LG-TW1 : 12" Powered Thin Subwoofer Enclosure - 400W Sealed

    1 Available for pickup

    TW1-Series 400-Watt Amplified 12-Inch Subwoofer System In PowerWedge+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this subwoofer system employs JL's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Harnessing the performance and insanely small box requirements of the TW1 subwoofer driver, this subwoofer system is designed to deliver amazing sub-bass from an enclosure that is only 6.625 in. (168 mm) deep. Its low-profile enclosure design has been carefully engineered to the optimum sealed enclosure alignment for the 12TW1 driver and has been fine-tuned through extensive real-world listening. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. A steel mesh grille is included to protect the subwoofer driver. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)Nominal Impedance: 0.25 Ω Enclosure and Subwoofer built in USA with global components

 General Specifications Continuous Power Handling (RMS) Built-in amplifier 400 W @ 0.25 Ω System Nominal Impedance 0.25 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Sealed Finish Black carpet Grille Included Black Steel Mesh JL Audio MicroSub+/PowerWedge+ Manual

    1 Available for pickup

    $679.99

  • Alpine PWD-X5 : 265W Speaker System - 25W x 4ch + 240W Subwoofer

    Alpine PWD-X5 : 265W Speaker System - 25W x 4ch + 240W Subwoofer

    Pre-Order Today!

    The PWD-X5’s subwoofer increases the sound system’s overall bass output and when the product is installed under the front seat, it brings the sound stage forward in the vehicle for the best bass and imaging experience. With 165-watts available to the subwoofer and 25-watts x 4 to the speakers, this all-in-one solution lets you create a truly enjoyable and customizable sound experience in just about any in-vehicle cabin space. The PWD-X5 can also be used in non-traditional ways thanks to the Bluetooth® streaming capabilities. In situations where the car radio cannot be replaced, such as in a classic car, music can be streamed to the PWD-X5’s Bluetooth® connection then played through the car’s speakers while utilizing the PWD-X5’s bass and amplified power. If a head unit does not exist, such as on a motorcycle or a side-by-side, the music streamed from a smartphone to the PWD-X5’s Bluetooth® connection is used as the vehicle’s music source.  Specifications 25W x 4 +165W RMS 50W x 4 +240W Peak 4 RCA/Speaker Level Inputs 10-Band Parametric EQ Digital Time Correction Bluetooth Signal Inputs Remote Commander Included OS/Android and Desktop PC Tuning Software 13-13/16” x 9-11/16” x 3-3/16” CES 2019 Innovations Award Winner Alpine PWD-X5 Manual

    Pre-Order Today!

    $649.99

  • Last One! JL Audio ACS110LG-TW1 : 10" Powered Thin Subwoofer Enclosure - 400W JL Audio ACS110LG-TW1 : 10" Powered Thin Subwoofer Enclosure, side view.

    JL Audio ACS110LG-TW1 : 10" Powered Thin Subwoofer Enclosure - 400W Sealed

    1 Available for pickup

    TW1-Series 400-Watt Amplified 10-Inch Subwoofer System In PowerWedge+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this subwoofer system employs JL's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Harnessing the performance and insanely small box requirements of the TW1 subwoofer driver, this subwoofer system is designed to deliver amazing sub-bass from an enclosure that is only 5 inches (127 mm) deep. Its low-profile enclosure design has been carefully engineered to the optimum sealed enclosure alignment for the 10TW1 driver and has been fine-tuned through extensive real-world listening. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. A steel mesh grille is included to protect the subwoofer driver. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)Nominal Impedance: 0.25 Ω Enclosure and Subwoofer Built in USA with global components

 General Specifications Continuous Power Handling (RMS) Built-in amplifier 400 W @ 0.25 Ω System Nominal Impedance 0.25 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Sealed Finish Black carpet Grille Included Black Steel Mesh JL Audio MicroSub+/PowerWedge+ Manual

    1 Available for pickup

    $629.99

  • Last One! JL Audio ACP108LG-W3v3 : 8" Powered Subwoofer Enclosure - 250W JL Audio ACP108LG-W3v3 : 8" Powered Subwoofer Enclosure, side view.

    JL Audio ACP108LG-W3v3 : 8" Powered Subwoofer Enclosure - 250W Ported

    1 Available for pickup

    W3-Series 250-Watt Amplified 8-Inch Ported Subwoofer System With MicroSub+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this incredible subwoofer system utilizes JL Audio's exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance W3v3 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency. Key to the enclosure’s performance is its efficient slot-ported design and precise tuning of its 8Wv3 subwoofer driver. Extensive interior bracing permits the use of thinner wall material that maximizes the enclosure's internal volume relative to its exterior volume. The port wraps around two walls of the enclosure to produce the necessary low tuning frequency that ensures excellent extension and response smoothness. The flared port entry and exit further enhance sound quality by minimizing air-flow noises through the port. Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space. As with all MicroSub™ systems, these amplified versions produce the kind of output and extension normally associated with much larger systems. Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage. Finish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle. A steel mesh grille is included to protect the subwoofer driver. Construction: CNC-Cut High-Grade MDF Amplifier power: Built-in DCD™ Class D amplifier (250 W @ 0.40 Ω)Nominal Impedance: 0.40 Ω Enclosure and Subwoofer Built in USA with global components.

 General Specifications Continuous Power Handling (RMS) Built-in amplifier 250 W @ 0.40 Ω System Nominal Impedance 0.40 Ω Input Voltage Range @ RCA Inputs 70 mV - 1.40 V RMS Input Voltage Range @ High-Level Inputs 280 mV - 5.4 V RMS Recommended Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (ATO or ATC) Enclosure Type Slot-ported, Low-profile Finish Black carpet Grille Included Black Steel Mesh JL Audio MicroSub+/PowerWedge+ Manual

    1 Available for pickup

    $549.99

  • Alpine PWE-S8 : 8" 120W Subwoofer System

    Alpine PWE-S8 : 8" 120W Subwoofer System

    Pre-Order Today!

    The compact PWE-S8 amplified subwoofer system lets you add deep, accurate bass to your sound system without taking up much space in your vehicle. With the PWE-S8, the high-excursion 8-inch subwoofer and 120W gives strong bass output. Specifications RCA and speaker level inputs 120 Watt amp Frequency Response: 25Hz-152Hz Dimensions 13- 7/16" Wide x 9-1/16" Long x 2-13/16" Deep Alpine PWE-S8 Manual

    Pre-Order Today!

    $349.99

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