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Automotive Active Subwoofer Enclosures from JL-Audio

Automotive Active Subwoofer Enclosure Collection from JL-Audio

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.

2 products

  • 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

  • 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

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