JL Audio


JL Audio ACP108LG-W3V3 8” Active Subwoofer MicroSub+ DCD Amplifier 250w RMS

JL Audio ACP108LG-W3V3 8” Active Subwoofer MicroSub+ DCD Amplifier 250w RMS


Single 8W3v3 MicroSub+™ with DCD™ Amplifier, Ported, 0.40 Ω


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Product Information

Amplified Subwoofer System with Single 8W3v3-0.40 Subwoofer, Built-In 250W Class D Amplifier, Black Carpet - Ported Enclosure

With MicroSub+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this incredible subwoofer system utilizes our 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. 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.

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.


  • 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
  • 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)
  • External Width (W)    18.5 in / 470 mm
  • External Height (H)    11.125 in / 283 mm
  • External Depth (D1)    5.125 in / 130 mm
  • Net Weight    19.9 lb / 9.03 kg

What's Included

  • JL Audio ACP108LG-W3V3
  • Black metal grilles (installed)
  • Power connection plug (installed)
  • 30-amp ATO fuse (installed)
  • Speaker level input harness
  • Owner's manual

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