JL Audio Fathom f112 v2 12″ Subwoofer

The JL Audio Fathom f112 v2 is a 12″ sealed-enclosure subwoofer built around the same W7-HT driver and switching amplifier technology used in JL Audio’s flagship Gotham subwoofer line, delivering 1,800 watts of short-term power from a compact cabinet well-suited to larger listening rooms. The W7-HT drive unit achieves extreme excursion through a combination of DMA-optimized motor and suspension geometry, W-Cone construction, FCAM voice coil alignment, and dual-path thermal management via Elevated Frame Cooling and a Radial Cross-Drilled Pole-Piece—enabling very deep extension to 19Hz (–3dB) alongside high output with low distortion. A complete set of studio-grade signal processing controls is accessible on the front panel, including a variable low-pass filter, variable phase, switchable polarity, Extreme Low Frequency trim, and JL Audio’s Digital Automatic Room Optimization (D.A.R.O.) system, which uses an included laboratory-grade microphone and onboard DSP to automatically correct in-room frequency response. The f112 v2 is finished in gloss black and ships with a removable fabric grille.

Key Features

• W7-HT 12″ drive unit — JL Audio’s highest-technology subwoofer driver design, shared with the flagship Gotham line; extreme excursion capability with outstanding linearity and dynamic stability
• 1,800W switching amplifier — short-term RMS power; large toroidal transformer; patented circuit designed to enhance amplifier control and fidelity
• D.A.R.O. (Digital Automatic Room Optimization) — onboard DSP analyzes in-room frequency response using the included laboratory-grade microphone and automatically applies correction; optimizes bass performance regardless of subwoofer placement
• DMA-optimized motor and suspension — proprietary motor, suspension, and cone modeling reduces distortion and extends linear excursion for powerful, clean output at any level
• W-Cone construction — two lightweight mineral-filled polypropylene skins bonded in a W-cone profile; combines rigidity, moisture resistance, and durability without adding mass
• FCAM (Floating Cone Attach Method) — bonds the surround/cone assembly to the voice coil former and spider structure in a way that maintains proper surround geometry throughout the excursion range, supporting accurate dynamic voice coil alignment
• Elevated Frame Cooling and Radial Cross-Drilled Pole-Piece — two independent thermal management systems work together: the frame cooling design passes high-velocity air across the voice coil top plate; the cross-drilled pole-piece directs additional airflow onto the voice coil former; together they increase power handling and long-term reliability
• Overroll surround technology — recovers cone area typically lost at the surround in conventional subwoofer designs, allowing the f112 v2 to achieve its massive excursion without reducing effective piston area
• Front-panel signal processing — variable low-pass filter (30–130Hz; 12 or 24dB/oct; defeatable); variable phase (0–280°); switchable polarity (0° or 180°); Extreme Low Frequency trim (–12 to +3dB at 28Hz); level control (reference fixed gain or variable to +15dB above reference, down to full mute)
• Flexible signal inputs — balanced stereo or mono (two female XLR jacks); unbalanced stereo or mono (two RCA jacks); switchable isolated or grounded input; master or slave input modes; balanced slave output (male XLR)
• Power and light modes — power: off, on, or automatic signal-sensing; light: off, on, or dim
• Sealed enclosure — gloss black finish — compact sealed cabinet; removable fabric grille included

Specifications

• Driver Size: 12 in.
• Enclosure Type: Sealed
• Amplifier Power: 1,800W (short-term RMS)
• Frequency Response (Anechoic, ±1.5dB): 21–119Hz
• Frequency Response (–3dB): 19Hz / 150Hz
• Frequency Response (–10dB): 17Hz / 167Hz
• Effective Piston Area: 84 in²
• Effective Displacement: 287 cu in (4.7L)
• Low-Pass Filter Range: 30–130Hz
• Low-Pass Filter Slope: 12 or 24dB/oct; defeatable
• Phase: Variable, 0–280°
• Polarity: 0° or 180°
• ELF Trim: –12 to +3dB at 28Hz
• Level Control: Reference (fixed) or variable (full mute to +15dB over reference)
• Balanced Inputs: 2 × female XLR (stereo or mono)
• Unbalanced Inputs: 2 × RCA (stereo or mono)
• Input Grounding: Isolated or grounded (switchable)
• Input Mode: Master or slave
• Slave Output: 1 × male XLR (balanced)
• Calibration: D.A.R.O. (includes laboratory-grade microphone)
• Power Modes: Off; on; automatic (signal-sensing)
• Light Modes: Off; on; dim
• Finish: Gloss black
• Grille: Removable fabric (included)
• Dimensions (H × W × D): 18.5 × 15.06 × 17.75 in.
• Weight: 117 lbs
• Warranty: 3 years