Fathom F212 V2 Dual 12″ Active Subwoofer

Fathom F212 V2 Dual 12″ Active Subwoofer


Powered Subwoofer with Dual 12-inch Subwoofers, 3600 watts. The f212v2 is the ultimate expression of the Fathom formula. It is ideal for larger spaces thanks to its higher efficiency and higher power output.

Local pickup or $11 flat rate shipping within Australia

The combination of dual ultra-long throw W7 12-inch drivers and a very powerful switching amplifier give it jaw-dropping performance capabilities at any listening level.

Because it is built with the same driver and amplifier technology as our flagship Gotham®, the f212v2 delivers a tremendous level of sound quality. Low distortion, excellent dynamic capabilities and shockingly deep bass extension will allow you to experience all the excitement of the most demanding cinematic material, while also being able to reproduce all the nuance and texture of your most delicate musical material.

A complete set of signal processing features is easily accessible on the front surface of every Fathom. These include a highly flexible low-pass filter, variable phase, switchable polarity, e.l.f. trim and our powerful Digital Automatic Room Optimization (D.A.R.O.) system. A calibrated microphone is included for the D.A.R.O. system. Input connections are made via unbalanced RCA connections or balanced Neutrik® combo XLR/TRS jacks. Also included is an XLR output to connect a second Fathom® as a slave unit.

DMA-optimised Motor System
DMA is JL Audio’s proprietary Dynamic Motor Analysis system aimed at improving dynamic motor behavior. As a result of DMA optimisation, JL loudspeaker’s motor systems remain linear in force over an extreme range of excursion while maintaining a highly stable fixed magnetic field over a wide power range. This leads to vastly reduced distortion and accurate transient performance… or put simply: tight, clean, articulate bass.

OverRoll Surround The OverRoll surround spans over the driver’s mounting flange, utilising available diameter wasted in conventional speakers. This allows the use of the wider roll necessary to control high-excursions without sacrificing precious cone area.

The W-Cone  is a unit-body cone assembly that delivers astonishing cone stiffness with minimal mass.  The shape also provides incredible torsional rigidity, which is critical to maintaining voice coil alignment at the suspension limits.
Floating-Cone Attach Method
This assembly technique ensures proper surround geometry in the assembled speaker for better excursion control and dynamic voice coil alignment. 

Plateau-Reinforced Spider Attachment A derivative of JL Audio’s VRC  technology, this bulletproof suspension attachment relieves stress from the spider material at high-excursions for enhanced reliability. Elevated Frame Cooling Technology This feature delivers cool air through slots directly above the top-plate to the voice coil of the speaker. This not only enhances power handling, but also sound quality by minimising dynamic parameter shifts and power compression. Radially Cross-Drilled Pole Piece This innovative venting system greatly enhances thermal dissipation and power handling by directing air flow onto the voice coil former, working in conjunction with the Elevated Frame technology. Fathom® Amplifier Technologies To fully realise the benefits of  JL Audio’s long excursion driver platforms, a huge amount of controlled power is needed. These lofty power requirements create a difficult challenge when the realities of typical home electrical circuits are considered. Our electronics engineering team conducted an intense analysis of demanding program material and its dynamic characteristics in order to balance current draw and actual output power requirements relative to the subwoofer system’s impedance characteristics.

After careful study, a pair of precisely engineered switching amplifiers employing JL Audio’s patented Class D feedback technology were created. These advanced designs are capable of unclipped output voltages equivalent to 1,500 watts (f112) and 2,500 watts (f113) of RMS power when referenced to the nominal loudspeaker impedance, allowing us to take full advantage of each driver’s full excursion envelope, while staying within the electrical supply limits of a home installation.
It’s not magic, but it certainly borders on it.
Automatic Room Optimisation:
A wise man named Murphy long ago prescribed that a subwoofer will generally sound best in the most impractical spot in the room… a fact that home theater professionals wrestle with constantly. Subwoofer placement almost always involves a compromise between sonic performance, practicality and aesthetics.
To face this dilemma head on, JL Audio subwoofer systems incorporate a clever piece of technology called Automatic Room optimisation (A.R.O.).
The A.R.O. system self-generates a series of calibration tones, measures the response at the listening position, analyses the shape and magnitude of the primary response error and configures an appropriate filter to tame it.  The system effectively allows for smooth, well-balanced sub-bass from a variety of locations that may have been less than ideal without A.R.O.

Fathom® powered subwoofers incorporate a comprehensive suite of signal processing tools. These include:

  • A low-pass filter with selectable slopes (12dB/octave Butterworth or 24dB/octave Linkwitz-Riley), variable from 30 Hz to 130 Hz, fully defeatable via switch
  • Fixed gain or Variable gain modes (selectable via switch), Variable gain from full mute to +15 dB over reference gain
  • Input polarity reversal, via switch
  • Variable phase from 0 to 280 degrees
  • ELF (Extreme Low Frequency) trim cuts extreme low frequencies by as much as -12 dB or boosts them by as much as +3 dB at 25 Hz.

Controls: Front and Centre We simply couldn’t find a good reason to place user controls at the back of the product, so we put them on the front, right above the woofer. It costs more to build them this way, but some things in life are worth a few more dollars… like not having to use a mirror and a flashlight to make a level adjustment. Final Assembly Fathom® and Gotham® powered subwoofers are assembled by a highly skilled team in our Miramar, Florida factory. Each assembly technician is responsible for the entire assembly process and follows documented procedures to ensure quality and consistency. Ergonomic workstations with hydraulic lifts and multiple torque-controlled tools allow for efficient and precise assembly of every product to the exact specifications established by the Engineering Department.

While quality is engineered into every one of our products, it must also be verified and documented with defined, repeatable test protocols. For this reason, every Fathom and Gotham’s components are tested individually and as a connected system before assembly. At the end of final assembly, every subwoofer must pass a battery of electrical, functional and acoustic tests before it ships to our authorized dealers.


Enclosure Type Sealed
Enclosure Finish Black Gloss
Frequency Response (Anechoic) 20 – 97 Hz (±1.5dB) -3 dB at 19 Hz / 110 Hz -10 dB at 15 Hz / 157 Hz
Effective Piston Area (Sd) 168 sq in / 0.1084 sq m
Effective Displacement 574 cu in / 9.4 L
Amplifier Power 3000 W RMS short-term
Power Modes Off, On or Automatic (Signal-Sensing)
Light Modes Off, On or Dim

Signal Processing

Unbalanced Inputs Stereo or Mono (two RCA jacks)
Balanced Inputs Stereo or Mono (two female XLR jacks)
Speaker/High-Level Inputs N/A
Input Grounding Isolated or Grounded
Input Modes Master or Slave
Level Control Reference (fixed gain) or Variable, from full mute to +15dB over reference gain
Filter Mode Low-Pass
Filter Slope (dB/Octave) 12 dB or 24 dB
Filter Frequency Range 30 Hz – 130 Hz
Filter Defeatable Yes
Polarity 0 or 180 degrees
Phase Variable, 0 – 280 degrees
Extreme Low Frequency (E.L.F.) Trim Variable, -12 dB to +3 dB at 25 Hz
Line Outputs N/A
Output to Slave Balanced (one male XLR jack)
Calibration Mode Automatic Room Optimization (A.R.O.), incudes laboratory-grade microphone

Width (W) 14.92 in / 379 mm
Height (H) 31.96 in / 812 mm
Depth (D) 20.39 in / 518 mm
Net Weight 220 lb / 100.0 kg
Note: Height dimensions include feet.


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