JL Audio Fathom IWS-SYS-108 In-wall Subwoofer


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In-Wall Subwoofer System with Single 8-inch Subwoofer Driver, 300 watts

Born from the same groundbreaking technologies used to develop free-standing powered subwoofers, the Fathom® IWS in-wall subwoofer systems deliver remarkable bass performance, while remaining largely concealed within most home audio/theater environments.

The 8-inch Fathom® IWS systems are smaller and easier to integrate than the larger in-wall Fathoms, fitting in all standard, 16-inch, on-center stud openings, and operating through very small grilles. These grilles accommodate all common drywall thicknesses, and can be easily painted to match the wall.

JL Audio Fathom IWS-SYS-113 In-wall Subwoofer

The subwoofer enclosures utilize extensive architectural features aimed at improving rigidity while keeping a very low profile and minimal wall thickness. A unique port design vents through a slot located at the perimeter of the driver mount to enhance efficiency and low-bass output. Inside the enclosure is a long-excursion, 8-inch thin-line woofer, built to exacting standards by JL Audio for the Fathom® IWS products.

Each 8-inch Fathom® IWS system is powered by a rack-mountable amplifier, capable of generating up to 600 watts of clean power and can drive up to two enclosures. A complete set of Fathom® signal processing features is also onboard, including our powerful, 18-band Digital Automatic Room Optimization (D.A.R.O.) system, all managed via an easy-to-use, menu-driven interface and LCD display. Note: D.A.R.O. functionality requires optional calibration microphone (sold separately).


The IWS-108 System fits 2" x 4" wall studs or larger. Contact us for specific application information.

Enclosure Finish: Flat Black (hidden from view when installed)

Grille finish: Primer White (paintable)

Enclosure Construction: CNC-Cut Birch Plywood


Enclosure Type: Ported
Enclosure Finish: Black Texture-Coated
Frequency Response (Anechoic): 24.9 Hz - 109 Hz (± 1.5 dB) -3dB at 24.6 Hz / 111 Hz -10dB at 23.4 Hz / 118 Hz
Effective Piston Area (Sd): 31.62 sq in / 0.0204 sq m
Effective Displacement: 47.5 cu in / 0.78 L
Amplifier Power: 300 W RMS short-term
Power Mode(s): Off, On or Automatic (Signal-Sensing or 12V Trigger)
12V Trigger Output Capacity: 150 mA (1/8-inch/3.5mm mini jack)
Light Modes: N/A

2 x 4 inch wall stud enclosure

Wall Cavity Width (W): Minimum: 14.375 in / 365 mm Maximum: 15.500 in / 394 mm
Wall Cavity Height (H): Minimum: 75 in / 1,905 mm
Width (W): 14 in / 355 mm
Height (H): 61.26 in / 1,565 mm
Depth (D): 3.25 in / 83 mm
Note:  Enclosure dimensions do not include L-brackets or vibration-dampening padding.

Due to the bespoke nature of our high-end music systems this product is not available to be purchased online. Please contact us for personalized service from one of our team of experts.