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In-Ceiling Subwoofer System with Dual 8-inch Subwoofer, 600 watts
Created from the same innovative technologies used to develop our free-standing powered subwoofers, the Fathom® ICS in-ceiling subwoofer systems are engineered to deliver outstanding bass performance, with nearly unlimited placement freedom.
Purpose-built to disappear into the ceilings of most home audio/theater environments, the 8-inch Fathom® ICS systems are designed to fit 2" x 6" or larger ceiling joists and a wide range of assembled joist widths, while operating through very small grilles. The grille’s clever design accommodates all common drywall thicknesses and can be easily painted to match a room’s decor.
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® ICS products.
Each 8-inch Fathom® ICS system is driven by a rack-mountable amplifier with up to 600 watts of clean power, programmed specifically for each system, and capable of driving 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, and high-pass crossover outputs, all accessible via an easy-to-use, menu-driven interface and LCD display. Note: D.A.R.O. functionality requires optional calibration microphone (sold separately).
The ICS-108 System fits 2" x 6" ceiling joists or larger, with assembled joists ranging from 16-inches to 25 1/2-inches on center. Consult your Authorized JL Audio Dealer 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) | 63.24 sq in / 0.0408 sq m |
| Effective Displacement | 95.0 cu in / 1.56 L |
| Amplifier Power | 600 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 |
| Joist/Stud Cavity Width (W) | Minimum: 16 in / 406 mm Maximum: 25.5 in / 648 mm (on center) |
| Joist/Stud Cavity Height (H) | Minimum: 58 in / 1,473 mm |
| Width (W) | 14 in / 355 mm |
| Height (H) | 40.71 in / 1,034 mm |
| Depth (D) | 5.13 in / 130 mm |
| Width (W) | 16.84 in / 428 mm |
| Height (H) | 1.75 in / 44 mm |
| Depth (D) | 13.63 in / 346 mm |
| Net Weight | 13.5 lb / 6.12 kg |
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