Fathom ICS-SYS-108 - Subwoofer JL Audio - Free user manual and instructions
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| Product Type | Powered Subwoofer |
| Brand | JL Audio |
| Model | Fathom ICS-SYS-108 |
| Driver Size | 10 inches (250 mm) |
| Amplifier Power | 500 watts RMS (continuous) |
| Frequency Response | 20 Hz - 200 Hz (±1.5 dB) |
| Impedance | 4 ohms (nominal) |
| Enclosure Type | Sealed (acoustic suspension) |
| Dimensions (H x W x D) | 14.5 in x 12.5 in x 14 in (368 mm x 318 mm x 356 mm) |
| Weight | 35 lbs (15.9 kg) |
| Power Requirements | 120 VAC, 50/60 Hz (internally fused) |
| Inputs | RCA line-level; LFE input; speaker-level (high-level) inputs |
| Outputs | RCA line-level output (pass-through) |
| Features | Automatic Room Correction (ARC); variable low-pass filter; phase control; auto on/off |
| Controls | Level, low-pass frequency, phase switch, power mode switch |
| Finish | Black textured vinyl (standard); custom finishes available |
| Warranty | 2 years (parts and labor) |
| Included Accessories | Power cord, owner's manual, remote control (optional) |
| Maintenance | Wipe with dry cloth; avoid liquid cleaners; keep vents clear |
| Safety Certifications | UL/ETL listed, CE compliant |
| Repairability | Amplifier module field-replaceable; driver replacement available |
Frequently Asked Questions - Fathom ICS-SYS-108 JL Audio
What is the recommended placement for the Fathom ICS-SYS-108 subwoofer?
Place the subwoofer in a corner or along a wall for optimal bass response. Avoid placing it in the center of the room. For best results, use the Automatic Room Correction feature to calibrate.
How do I connect the subwoofer to my receiver?
Use an RCA cable from your receiver's subwoofer output to the subwoofer's LFE input. If your receiver lacks a dedicated sub out, use the speaker-level inputs with the provided harness.
What does the Automatic Room Correction (ARC) do?
ARC measures the room's acoustics using the included microphone and adjusts the subwoofer's output to minimize peaks and dips, providing a flat frequency response at the listening position.
Can I use the subwoofer in a home theater system?
Yes, the Fathom ICS-SYS-108 is designed for both music and home theater. Use the LFE input for dedicated .1 channels or the line-level inputs for stereo music.
How do I set the low-pass filter?
Set the low-pass filter frequency to match your main speakers' lower limit (typically 80 Hz for THX). Adjust by ear or using a test tone to ensure seamless blending.
Why is my subwoofer not turning on?
Check that the power cord is securely connected and the outlet is live. Ensure the power mode switch is set to Auto or On. If still off, the internal fuse may be blown – consult a professional.
What is the phase control used for?
Phase control adjusts the timing of the subwoofer's output relative to your main speakers. Set it to 0° or 180° to achieve the best bass integration at your listening position.
Can I daisy-chain multiple subwoofers?
Yes, use the RCA output to connect to another subwoofer's input. Ensure the total impedance load does not exceed the amplifier's capability.
How do I clean the subwoofer?
Use a soft, dry cloth to wipe the cabinet. Do not use water or cleaning agents. Vacuum the driver grille carefully to remove dust.
What is the warranty coverage?
JL Audio offers a 2-year limited warranty covering defects in materials and workmanship. Registration is recommended. The warranty does not cover misuse or unauthorized repairs.
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USER MANUAL Fathom ICS-SYS-108 JL Audio
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Product information
Brand : JL Audio
Model : Fathom ICS-SYS-108
Category : Subwoofer