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JL Audio fathom v2 User Manual

JL Audio fathom v2
72 pages
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Owner’s Manual / Manual del Propietario
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JL Audio fathom v2 Specifications

General IconGeneral
BrandJL Audio
Modelfathom v2
CategorySubwoofer
LanguageEnglish

Summary

Safety Instructions

Safe Operation Guidelines

Read and retain instructions, heed warnings, and follow all operating and use instructions.

Environmental & Usage Precautions

Avoid water/moisture, ensure proper ventilation, keep away from heat, protect power cords.

Electrical Safety Precautions

Connect to correct power supply, protect cords from damage, and avoid overloading outlets.

Safety Instructions (Continued)

Cleaning & Maintenance Safety

Clean only as recommended, unplug during nonuse, disconnect during storms, and handle carefully.

Serviceable Damage Conditions

List of conditions requiring qualified service personnel, including damaged cords, liquid entry, or physical damage.

Electrical Safety & Grounding

Avoid overloading outlets, do not defeat grounding prong, disconnect during storms.

FCC Compliance Statement

Product Introduction

JL Audio Fathom v2 Technologies

Proprietary Speaker Tech

Includes DMA Motor System, OverRoll Surround, W-Cone, Floating-Cone Attach, Plateau-Reinforced Spider.

Advanced Cooling & Circuitry

Features Elevated Frame Cooling, Radially Cross-Drilled Pole Piece, and High-Damping Feedback Circuit.

Product Overview

Subwoofer Placement Guide

Cabinet Installation Guidelines

If you are planning to install your Fathom v2 inside a cabinet, please refer to the guidelines on page 8.

Single Subwoofer Placement Options

Built-in Installation Considerations

Dual Subwoofer Setup

Dual Subwoofer Placement Options

Triple Subwoofer Placement Options

Three/Four Subwoofer Setup

Unpacking the Fathom v2

Front Control Panel Overview

Rear Panel Controls & Connectors (Models)

Rear Panel Controls & Connectors (f110v2)

Front Panel Controls: Power & D.A.R.O.

Power Switch Operation

The 'Power' switch determines the operational readiness of the Fathom v2 subwoofer and should be the only switch used to turn the Fathom v2 on and off.

D.A.R.O. Overview

A powerful feature of the JL Audio Fathom v2 subwoofers is their innovative Digital Automatic Room Optimization (D.A.R.O.) technology.

Calibration Microphone Input

This input is for connecting the supplied JL Audio calibration microphone to the Fathom v2 subwoofer.

Front Panel Controls: Buttons & Indicators

Control Buttons (Demo, Defeat, Calibrate)

Buttons for demo tones, D.A.R.O. defeat, and calibration sequence initiation.

Input Mode Indicators

LEDs indicating Master or Slave input mode selection.

Level Mode Selector

Switch to select between 'Reference' and 'Variable' output level modes.

Front Panel Controls: Level, Filters, Lights

Master Level Knob

Controls the output level when the 'Variable' Level Mode is selected.

Lights Selector Switch

Selects indicator light modes: Off, Dim, or On.

Low Pass Filter Controls

Sets LP filter slope (Off, 12 dB, 24 dB) and cutoff frequency (30 Hz - 130 Hz).

Front Panel Controls: Tone & Phase

E.L.F. Trim Control

Adjusts extreme low frequency (-12 dB to +3 dB at 24 Hz) for room tailoring.

Polarity Switch

Selects between normal (0 deg) and reversed (180 deg) signal polarity.

Phase Control Knob

Adjusts subwoofer output timing relative to main speakers (0-270 degrees).

Connecting Your Fathom v2

Balanced Input Connections

Connect using XLR or 1/4-inch TRS connectors for superior noise rejection and grounding.

Connecting Your Fathom v2 (Continued)

Unbalanced Input Connections

Connect using RCA-type connectors; optically isolated for minimizing noise.

Rear Panel Input Mode Switches

Grounding Mode Switch

Select between 'Grounded' or 'Isolated' mode for unbalanced RCA inputs to minimize hum.

Master/Slave Operation Switch

Designates units as 'Master' or 'Slave' for multi-subwoofer systems and D.A.R.O. optimization.

System Connection Diagrams

'Output to Slave' Connector

Connects master Fathom v2 to slave units via balanced XLR output for signal distribution.

IEC-Style AC Power Connector

Connects the included power cord; ensure voltage compatibility and use dedicated circuits if needed.

Connection Diagram 1: Single Subwoofer Setup

Connection Diagram 2: Multi-Subwoofer Setup

Connection Diagram 3: Mono 2-Channel Setup

Connection Diagram 4: Stereo 2-Channel Setup

Recommended Setup Procedures

Setup Preparation Steps

Confirm system settings before beginning the setup process for a neutral starting point and effective setup.

Receiver/Processor Setup Settings

Set speaker size, distances, subwoofer level, and tone controls before subwoofer setup.

Crossover/Bass Management Settings

Configure active crossover or bass management for low-pass and high-pass filters and output level.

Front Panel Setup Adjustments

Power & Lights Setup

Set Power switch to 'On' and Lights switch to 'On'.

Input Mode & Level Setup

Confirm Input Mode indicators and set Level Mode switch to 'REF'.

Filter, Frequency & Tone Setup

Set LP Filter, LP Freq, e.l.f. trim, Polarity, and Phase controls.

D.A.R.O. Defeat Setup

Press the D.A.R.O. defeat switch to keep the red light lit.

Recommended Setup Procedures (Continued)

Subwoofer Level Adjustment

Adjust subwoofer level to blend with other speakers using receiver control or Master Level knob.

Polarity & Phase Adjustment

Adjust Polarity switch and Phase control to achieve natural sound and smooth transition with satellite speakers.

Subwoofer Location Experimentation

Experiment with subwoofer placement to achieve smooth bass. Re-run setup after moving.

Applying Digital Automatic Room Optimization (D.A.R.O.)

Mic Connection & Placement

Connect calibration microphone to Fathom v2 and place at listening seat.

Initiate Calibration Sequence

Press 'Calibrate' button and return to listening seat within 5 seconds.

D.A.R.O. Measurement & Correction

Subwoofer plays noise sequence for ~3 mins while D.A.R.O. measures and corrects room response.

D.A.R.O. & E.L.F. Trim Adjustment

Clearing D.A.R.O. Settings

Press Demo and Defeat buttons quickly to clear D.A.R.O. settings and turn off Calibrate light.

Extreme Low Frequency (e.l.f.) Trim

Adjust the 'e.l.f. trim' control to adjust extreme low bass extension at 24 Hertz for room tailoring.

Frequently Asked Questions

Object Placement & Shielding

Avoid placing objects on subwoofer; ensure 3-4 ft separation from TV for magnetic shielding.

Auto Mode Power & Unplugging

Auto mode uses minimal power; unplug during storms and extended absences for safety.

Cleaning Your Fathom v2

Troubleshooting Guide

No Sound Troubleshooting

Check power, connections, receiver settings, and cables if the subwoofer produces no sound.

Bass Level/Quality Troubleshooting

Address level changes, muddy bass, or heavy bass by checking settings, trim, and placement.

System Noise Troubleshooting

Troubleshoot hum or noise by checking input modes, upstream components, and cables.

Troubleshooting (Continued)

D.A.R.O. Calibration Failure

Troubleshoot calibration failure due to microphone issues or incorrect connections.

Subwoofer Audibility Outside

Address excessive volume by reviewing Master Level, seeking noise isolation, or moving the subwoofer.

Main Fuse Holder Access

Product Specifications

Warranty & Service Information

Service & Return Procedures

Contact authorized dealer for warranty returns with proof of purchase. Return only defective components.

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