JL Audio IWS-SYS-2, IWS-SYS-1 owner manual Balanced Inputs, Technical Notes

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CONNECTING YOUR Fathom IWS

Balanced Inputs

If your home-theater receiver or preamplifier/processor provides balanced outputs, the Fathom IWS amp’s balanced inputs are the preferred connection. Balanced connections are used extensively in professional studios and sound reinforcement applications for a number of very good reasons. Besides ensuring proper grounding between components, balanced signal transmission is designed to cancel induced cable noise from the surrounding environment (particularly important with long cable runs). The bottom line is that your system will be far less likely to exhibit humming or other extraneous noises if you use balanced connections.

The Fathom IWS subwoofers feature individual left and right balanced input connections with XLR “combo” jacks. These special jacks accept either a three-pin male XLR connector or a “tip-ring-sleeve” (TRS) 1/4-inch (6.3 mm) connector for compatibility with a wide range of equipment.

For systems with a mono subwoofer or “LFE” channel connection, only the jack labeled “Left or Mono” will be used. This applies to most modern multi- channel receivers and preamplifier/processors. Separate left and right input jacks are provided for systems without a dedicated mono subwoofer connection. This typically applies to two-channel audio equipment.

Appropriate balanced cables are available from your JL Audio dealer and are not included with the Fathom IWS.

Technical Notes:

•Do not use the balanced inputs with unbalanced signals via adaptors. The unbalanced inputs of the Fathom IWS are optically isolated and preferable in situations where only an unbalanced signal source is available. Balanced input impedance is 10 kohms.

•Input connectors are configured according to Audio Engineering Society recommendations for balanced signal cables as follows:

XLR Connection Pin 1: Shield Pin 2: Positive Pin 3: Negative

TRS connection: Tip: Positive Ring: Negative Sleeve: Shield

IMPORTANT: IF YOUR RECEIVER OR PREAMPLIFIER/PROCESSOR DOES NOT HAVE XLR OR 1/4-INCH TRS BALANCED OUTPUTS, PLEASE REFER TO THE “UNBALANCED INPUTS” SECTION ON PAGE 17 FOR INPUT CONNECTION INFORMATION. DO NOT ATTEMPT TO CONNECT UNBALANCED OUTPUTS TO THE Fathom IWS’S BALANCED INPUTS VIA ADAPTORS.

The Left and Right inputs on the Fathom IWS are internally summed to a single mono channel. Since the Fathom IWS is inherently a “mono” or single channel device, you can use the Left and Right inputs for the master Fathom IWS and then distribute the summed mono signal to additional slave Fathom IWSs in the system.

IMPORTANT

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Fathom IWS

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Contents IWS-SYS-1 IWS-SYS-2 Important Safety Instructions Risk of Electric Shock Do not OpenFathom IWS Table of Contents IntroductionProduct Overview Placing Your Fathom IWS Cabinets in Your Listening Room Best Seating Positions Most accurate bass performanceRack Ears End Covers Using Two Fathom IWS Enclosures Recommended Subwoofer Placement Options for Four Fathom IWSs Rear Controls and Connectors Front Control PanelPower Switch Power switch has three positionsFront Panel Controls in Detail Automatic Room Optimization A.R.OInput Mode Indicators Level ModeDemo Button Defeat ButtonMaster Level Knob LightsLP Filter LP FreqF. Trim PhasePolarity Balanced Inputs Technical NotesUnbalanced Inputs RCA-type connection Tip PositiveGrounded / Isolated Switch Input Mode SwitchesMaster / Slave Switch Output to Slave connector is designed to be used as follows Output to Slave ConnectorIEC-Style AC Connector Fathom Rear Controls Master Fathom Rear Controls Master Fathom Rear Controls Slave Stereo Active Crossover Balanced Outputs Fathom IWS Recommended Setup Procedures Preparation for Setup ProcessOn your Home Theater Receiver or Preamp/Processor On your Active Crossover or Bass Management ProcessorOn the Fathom IWS’s Front Panel Recommended Setup Procedures Subwoofer System SetupFathom IWS Polarity and Phase Adjustment Extreme Low Frequency e.l.f. TrimFrequently Asked Questions Is the Fathom IWS magnetically shielded?Troubleshooting Limited Warranty / Service Information If you need service on your JL Audio productFor Service Information in the U.S.A. please call International WarrantiesFeatures

IWS-SYS-1, IWS-SYS-2 specifications

JL Audio has made a significant mark in the audio industry with its innovative products, particularly in the realm of marine and automotive sound systems. Among their diverse range of offerings, the IWS-SYS-2 and IWS-SYS-1 stand out as exceptional choices for esteemed audio enthusiasts seeking quality audio performance in unique environments.

The IWS-SYS-2 is engineered for those who demand powerful sound without sacrificing design. It features dual 8-inch subwoofers with a carefully crafted enclosure that effectively enhances low-frequency response. The system is built using robust materials that ensure durability and longevity, especially in marine applications where moisture and salt can wreak havoc on less-prominent audio equipment.

One of the hallmarks of the IWS-SYS-2 is its innovative media technology enhancement. This system employs JL Audio's proprietary, advanced signal processing that optimizes audio performance by ensuring crisp highs and thunderous lows, while minimizing distortion even at peak volume levels. Furthermore, the system includes customizable settings to accommodate various listening environments, making it an adaptable choice for diverse applications.

On the other hand, the IWS-SYS-1 focuses on providing a simpler, yet equally impressive audio experience. It features a single 8-inch subwoofer that delivers rich bass response and clarity. This system is ideal for those who want to introduce high-quality audio to smaller spaces without overwhelming them with subwoofer power. The IWS-SYS-1 also boasts a user-friendly installation process that makes it accessible for both professionals and DIY enthusiasts alike.

Both models are designed with marine-grade components, providing resistance against corrosion and environmental challenges that are common in boating and harsh weather conditions. The weather-resistant finish and UV-protected materials ensure that aesthetics remain intact without compromising sound quality.

Overall, the JL Audio IWS-SYS-2 and IWS-SYS-1 are impressive entries in the realm of marine audio solutions. With their respective strengths in sound performance, design, and resilience, these systems exemplify JL Audio's commitment to delivering exceptional audio experiences. Whether you opt for the robust full-power capabilities of the IWS-SYS-2 or the streamlined elegance of the IWS-SYS-1, both systems promise to elevate your sonic adventures to new heights.
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