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Summary of Contents for JL Audio Fathom IWSv2-SYS-113
- Page 1 IWSv2-SYS-113 IWSv2-SYS-213 Owner’s Manual...
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Page 2: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence CAUTION of uninsulated “dangerous voltage”... - Page 3 12) Cleaning — The subwoofer and amplifier should be cleaned only as recommended in the operating instructions. 13) Nonuse Periods — The power cord of the subwoofer amp should be unplugged from the outlet when the subwoofer is left unused for long periods of time.
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Page 4: Table Of Contents
Specifications: ............36 INTRODUCTION Congratulations on your purchase of a JL Audio Fathom v2 powered subwoofer system. This product has been critically engineered to deliver exceptional performance in your home theater or audio system for many years to come. -
Page 5: Product Overview / Package Contents
PRODUCT OVERVIEW JL Audio Fathom IWSv2 subwoofers combine a state-of-the-art JL Audio subwoofer driver and electronics/amplifier package with a highly optimized enclosure to deliver an exceptional listening experience in your home theater or home audio system. The subwoofer driver in your Fathom v2 subwoofer system is capable of outstanding linear excursion without distress or audible distortion. -
Page 6: Placing Your Fathom Iwsv2 In Your Listening Room
PLACING YOUR FATHOM IWSV2 CABINETS IN YOUR LISTENING ROOM: Your listening room or theater is an integral part of your sound reproduction system. The physical dimensions of the room and its furnishings, materials, doors and windows play an important role in defining how your system sounds. When you place a sound source in an enclosed rectangular space, “standing waves”... - Page 7 Recommended Subwoofer Placement Options for One Fathom IWSv2 Enclosure M O RE IN TEN SE M ORE IN TE N SE RECOMMENDED SUBWOOFER PLACEMENT ZONES (For Single Subwoofer) COMPROMISED SEATING POSITIONS (Results in weaker, uneven bass performance) CENTERLINE OF ROOM BEST SEATING POSITIONS (Most accurate bass performance) APPROX.
- Page 8 SPECIAL AMPLIFIER CONSIDERATIONS FOR RACK MOUNTING OR CUSTOM CABINET INSTALLATIONS Fathom IWSv2 amplifiers are designed to be “built-in” friendly. All typically needed controls are located on the front panel. A Fathom IWSv2 amp can be easily integrated into an equipment rack or custom cabinetry by following a few simple guidelines.
- Page 9 Using Two Fathom IWSv2 Enclosures Recommended Subwoofer Placement Options for Two Fathom IWSv2s When using two Fathom IWSv2 boxes, try placement along the front wall near the front left and right speakers, or at the center points of opposing walls as shown at right. Experimentation with listener placement is recommended to achieve the best results –...
- Page 10 Recommended Subwoofer Placement Options for Three Fathom IWSv2s Using Three or Four Fathom IWSv2 Enclosures Research indicates that the smoothest bass response for a large listening area can be achieved using four subwoofers, placing one at the midpoint of each of the four walls (although using two or three subwoofers can be almost as good).
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Page 11: Front Control Panel Layout
Front Control Panel The labeled Figure below depicts the front control panel of a Fathom IWSv2 subwoofer. D.A.R.O. Level Mode Lights LP freq. (Hz) phase (deg.) page 13-14 page 14 page 14 page 15 page 16 Power Input Mode Master Level LP Filter e.l.f. -
Page 12: Front Panel Controls In Detail
FRONT PANEL CONTROLS IN DETAIL Power Switch The “Power” switch determines the operational readiness of the Fathom IWSv2 system and should be the only switch used to turn the Fathom IWSv2 amplifier on IMPORTANT and off. Do not use a power strip switch, switched outlet or any other external switch as these may result in undesirable and potentially damaging transient pops. - Page 13 Digital Automatic Room Optimization (D.A.R.O.) A powerful feature of the JL Audio Fathom IWSv2 subwoofers is their innovative Digital Automatic Room Optimization (D.A.R.O.) technology. This one-touch system includes 18 bands of digital equalization to eliminate the largest acoustic response peaks in your home theater at the main listening seat, greatly improving the in-room low-frequency response.
- Page 14 During the D.A.R.O. test sequence the Calibrate button’s green LED will blink quickly to alert the user to two special conditions: 1. “JL Audio Microphone NOT Connected”: If you forget to connect the mic before trying to start a Calibration you will get this alert. Press the Calibrate button once to cancel the alert, connect the D.A.R.O.
- Page 15 LP Filter The Low Pass (LP) Filter selector switch determines the operating mode of the Fathom IWSv2’s built-in low pass filter. “Off” defeats the low pass filter, completely removing this circuit from the signal path. “12 dB” sets the roll off slope of the low pass filter to a 12 dB per octave slope (Butterworth alignment).
- Page 16 Polarity The Polarity switch allows the user to select between normal (0 deg) and reversed (180 deg) signal polarity. The Polarity switch will primarily affect the small frequency range around the crossover point between your subwoofer and satellite speakers. Unlike the Phase control, which effectively adds time delay, the Polarity switch produces an instantaneous reversal of the signal’s amplitude peaks.
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Page 17: Connecting Your Fathom Iwsv2(S)
Fathom IWSv2s in the system. Appropriate balanced cables are available from your JL Audio dealer and are not included with the Fathom IWSv2. Technical Notes: • Do not use the balanced inputs with unbalanced signals via adaptors. - Page 18 Unbalanced Inputs The Fathom IWSv2 subwoofer amp features individual left and right unbalanced RCA-type input connectors. These are the most commonly used connectors for home audio applications and must be used if your receiver or preamplifier/processor does not provide balanced outputs. While unbalanced connections are not as noise-immune as a balanced connection, Fathom IWSv2 subwoofers employ ground isolation on the unbalanced inputs to minimize the possibility of noise in your system.
- Page 19 Input Mode Switches: Two switches are located on the rear panel to control unbalanced signal grounding and master/slave operation. “Isolated / Grounded” Switch The “Isolated / Grounded” Input Mode switch affects only the unbalanced RCA inputs and is designed to facilitate a quiet, hum-free connection to your audio or home theater system.
- Page 20 (up to ten Fathom IWSv2s may be connected in this configuration). Appropriate balanced cables with XLR terminations are available from your JL Audio dealer and are not included with the Fathom IWSv2. Technical Notes: • The “Output to Slave” signal carries any signal processing selected on the Master Fathom IWSv2 (including the Master Level setting and D.A.R.O.
- Page 21 Subwoofer Outputs The Fathom IWSv2 amp is equipped with a pair of Neutrik speakOn® jacks for speaker connections. Both jacks (labeled A & B) are configured for 2 wire termination (speaker + & speaker –) and are connected in parallel, inside the Fathom IWSv2 amp, so you can use either output when connecting a single subwoofer.
- Page 22 Reconnect the AC power cord. If the replacement fuse blows immediately after replacing a fuse replacement, the amplifier may require service. Please contact your Authorized JL Audio Retailer or Distributor. Fuse Specifications...
- Page 23 SYSTEM CONNECTION DIAGRAM 1: PROCESSOR (BALANCED OUTPUTS) RECEIVER / PROCESSOR (UNBALANCED OUTPUTS) One Fathom IWSv2 to Home Theater Receiver or PRE OUT FRONT REAR CENTER OUTPUTS Home Theater Preamp/Processor Most home theater receivers and preamp/processors provide a single FRONT REAR (mono) subwoofer output.
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Page 24: System Connection Diagrams
SYSTEM CONNECTION DIAGRAM 2: PROCESSOR (BALANCED OUTPUTS) RECEIVER / PROCESSOR (UNBALANCED OUTPUTS) Multiple Fathom IWSv2s to PRE OUT Home Theater Receiver or FRONT REAR CENTER OUTPUTS Home Theater Preamp/Processor To greatly simplify using multiple subwoofers in a single home theater FRONT REAR system, Fathom IWSv2s incorporate a... - Page 25 SYSTEM CONNECTION DIAGRAM 3: STEREO ACTIVE CROSSOVER (BALANCED OUTPUTS) STEREO ACTIVE CROSSOVER (UNBALANCED OUTPUTS) One Fathom IWSv2 in Mono to Two-Channel Audio System LOW OUT (SUB OUT) LOW OUT When connecting a Fathom IWSv2 (SUB OUT) LEFT RIGHT (or multiple Fathom IWSv2s) in mono to a two-channel audio system you will use both the “Left or Mono”...
- Page 26 SYSTEM CONNECTION DIAGRAM 4: STEREO ACTIVE CROSSOVER (BALANCED OUTPUTS) STEREO ACTIVE CROSSOVER (UNBALANCED OUTPUTS) Two Fathom IWSv2s in Stereo to Two-Channel Audio System LOW OUT (SUB OUT) LOW OUT When connecting two Fathom IWSv2s (SUB OUT) LEFT RIGHT in stereo to a two-channel audio system you will only use the “Left or Mono”...
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Page 27: Recommended Setup Procedures
RECOMMENDED SETUP PROCEDURES 1) Preparation for Setup Process: ........27-28 2) Apply D.A.R.O: . - Page 28 On the Fathom IWSv2’s Front Panel: Please turn off the home theater receiver or preamp/processor to make these adjustments. 1. “Power” Switch Flip each Fathom IWSv2’s “Power” switch to the “On” position. 2. “Lights” Switch Flip each Fathom IWSv2’s “Lights” switch to the “On” position. If you don’t see any lights on the front panel, you may have forgotten to plug the Fathom IWSv2 in or there may be a problem with the electrical circuit.
- Page 29 XLR cable to the remotely located Slave unit(s). 1) Applying Digital Automatic Room Optimization (D.A.R.O.) You are now ready to apply the power of JL Audio’s exclusive Digital Automatic Room Optimization system. This system will measure the response of the...
- Page 30 IMPORTANT! MAKE SURE THE ROOM IS QUIET DURING D.A.R.O. CALIBRATION! TURN OFF ANY NOISY APPLIANCES NEAR THE LISTENING ROOM (DISHWASHERS, WASHING MACHINES, ETC.) IMPORTANT IT IS PARTICULARLY IMPORTANT TO TURN OFF AIR CONDITIONERS OR HEAT PUMPS DURING CALIBRATION. THESE FORCED-AIR-TYPE HVAC SYSTEMS CAN CREATE MODERATE LEVELS OF 15 –...
- Page 31 3) Polarity and Phase Adjustment It is often helpful to have a second person operating these controls so that you can easily hear the changes from the primary listening seat. IMPORTANT Listening to familiar source material (preferably music with good upper bass and midbass response), flip the “Polarity”...
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Page 32: Frequently Asked Questions
FREQUENTLY ASKED QUESTIONS Is the Fathom IWSv2 magnetically shielded? Fathom IWSv2 subwoofers are not magnetically shielded. To avoid magnetic distortion with certain television types, place the Fathom IWSv2 at least 3-4 feet (1 - 1.5m) from your screen. Will my electric bill be high if I leave the Fathom IWSv2 in “Auto” mode? When in “Auto”... -
Page 33: Troubleshooting
6-10 of this manual. D.A.R.O. Calibration attempt gives fast blinking Calibrate light 1. Be sure that the included JL Audio Microphone is properly plugged into the front panel jack. Calibration will ONLY proceed with the JL Audio microphone connected. Connecting any other mic will cause the calibration to fail. - Page 34 This page is intentionally left blank. Page 34 | Fathom IWSv2...
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Page 35: Limited Warranty / Service Information
JL Audio for service. Cosmetic damage due to accident or normal wear and tear is not covered under warranty. -
Page 36: Specifications
O P E N I N G “JL Audio”, “Fathom IWSv2” and the JL Audio logo are registered trademarks of JL Audio, Inc., “Ahead of the Curve” is a trademark of JL Audio, Inc. Due to continuous product development, all specifications are subject to change without notice.
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