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JL Audio Gotham g213 Owner's Manual

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Summary of Contents for JL Audio Gotham g213

  • Page 1 g213 Owner’s Manual...

  • Page 2: Important Safety Instructions

    11) Power Cord Protection — Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit the subwoofer. Page 2 | Gotham g213...
  • Page 3 THIS SUBWOOFER IS CAPABLE OF PRODUCING VERY HIGH SOUND PRESSURE LEVELS. PLEASE EXERCISE RESTRAINT IN ITS OPERATION TO WARNING PROTECT YOUR HEARING FROM PERMANENT DAMAGE. | Gotham g213 Page 3...

  • Page 4: Table Of Contents

    INTRODUCTION Radially Cross-Drilled Pole Piece Congratulations on your purchase of a JL Audio Gotham powered (U.S. Patent #6,243,479) subwoofer system. Th is product has been critically Th is innovative venting system greatly engineered to deliver exceptional performance in your home enhances thermal dissipation and power theater or audio system for many years to come.

  • Page 5: Product Overview

    Gotham subwoofer system. Enjoy. PRODUCT OVERVIEW JL Audio Gotham subwoofers combine two state-of-the-art JL Audio subwoofer drivers and an electronics/amplifi er package within a highly optimized enclosure to deliver an exceptional listening experience in your home theater or home audio system.
  • Page 6 UNPACK AND PLACE THE GOTHAM. (THREE PEOPLE ARE RECOMMENDED.) IMPORTANT: BEFORE PLACING A GOTHAM IN YOUR LISTENING SPACE, MAKE SURE THAT THE FLOOR STRUCTURE IS CAPABLE OF SUPPORTING THE WEIGHT OF THE PRODUCT. CONSULT A PROFESSIONAL ENGINEER IF NECESSARY. Page 6 | Gotham g213...

  • Page 7: Placing Your Gotham In Your Listening Room

    SPECIAL CONSIDERATIONS FOR HANDLING THE GOTHAM Th e Gotham is extremely heavy and can be diffi cult to handle. Failure to handle it correctly during unpacking and placement can result in expensive damage which is not covered under warranty. | Gotham g213 Page 7...
  • Page 8 BEST SEATING POSITIONS (Most accurate bass performance) APPROX. 1/3 OF TOTAL ROOM LENGTH AWAY FROM BACK WALL COMPROMISED SEATING POSITIONS (More intense, but less accurate bass performance) CLOSE TO BACK WALL OF ROOM WORST SEAT Page 8 | Gotham g213...
  • Page 9 Experimentation with subwoofer and listener placement is recommended to achieve the best results – the benefi ts can be substantial. High-resolution measurements and professional system calibration are recommended for the best possible results & system performance. | Gotham g213 Page 9...
  • Page 10 – the benefi ts can be substantial. High-resolution measurements and professional system calibration are recommended for the best possible results & system performance. Recommended Subwoofer Placement Options for Four Gothams Page 10 | Gotham g213...

  • Page 11: Unpacking Your Gotham

    14. Install one of the included sliding discs under each of the Gotham’s three feet to facilitate pushing/positioning the subwoofer. IMPORTANT! PLEASE RETAIN ALL PACKAGING FOR SAFE IMPORTANT TRANSPORTATION OF THE SUBWOOFER AND FOR ANY FUTURE SERVICE. | Gotham g213 Page 11 JLA_SKU#011212_Rev1...

  • Page 12: Front Control Panel Layout

    Input Mode Level Mode Polarity LP Filter page 15 page 17 page 16 page 15 A.R.O. phase (deg.) e.l.f. trim (dB) page 14-15 page 17 page 17 calibration mic. LP freq. (Hz) page 14 page 16 Page 12 | Gotham g213...

  • Page 13: Rear Control And Connector Panel Layout

    Th e labeled Figure below depicts the rear panel of a Gotham subwoofer. Input Mode Output to Slave Connector Switches page 20 page 21 Unbalanced Balanced Inputs Inputs page 18 page 19 g213 IEC-Style AC Connector page 21 | Gotham g213 Page 13...

  • Page 14: Front Panel Controls In Detail

    A.R.O. setup procedure, refer to pages 29-30. Calibration Mic. Input Th is input is for connecting the supplied JL Audio calibration microphone to the Gotham subwoofer. Connect one end of the supplied cable to the microphone and the other end to this jack prior to using the A.R.O. system. Th e A.R.O.
  • Page 15 Calibrate Button Th e Calibrate button activates the ARO test sequence. Th e calibration routine will not start unless the supplied JL Audio test microphone is plugged into the Gotham subwoofer. Once the calibration routine is complete, the green light in the center of the “Calibrate”...
  • Page 16 LP Filter switch is set to “Off ”. 80 Hz is a commonly used fi lter frequency and usually serves as a good starting point for adjustments. Page 16 | Gotham g213...
  • Page 17 Phase control and listen for better defi ned mid-bass and a smoother transition between the subwoofer and satellite speaker systems. If no single setting sounds better than another, leave the Phase control at 0 degrees. | Gotham g213 Page 17...

  • Page 18: Connecting Your Gotham(S)

    Since the Gotham is inherently a Appropriate balanced cables are available from your JL Audio dealer and are “mono” or single channel device, you can not included with the Gotham.
  • Page 19 IMPORTANT: IF NOISE EXISTS AFTER CONNECTION, GOTHAMS ALLOW FOR GROUNDING OR ISOLATION OF THE UNBALANCED INPUTS. PLEASE IMPORTANT REFER TO THE “INPUT MODE SWITCHES” SECTION ON PAGE 20 OF THIS MANUAL FOR FURTHER INFORMATION ON MINIMIZING NOISE. | Gotham g213 Page 19...
  • Page 20 Gotham in “Slave” mode. If you are utilizing outboard signal processing and level-matching controls, activating the “Slave” mode will prevent anyone from aff ecting system parameters with the manual controls on the Gotham. Page 20 | Gotham g213...
  • Page 21 “Slave” Gotham’s “Left or Mono” XLR balanced input. Etc, etc. (up to ten Gothams may be connected in this confi guration).Appropriate balanced cables with XLR terminations are available from your JL Audio dealer and are not included with the Gotham.
  • Page 22 You will only use one of these input connection methods (not both). WARNING! TURN OFF THE GOTHAM AND ALL OTHER EQUIPMENT IN THE WARNING SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS! Page 22 | Gotham g213...
  • Page 23 Connections between the “Master” and “Slave” Gothams and between “Slave” Gothams are via balanced XLR cables ONLY. WARNING! TURN OFF THE GOTHAM(S) AND ALL OTHER EQUIPMENT IN WARNING THE SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS! | Gotham g213 Page 23...
  • Page 24 Gotham connected as shown on this diagram. See “Connection Diagram 2” on page 23 for slave connection explanation. WARNING! TURN OFF THE GOTHAM AND ALL OTHER EQUIPMENT IN THE WARNING SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS! Page 24 | Gotham g213...
  • Page 25 Gotham connected as shown on this diagram. See “Connection Diagram 2” on page 23 for slave connection explanation. WARNING! TURN OFF THE GOTHAM(S) AND ALL OTHER EQUIPMENT IN WARNING THE SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS! | Gotham g213 Page 25...

  • Page 26: Recommended Setup Procedure

    Select a low-pass fi lter frequency of 80 Hz (12dB/octave slope) 2. High-Pass Filter Frequency Select a high-pass fi lter frequency of 80 Hz (12dB/octave slope) 3. Low-Pass (Subwoofer) Output Level Set the subwoofer output level to “0” or its middle position. Page 26 | Gotham g213...
  • Page 27 Flip the “Polarity” switch to “0”. 8. “phase (deg.)” Knob Rotate the “phase” knob to “0” degrees 9. A.R.O. Defeat Switch Press the A.R.O. defeat switch so that the red light in the switch remains lit. | Gotham g213 Page 27...
  • Page 28 For each new position, start with the polarity and phase controls at “0” and repeat the setup process beginnng with Step 1. IMPORTANT! WRITE DOWN ALL SETTINGS PERFORMED IN STEPS 1-3 FOR IMPORTANT FUTURE REFERENCE. Page 28 | Gotham g213...
  • Page 29 CORRUPT THE CALIBRATION MEASUREMENTS. 4) Applying Automatic Room Optimization (A.R.O.) You are now ready to apply the power of JL Audio’s exclusive Automatic Room Optimization system. Th is system will measure the response of the subwoofer at your primary listening seat and apply a powerful equalizer to tame the primary room mode, resulting in smoother, more accurate bass performance.
  • Page 30 Feel free to experiment and listen to a variety of demanding material until you fi nd the best match for your room and your tastes. Your Gotham is now optimized for maximum bass performance at your listening seat. Congratulations! Page 30 | Gotham g213...

  • Page 31: Frequently Asked Questions

    / video components. If you are going to be away from home for several days, it is also a good idea to unplug your home theater components to prevent damage from unexpected storms or power line conditions. | Gotham g213 Page 31...

  • Page 32: Cleaning Your Gotham

    Gotham. Never use solvents or aggressive cleaning agents on your Gotham. When in doubt, test the cleaning product on the underside of the cabinet and let it sit for several days before committing to its use on visible portions of the cabinet. Page 32 | Gotham g213...

  • Page 33: Troubleshooting

    4. If your other speakers play, but the Gotham does not, try changing the cable that connects the Gotham to the system. 5. If the problem persists, call your dealer or JL Audio Technical Support for assistance. Th e bass level has changed.
  • Page 34 Page 34 | Gotham g213...

  • Page 35: Limited Warranty / Service Information

    JL Audio at JL AUDIO for service. Cosmetic damage due to accident or normal wear and tear the number listed on this page.

  • Page 36: Specifications

    “JL Audio®”, 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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