JBL LSR4312SP Owner's Manual
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JBL LSR4312SP Owner's Manual

Linear spatial reference powered subwoofer
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LSR4312SP
Linear Spatial Reference
Powered Subwoofer
Owner's Manual

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Summary of Contents for JBL LSR4312SP

  • Page 1 LSR4312SP Linear Spatial Reference Powered Subwoofer Owner’s Manual...

  • Page 3: Safety Instructions

    Important Safety Instructions 1. Read These Instructions - Before operating your new JBL product, please read safety and operating instructions. 2. Keep These Instructions - For future reference and troubleshooting purposes, retain these instructions. 3. Heed All Warnings - All warnings in this manual should be followed.
  • Page 4 Important Safety Instructions 13. Fire - No naked fl ame sources, such as lighted candles, should be placed on the surface, of the apparatus. Explanation of Graphic Symbols The exclamation point within an equilateral triangle is intended to alert the users to the presence of important operating and maintenance (ser- vicing) instructions in the literature accompanying the product.

  • Page 5: Table Of Contents

    Appendix A: About Surround Sound ..........34 The LFE Channel ..................34 +10 dB Gain ..................34 Bass Management ................34 Appendix B: Using Two LSR4312SP Subwoofers .....36 Appendix C: Using the LSR4312SP with Speakers Other Than the LSR4328P / LSR4326P ........39 Appendix D: System Block Diagram ..........40 Appendix E: Wiring Requirements ..........42...
  • Page 6 vi v...

  • Page 7: Introduction

    fi nd the information you need. The Features section on the next page provides a brief overview of the exceptional features of the LSR4312SP. It’s followed by a QuickStart section, which will get you up and running in a matter of minutes.
  • Page 8 See Appendix C on page 44 for a full description of how to use the LSR4312SP in a non-networked system of speakers other than the LSR4328P / LSR4326P.
  • Page 9 Additionally, the RMC process automatically trims all speaker levels and, in the LSR4312SP, even sets the correct polarity so as to compensate for variations in placement relative to the mix position, thus ensuring balanced mixes that are neither bass-heavy nor bass-light.
  • Page 10 Left and Right channels. In addition, dual high-resolution 96 kHz stereo AES/EBU and S/PDIF digital inputs are provided. This variety of inputs allows the LSR4312SP to be connected to a wide range of devices, including digital workstations, CD players, DVD players, and multichannel processors.

  • Page 11: Quick Start

    The box can then be slipped off. (This also works in reverse for repacking the units.) Be sure to not grasp the LSR4312SP from the front. A stray hand or fi nger can cause damage to the transducer.
  • Page 12 Quick Start Input Sensitivity switch Analog audio LFE channel input/output connectors +10dB LFE Gain switch Digital audio connectors Analog audio Bass Management input/output connectors CAT5 connectors USB connector DIP switches Active Input display AC connector Fuse LSR4312SP Rear Panel...
  • Page 13 6. Make all required audio connections by connecting your audio devices to the analog and/or digital inputs of the LSR4312SP fi rst, and then use its analog and/or digital outputs to distribute the signal to the main speakers. The LSR4312SP subwoofer is able to accommodate up to six channels of analog signal, and it also includes one stereo S/PDIF digital input and one stereo digital AES/EBU input.
  • Page 14 Center channel signal, on the same wire. Consult your documentation to determine which channel of the digital stream (A or B) carries the LFE signal and set the LSR4312SP to reproduce that channel by enabling either DIP switch #3 for Channel A or DIP switch #4 for Channel B.
  • Page 15 When using digital audio inputs, the setting of the third and fourth DIP switches determine which channel or channels of the stereo AES/EBU or S/PDIF signal will be reproduced by the LSR4312SP, and at least one of these switches must be in the ON (RIGHT) position. If both switches are placed in the OFF (left) position, all fi ve LEDs in the meter display will strobe and all buttons will blink, indicating an error condition.
  • Page 16 For more information about calibrating your system with RMC, see page 32 in this manual. 13. Finally, put on some good music to listen to and take a few moments to read the rest of this manual to acquaint yourself with all the features of your JBL LSR4312SP subwoofer. Enjoy!

  • Page 17: Reference

    Reference Front Panel LSR4312SP Front Panel The controls and displays on the front panel of the LSR4312SP allow you to adjust and view various subwoofer settings. Below is a listing and description of each. Control and Display: 1. Meter Display – In combination with front panel buttons, the meter is used to display the current setting and status of the following functions: •...
  • Page 18 “DIM” function is enabled by the remote control or LSR4300 Control Center Software. 3. Power – After connection to an AC power source, press this button to turn the LSR4312SP on. If networked together with other LSR4300 speakers, all speakers will turn on simultaneously. Press the button again to return the subwoofer (and all other networked speakers in the system) to a stand-by mode, where the internal amplifi...
  • Page 19 When a brand new LSR4312SP is fi rst powered on or if its factory settings have been restored (see page 32 in this manual), or when the bass managment crossover frequency selection is changed, the RMC button lights steadily to indicate that an RMC calibration needs to be performed.
  • Page 20 Bass Management / LFE DIP switch is set to “Bass Management.” If a second LSR4312SP is networked, changing the Bass Management X OVER frequency in either one will cause both to be set identically.
  • Page 21 Reference - Front Panel If a second LSR4312SP is networked, changing the LFE FILTER frequency in either one will cause both to be set identically. 9. Subwoofer LEVEL – Allows you to make fi ne adjustment of the subwoofer level, in 0.5 increments, to a maximum of +/- 7.5 dB.
  • Page 22 Reference - Front Panel If a second LSR4312SP is networked, changing the Subwoofer LEVEL in either one will cause both to be set identically. 10. INPUT (Input Select) – Allows you to listen to any of three connected signal sources: analog, S/PDIF digital, or AES/EBU digital.
  • Page 23 Reference - Front Panel Analog input S/PDIF input CH A S/PDIF input CH B S/PDIF input CH A + B AES/EBU input CH A AES/EBU input CH B...
  • Page 24 When monitoring digital (S/PDIF or AES/EBU) signal, the third and fourth rear panel DIP switches on the rear panel of the LSR4312SP must be set correctly in order to determine which channel is being reproduced, or whether both channels are being reproduced. If both switches are placed in the OFF (left) position, fi ve LEDs in the meter display will strobe and all front panel buttons will blink, indicating an error condition.

  • Page 25: Rear Panel

    Reference - Rear Panel Rear Panel LSR4312SP Rear Panel...
  • Page 26 12. USB connector – Universal Serial Bus Type I connector for computer connection when updating (“fl ashing”) the internal system software. The USB connector on th LSR4312SP is for fi rmware updates only. To control the subwoofer using LSR4300 Control Center Software, the subwoofer must be networked with one or more LSR4326P or LSR4328P speakers and Control Center Software must be connected to the “LEFT CHANNEL SPEAKER”.
  • Page 27 Subwoofer. If only one LSR4312SP subwoofer is being used, make sure that only the fi rst DIP switch (SUB1) is in the ON (right) position. If two LSR4312SP subwoofers are being used, one should be set to SUB1 and the other set to SUB2;...

  • Page 28: Remote Control

    DIP switches are also used to restore factory settings. See page 33 in this manual for more information. 14. ACTIVE INPUT display – Whenever the LSR4312SP is powered on, one of these LEDs will be lit, indicating whether the subwoofer is reproducing signal arriving at the analog input, or one of the two digital inputs (S/DIF and AES/EBU).
  • Page 29 The corresponding front panel LSR4312SP button will begin blinking and the meter display will update accordingly. To SOLO the LSR4312SP designated as “SUB 1” (DIP switch 1 set ON), press the SUB1 button in the “Solo” section of the remote.

  • Page 30: Subwoofer Placement And Polarity Setting

    “nondirectional”), subwoofer placement is not nearly as critical as main channel speaker positioning. The LSR4312SP is designed to be placed directly on the fl oor and not elevated or mounted in any way. The sixth (bottom-most) DIP switch on the rear panel of the LSR4312SP allows you to manually set the polarity of the subwoofer to either 0°...

  • Page 31: Ac Power Connections

    Reference - Subwoofer Placement AC Power Connections The LSR4312SP voltage is set at the factory for use with either 100V-125V (U.S.) or 200V-250V. The ground terminal of the IEC plug is required by wiring codes and regulations. It must always be connected to the electrical installation safety ground.
  • Page 32 Reference - Network Connections and DIP Switch Settings CAT5 cable CAT5 cable Network Network Terminator Terminator LEFT SPEAKER SUBWOOFER RIGHT SPEAKER Networking interconnections and DIP switch settings for stereo use with LSR4328P and LSR4326P studio monitors Network Terminator LEFT SPEAKER CENTER SPEAKER RIGHT SPEAKER Network...
  • Page 33 At least one LSR4300 monitor in a networked system must have its LEFT DIP switch set to ON. Making any of the following changes in the LSR4312SP from either the front panel, wireless remote control, or LSR4300 Control Center Software will cause the JBL logo in networked speakers to blink for approximately 3 seconds: •...

  • Page 34: Audio Connections

    Connect your analog audio source (mixing console, digital workstation, or other analog audio devices) to the LSR4312SP inputs fi rst, then use the LSR4312SP analog outputs to route the signal to the other speakers in your system. This approach allows the LSR4312SP to carry out optional bass management if desired.

  • Page 35: Protection Circuitry In The Lsr4312Sp

    If you want to disable bass management (that is, have the LSR4312SP reproduce the LFE channel only) when using the digital inputs, be sure to set the fi fth rear-panel DIP switch to the “LFE” (LEFT) position and connect the correct digital pair (typically the one carrying Center/LFE signal) to the AES/EBU or S/PDIF input, then use the third and fourth DIP switches to select the channel that is carrying the LFE signal (typically the right, “B”...
  • Page 36 Reference - Typical Audio Connections...
  • Page 37 Reference - Typical Audio Connections...

  • Page 38: Rmc™ Room Mode Correction

    RMC, return subwoofer to prior settings or perform a new RMC calibration. If you don’t plan on using bass management most of the time (i.e., if you plan on using the LSR4312SP solely to reproduce the LFE channel), make sure it is turned OFF before performing an RMC calibration. For more information, see Appendix A on page 34 in this manual.

  • Page 39: Restoring Factory Settings

    2. Set the Sub1 and Sub2 DIP switches to the ON position. 3. Re-connect the power cable, wait for the JBL logo to dim, then turn the LSR4312SP back on. All front panel controls will blink and the LED display will fl ash a left-right pattern to show that memory settings are being recalled.

  • Page 40: Appendix A: About Surround Sound

    The LFE low-pass fi lter in the LSR4312SP allows you to monitor the LFE channel as it will sound after it has been mastered, without fi ltering applied or fi ltered (at 50Hz, 80Hz, or 120Hz), allowing you to reproduce the fi nal product as it is intended.
  • Page 41 Ultimately, the decision as to whether to use bass management is dependent largely upon the application. There are times when you may need to use the LSR4312SP to monitor the LFE channel only, and other times when the LSR4312SP bass management system is preferred since it allows you to extend the low frequency response of your system and fi...

  • Page 42: Appendix B: Using Two Lsr4312Sp Subwoofers

    There are also advantages to adding a second LSR4312SP to a surround setup. In large rooms, the addition of a second subwoofer provides additional dynamic range and smooths in-room frequency response.
  • Page 43 Interconnections for adding a second LSR4312SP to a non bass-managed 5.1 setup Note: To use digital inputs in a 5.1 multichannel system, DIP switch #5 should be set to LFE. The LFE Filter should be set to NONE. Multi-Channel/Bass Management using the LSR4312SP digital inputs requires an external bass management processor.
  • Page 44 Appendix B: Using Two LSR4312SP Subwoofers...

  • Page 45: Appendix C: Using The Lsr4312Sp With Speakers Other Than The Lsr4328P / Lsr4326P

    LSR4312SP crossover frequency. If, for example, you select a cross over frequency of 80Hz in the LSR4312SP, the high-pass fi lter for the main speakers should also be set to 80Hz.

  • Page 46: Appendix D: System Block Diagram

    Appendix D: System Block Diagram...
  • Page 47 Appendix D: System Block Diagram...

  • Page 48: Appendix E: Wiring Requirements

    Under no circumstances should the safety ground wire be removed from the AC power connector. When using balanced sources with the LSR4312SP, either the XLR or T/R/S input connector can be used, since the circuit is common to both.
  • Page 49 Diagram D details the connections using single conductor shielded cable with a Tip/Ring/Sleeve or XLR plug for the LSR4312SP input. Single conductor cable should be used as a last resort as it provides the greatest likelihood of problems. The “HOT” (+) signal should be connected to the tip of the Tip/Ring/ Sleeve plug.
  • Page 50 Appendix E: Wiring Requirements Diagram E details the connections using unbalanced cable and Tip/Sleeve connections to the 1/4” or XLR input. Digital Audio Connections Always use high-quality cable designed for use with digital equipment. We recommend the use of 110 ohm balanced cabling for AES/EBU connections, with a maximum cable length of 100 meters (approximately 330 feet).

  • Page 51: Appendix F: Error Messages And Troubleshooting

    Appendix F: Error Messages and Troubleshooting Under certain circumstances, the meter display on the LSR4312SP will indicate an “error message.” Following is a list of conditions that cause an error message to be displayed, and the corrective action required to cancel the error message.
  • Page 52 LSR4328P / 4326P (the speaker with LEFT DIP switch time. Front Left speaker. in the ON position). (Remote will not work with LSR4312SP alone.) My subwoofer will not Subwoofer is not connected Confi rm your subwoofer is connected to an active power up. There are no to power source.

  • Page 53: Appendix G: Important Information About Lsr4300 Firmware

    It is not necessary to update the fi rmware in any speaker unless you plan to use it with the LSR4312SP Subwoofer and it has an incompatible fi rmware version. If an incorrect fi rmware type has been loaded, ie: if a subwoofer has been fl...

  • Page 54: Specifi Cations

    450 watts (<1% THD into rated impedance) THD + N, ½ Power: <0.08% AC Input Voltage: 120 VAC, 60 Hz Model LSR4312SP; 230VAC, 50 Hz Model LSR4312SP/230 AC Input Voltage Operating Range +/- 10% AC Input Connector: Self-Generated Noise Level: <10 dBA / 1 m tonal artifact-free noise fl...
  • Page 55 For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design...

  • Page 56: Warranty Statement

    Department), 8500 Balboa Boulevard, PO. Box 2200, Northridge, California 91329 (800/852-5776). We may direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair. Either way, you’ll need to present the original bill of sale to establish the date of purchase.
  • Page 57 PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY. EXCLUSION OF CERTAIN DAMAGES JBL’S LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY DEFECTIVE PRODUCT AND SHALL NOT INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND.

  • Page 58: Jbl Professional Contact Information

    Product Registration: Register your product online at www.jblpro.com/registration Outside the USA: Contact the JBL Professional Distributor in your area. A complete list of JBL Professional international distributors is provided at our U.S.A.website - www.jblpro.com En Dehors des Etats-Unis: Contacter votre Distributeur JBL Professional. Une liste complète de nos distributeurs internationaux est disponible sur le site web - www.jblpro.com...
  • Page 59 Notes...
  • Page 60 Notes...
  • Page 61 Part Number: 363032-002 09/06...

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