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        LSR2300 Series Studio Monitors Owners Manual
         Contents
1.          LEFT SURROUND RIGHT SURROUND  SPEAKER SPEAKER    15    Section 8  Appendix A       16    Mounting Specifications for LSR2328P and LSR2325P   Mounting points are provided for use with industry standard mounting brackets  Mounting points are located on  the bottom of the LSR2328P and LSR2325P models    Fastener specifications    Type  M6 metric thread   Length  1 5 inch  38 1 mm  plus the thickness of the mounting plate     Hole Pattern     1 4 Inch    107 9 mm   4 25 in     50 8 mm   2 in           p       Caution  Unsafe mounting or overhead suspension of any heavy load can result in serious injury and equipment  damage  Mounting of speakers should be done by qualified persons in accordance with all applicable local safety  and construction standards  Be certain to follow the instructions provided by the manufacturer of the mounting  bracket  be certain that it is capable of supporting the weight of the speaker to be mounted     Section 9  Appendix B  Trouble Shooting    If there is no sound from your speakers  check these settings      Make sure a signal source is connected and producing sound      Make sure the blue power ON LED is illuminated on the front of the speaker      Make sure the volume control is not set to the full counter clockwise position      Confirm the power cable is connected and the power switch is set to the ON position      If the blue LED on the front of the speaker does not illuminate  examine the fuse for possible failure of the fuse   Turn
2.  D   Northridge  CA 91329    Do not return product to this address without first obtaining prior authorization from JBL     Customer Service    Monday through Friday   8 00am   5 00pm   Pacific Coast Time in the U S A    800  8JBLPRO  800 852 5776   www jblproservice com    Product Registration   Register your product online at www jblpro com registration    On The World Wide Web     www jblpro com    Professional Contacts  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 compl  te de nos distributeurs internationaux est disponible  sur le site web   www jblpro com    International   Wenden Sie sich an            rtliche JBL Professional Vertretung  Eine vollst  ndige Liste der internationalen JBL   Vertretungen finden Sie auf unserer Website unter www jblpro com    Fuera de los Estados Unidos   Comun  guese con el distribuidor de JBL Professional de su zona  En nuestro sitio web  www jblpro com  encontrar    una lista completa de los distribuidores de JBL International     Section 11  Warranty Information    The JBL Limited Warranty on professional loudspeaker products  except for enclosures  remains in effect for  five years from the date of the first consumer purchase  JBL amplifiers are warranted for three years from the date of original  purchase  En
3.  Type   Diaphragm Type     Other Features     Impedance    Amplifier   Low Frequency   Topology     Sine Wave Power Rating     THD          Power   High Frequency   Topology     Sine Wave Power Rating     18    LSR2328P  37 Hz   20 kHz    2 0 kHz 4th order acoustic Linkwitz   Riley    2104 dB SPL   gt 110dB SPL     gt 117dB  gt 123dB SPL 1m    Balanced XLR  1 4  tip ring sleeve  and unbalanced RCA  Positive voltage  applied to XLR pin 2   1 4  tip  RCA pin  produces outward woofer motion    92 dB SPL 1m    92 dB SPL 1m   115  230 VAC  50 60 Hz       15    IEC with User Replaceable Fuse    4 amp Time Lag 250V  2 amp Time  Lag 250V    40 watts  IEC265 5      infinity dB   0 dB   2 5 dB  0 dB   2 5 dB   2 0 dB  0 dB   3 0 dB    238G   203 mm  8 in    38 mm  1 5 in    Magnetically Shielded Ferrite    Tempered Paper with Butyl Rubber  Compliance    4 ohms   231H   25 mm  1 in  diaphragm  Neodymium   Silk Substrate with Epoxy    EOS Elliptical Oblate Spheroidal  waveguide with Elliptical Aperture    8 ohms    Class A B  monolithic    95 watts   lt 0 1  THD into rated  impedance      lt 0 03     Class A B  monolithic    70 watts   lt 0 1  THD into rated  impedance     LSR2325P  43 Hz   20 kHz  1 7 kHz 4th order acoustic Linkwitz Riley     gt 101 dB SPL    gt 107dB SPL     gt 112dB  gt 118dB SPL 1m    Balanced XLR  1 4  tip ring sleeve and  unbalanced RCA  Positive voltage applied  to XLR pin 2 1 4  tip  RCA pin produces  outward woofer motion    92dBSPL 1m    92dBSPL 1m   115   230 
4.  sources directly to the Left and  Right Inputs of the LSR2310SP Subwoofer  Then connect the Left and Right Outputs of the Subwoofer to the Left  and Right main speakers     Using the LSR2310SP in a Surround Sound System   If theLSR2310SP Subwoofer is being used to reproduce  the  1 LFE channel in a surround sound system  connect the  1 LFE signal to either the Left or Right input of the  subwoofer     Connect Professional  4dBu and  10 dBV signal sources to either the XLR      74  input connectors  Connect  consumer  10dBv level equipment to the RCA input connectors  Connect only a single signal source to the Left  Input and a single signal source to the Right Input of the subwoofer using either XLR input connectors  OR     input connectors OR the RCA input connectors  Do not connect multiple signal sources to either the Left inputs of  the subwoofer or multiple input sources to the Right inputs simultaneously     12    Setting the Subwoofer Level    When the LSR2310SP Subwoofer is used in a system with LSR2328P or LSR2325 speakers  the ideal balance  is achieved when the position of the volume control on the subwoofer is set to the same position as the volume  control on the main speakers  However  if more or less subwoofer volume is desired  you may use the volume  control on the subwoofer to achieve the balance that works best for your application and taste     Placement and Polarity Setting    Because the human ear cannot easily recognize where low frequencies are origin
5.  the Power Switch to the OFF position  Remove the power cord and remove the fuse holder as illustrated   Examine the fuse  If the fuse has a discontinuity in the internal wire or the fuse glass has dark spots as evidence  the fuse has failed  install a new fuse using the spare included in the fuse holder  Replace the fuse holder and try    to re power the system  If the system does not re power  please contact JBL Professional Customer Service       When using the LSR2310SP Subwoofer  If the system sounds as if it lacks low frequency confirm the subwoofer  is powered ON and the volume control is not set to full counter clockwise setting     If the above measures do not correct the problem  please contact JBL Professional Customer Service     17    Section 9  Appendix B    Specifications    Frequency Range     Low High Frequency Crossover     Maximum Continuous SPL each   Per Pair     1    Maximum Peak SPL Each  Per Pair   1m    Input Connectors     Calibrated Input Sensitivity  XLR  amp  1 4     10dBV    RCA Input   22dBV   Output  Connectors    AC Input Voltage    AC Input Voltage Operating Range  AC Input Connector     Replaceable Fuse Type  120 Volt   240  Volt     Long Term Maximum System Power     Controls     Volume Range  High Frequency Control  7 kHz Shelving    Low Frequency Control  120 Hz Shelving      Crossover Frequency    Transducers   Low Frequency Model   Diameter   Voice Coil   Magnet Type   Cone Type     Impedance    High Frequency Model   Diameter    Magnet
6.  the enclosure     on      Low Frequency Port     Works in conjunction with the low frequency transducer  to provide accurate low freguency performance and air flow to cool the internal electronics             Input Panel   Includes input connectors  power connector and user controls     10    Input Panel  7  XLR Left and Right Inputs    8  74  Left and Right Inputs  9  RCA Left and Right Inputs  10  XLR Left and Right Outputs    11  Crossover Frequency Selector     Allows selection of the crossover frequency  80Hz  120Hz or using the  External setting enables use of an outboard bass management crossover     12  Polarity Switch     Enables optional 180 degree reversal of the subwoofer output to optimize the blend of  the subwoofer with the main speakers     13  Volume Control     Controls the subwoofer level to balance the subwoofer with the system   14  Power Connector  15  Fuse Holder     Includes a user replaceable fuse and a spare fuse     16  Voltage Selector     sets the operating voltage for compatibility with the voltage supply in the  country of use     17  Power Switch     Activates power for the subwoofer    10      1               HON    Max             Un       neki d                                                  8                                S R  eum 2 3 O O  120 V  230 V  50 60 Hz 200 W  k N s See Owners Manual for Set up and Safety Precautions     t    17    Audio Connections    Two Channel Stereo Systems  Connect the Left and Right outputs of the signal
7. 1 LFE Channel    ceci eere reni eon 12  Systems Connections   Stereo and Surround Sound                                                13  Appendix A   Mounting of LSR2328P and LSR2325P                  sss 16  Appendix B     Trouble Shooting    17    53 0  101  fer LIS   nL RH IEEE 18  JBL Service Contact Information    20    Product Warranty Information                          21    Section 2  Introduction    Congratulations on your purchase of LSR2300 Series Studio Monitors  The LSR2300 Series Studio Monitors meet  JBL   s high standards for accuracy and long term reliability in demanding professional applications  All LSR2300  models incorporate JBL professional transducer and network technologies to provide accurate frequency response   exceptional low frequency extension and high SPL capability  JBL LSR Linear Spatial Reference design ensures  greater accuracy at the mix position in a broad range of production rooms  Additionally  each speaker is equipped  to integrate into professional production systems and work environments     JBL LSR Linear Spatial Reference Design    Because listening environments vary  JBL designed the LSR2300 system using LSR Linear Spatial Reference  design criteria that improves accuracy at the listening position in a broad range of rooms  The key to accuracy is  ensuring not just the on axis sound  but also the reflected sound reaching the mix position is neutral  While most  manufacturers take only a single on axis measurement of the speake
8. JBL MSC1 Monitor System Controller is available at  the JBL Professional Website    To get the most out of your JBL LSR2300 system  please review this owner s manual and keep it on hand for  future reference  Also  please register your new speakers at www jblpro com registration      Section 3  Setting Up Your System  Unpacking    When removing the systems from their packaging  it is important not to grasp the units from the front  Because the  high frequency device is located near the top of the cabinet on the front baffle  a stray hand or finger can cause  damage  The best way to safely unpack your monitors is to open the top of the box  keep the foam end cap piece on   and roll the box upside down  The box can then be slipped off  This also works in reverse for repacking the units     Placement    The LSR2328P and LSR2325P models are designed to be positioned vertically to allow the woofer and the tweeter to  be in vertical alignment  This orientation eliminates phase shift that occurs when the distance of the woofer to the ear  is different from the distance of the tweeter to the ear  Also  the tweeter waveguide is designed to provide optimum  dispersion when the system is vertically oriented  Placing the system horizontally will defeat the LSR Linear Spatial  Reference principles and cause destructive reflection off the work surface  The loudspeakers should be angled so the  center of the high frequency transducer in each speaker is aimed directly towards the ear of the 
9. LSR2300 Series Studio Monitors  Owners Manual       PROFESSIONAL                         LSR2325P LSR2328P LSR2310SP  5  Two Way Bi Amplified 8  Two Way Bi Amplified 10  Powered Studio  Studio Monitor Studio Monitor Subwoofer    Section 1  Important Safety Instructions    1  Read these instructions      Keep these instructions      Heed all warnings      Follow all instructions      Do not use this apparatus near water     Clean only with dry cloth       Do not block any ventilation openings  Install in accordance with the manufacturer   s instructions     c NO Oo    O N      Do not install near any heat sources such as radiators  heat registers  stoves  or other apparatus  including  amplifiers  that produce heat     9  Do not defeat the safety purpose of the polarized or grounding type plug  A polarized plug has two blades with  one wider than the other  A grounding type plug has two blades and a third grounding prong  The wide blade or  the third prong is provided for your safety  If the provided plug does not fit into your outlet  consult an electrician  for replacement of the obsolete outlet     10  Protect the power cord from being walked on or pinched  particularly at plugs  convenience receptacles  and  the point where they exit from the apparatus     11  Only use attachments accessories specified by the manufacturer     12  Use only with the cart  stand  tripod  bracket  or table specified by the manufacturer  or sold with  the apparatus  When a cart is used  use cau
10. ONS  AND EXCLUSIONS MAY NOT APPLY TO YOU  THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS  AND  YOU MAY ALSO HAVE OTHER RIGHTS  WHICH VARY  FROM STATE TO STATE     JBL Professional  8500 Balboa Boulevard  Northridge  CA 91329 USA    H Harman International    01 2009 Visit us online at www jblpro com    21                 PROFESSIONAL    Part Number  365438 001  Rev 0709    
11. VAC  50 60 Hz       15    IEC with User Replaceable Fuse    4 amp Time Lag 250V  2 amp Time Lag  250V    21 watts  IEC265 5      infinity dB   0 dB   2 5 dB  0 dB   2 5 dB   2 0 dB  0 dB   3 0 dB    235G   132 mm  5 2 in    25 mm  1 0 in    Magnetically Shielded Ferrite    Tempered Paper with Butyl Rubber  Compliance    4 ohms   231H   25 mm  1 in  diaphragm  Neodymium   Silk Substrate with Epoxy    EOS Elliptical Oblate Spheroidal  waveguide with Elliptical Aperture    8 ohms    Class A B  monolithic    55 watts    0 196 THD into rated  impedance       0 0196    Class A B  monolithic    35 watts    0 196 THD into rated  impedance     LSR2310SP  28 Hz   2 kHz    2104 dB SPL  35Hz 80Hz     113 dB    L amp R  Balanced XLR  2   1 4  tip ring sleeve   2  and unbalanced RCA  2   Positive voltage  applied to XLR pin 2   1 4  tip  RCA pin  produces outward woofer motion    92 dB SPL   1     80 Hz BM     92 dB SPL   1 m  80 Hz        L amp R  Balanced XLR  2    115  230 VAC  50 60 Hz       15    IEC with User Replaceable Fuse    5 amp Time Lag 250V  2 5 amp Time Lag  250V    90 watts  IEC265 5      infinity dB   0 dB    80 Hz  120 Hz  External    230H   254 mm  10 in    51 mm  2 0 in    Magnetically Shielded Ferrite    Tempered Paper with Butyl Rubber  Compliance    8 ohms    Bridged Class A B  monolithic    180 watts    0 196 THD into rated  impedance       0 0596    Section 9  Appendix B    Specifications  Continued     THD           Power     Physical     Finish     Mounting     E
12. amation point within an equilateral triangle is intended to alert the  user to the presence of important operating and  maintenance Servicing instructions in the literature   ZA  N accompanying the product     AVIS  RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR  DOUBLE INSULATION   WHEN SERVICING USE ONLY IDENTICAL PARTS        Important Safety Instructions                        enn E 3                19 0 e                           5  Setting Up  Your System    ii                      ea 6                         ai eh de    ydd 6  PIAGSIMGMM dE 6  Audio                                                          7                                      E 7  Making SOUNG                                        7    LSR2328P  LSR2325P Bi amplified Studio Monitors    Front and  Rear VIEWS ne dac            deus               deve dt vence een Dd        GO ja 8  Input            a eni e ege ebat er    ath FALL wad a AE a Ore Rede ERE 9  Audio Connections                                  nnn nan mra                                     9    LSR2310SP Powered Studio Subwoofer    Frontand Rear VIEW  c                         a  10                                    FNAN FER      TF HWN 11  Audio                                   m 11  Setting Subwoofer Level                                          12  Placement and                                             12  Crossover Settings and Bass                                                                               12  Surround Sound and  
13. ange monitor  For  that reason  you may want to use an LSR2310SP subwoofer to reproduce all the bass frequencies in your system   If you are using an LSR2310SP Subwoofer in your system  bass management is accomplished simply by routing  your Left and Right mix channels to the Subwoofer inputs and then from the subwoofer outputs to the Left and  Right speakers  The frequency at which the Subwoofer divides signals to the sub and the left and right speakers  can be set using the Crossover Frequency selector switch on the input panel of the LSR2310SP Subwoofer   Normally this should be set to 80Hz  Two additional settings are provided     120Hz  Many home theater and music playback systems include small speakers that are unable to reproduce low  frequencies without the help of a subwoofer  In these systems  the receiver engages electronic bass management  to direct low frequency content in the main channels to the subwoofer  The LSR2310SP Subwoofer includes a  120 Hz crossover setting to simulate the sound a listener might hear at home  using a system with small speakers  and a subwoofer     External  Select this setting when connecting the subwoofer to the JBL MSC1 Monitor System Controller or an  external bass management system  When external is selected  XLR left and right outputs are disabled     Surround Sound Systems and LFE    The LSR2310SP Subwoofer can be used to reproduce the LFE  Low Frequency Effects  or  1 channel in a  surround sound system  In film production appli
14. arranty     How To Obtain Warranty Performance    If your JBL product ever needs service  write or telephone us at JBL Incorporated  Attn  Customer Service  Department   8500 Balboa Boulevard  PO  Box 2200  Northridge  California 91329  818 893 8411   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  Please do not ship your JBL product to the factory  without prior authorization  If transportation of your JBL product presents any unusual difficulties  please advise us  and we may make special arrangements with you  Otherwise  you are responsible for transporting your product for  repair or arranging for its transportation and for payment of any initial shipping charges  However  we will pay the return  shipping charges if repairs are covered by the warranty     Limitation of Implied Warranties    ALLIMPLIED WARRANTIES  INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 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  SOME  STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND OR DO NOT  ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES  SO THE ABOVE LIMITATI
15. ating from  they are said to          non directional      subwoofer placement is not nearly as critical as main channel speaker positioning  The  LSR2310SP is designed to be placed directly on the floor and not elevated or mounted in any way  Set this  Switch to the setting that yields a stronger perceived bass response at the mix position    The subwoofer should optimally be placed somewhere between the two main speakers  Precise central  placement is not necessary  Centered positioning in the room can sometimes cause unwanted cancellation  so  itis recommended that the subwoofer be placed slightly off center and not at the midpoint between the left and  right walls     Ideally  the subwoofer should be placed somewhere near  or behind  the front Center channel speaker     Crossover Settings and    Bass Management      Bass management    is a term that refers to the practice of using a subwoofer to reproduce the bass frequencies  of the main channels  Because of the physiology of the human ear  low frequencies are largely non directional   Given an adequate listening distance  we can t easily tell where bass signals are coming from  Thus  it makes little  or no difference to the listening experience whether the bass component in a sound comes from the originating  speaker  which may be off to your left or right  or even behind you  or from a dedicated subwoofer which is better  equipped     and better positioned in the room     to reproduce low frequencies than even a full r
16. cations  the LFE channel contains low frequency effects  such  as the sounds of explosions  and other sounds with strong low frequency components  In music applications  the  LFE channel usually contains low frequency instruments such as bass  bass drum  and synthesizer elements     Section 6  System Connections    Two Channel Systems    LEFT CHANNEL  SPEAKER                         RIGHT CHANNEL  SPEAKER       SUBWOOFER                                                                        O  OOcoO  Oo o      cl  gU  Ss   Ey         Nm        VENUE Um   EH un  um         Lj 01         LSR  E s 0 2300  LEFT OUT RIGHT OUT       oo             13    Section 6  System Connections    Two Channel Systems with MSC1 Monitor System Controller    LEFT CHANNEL RIGHT CHANNEL  SPEAKER SPEAKER          SUBWOOFER                                                                   Z   Z Z L   k ue  9 9 9 66                   879     ae FE  H   2 HEADPHONES  cone Ra  MP3 PLAYER  COMPUTER AUDIO gu  SYSTEM    14    Section 6  System Connections    Surround Sound Systems    LEFT CHANNEL CENTER RIGHT CHANNEL  SPEAKER SPEAKER SPEAKER  o                                                                                                                                                                    5                                 4    COMPUTER AUDIO  INTERFACE                      COMPUTER AUDIO SYSTEM          05 SU  E LSR                                                                            
17. closures and all other JBL products are warranted for two years from the date of original purchase     Who Is Protected By This Warranty     Your JBL Warranty protects the original owner and all subsequent owners so long as  A   Your JBL product has  been purchased in the Continental United States  Hawaii or Alaska   This Warranty does not apply to JBL products  purchased elsewhere except for purchases by military outlets  Other purchasers should contact the local JBL distributor  for warranty information    and B   The original dated bill of sale is presented whenever warranty service is required     What Does The JBL Warranty Cover     Except as specified below  your JBL Warranty covers all defects in material and workmanship  The following  are not covered  Damage caused by accident  misuse  abuse  product modification or neglect  damage occurring  during shipment  damage resulting from failure to follow instructions contained in your Instruction Manual   damage resulting from the performance of repairs by someone not authorized by JBL  claims based upon any  misrepresentations by the seller  any JBL product on which the serial number has been defaced  modified or removed     Who Pays For What     JBL will pay all labor and material expenses for all repairs covered by this warranty  Please be sure to save the original  shipping cartons because a charge will be made if replacement cartons are requested  Payment of shipping charges  is discussed in the next section of this w
18. e     17  Power Switch     Activates power for the system     LF Trim    2208          od  2 5dB OdB 42 5 dB Volume           1 3        m m          12 LF Trim Pd sma Trim 11  HF Trim   2 5dB              9  OdB        8                                                                       Balanced Input   Unbalanced Input     Unbalanced Input    16  15            14        115  Dn    Voltage       120 V  230 V  50  60 Hz 150 W LSR2325P    Linear Spatial Reference  Bi Amplified Monitor    Audio Connections    Connect Professional  4dBu and  10 dBV signal sources to either the XLR or 74  input connectors  Connect  consumer  10dBV level equipment to the RCA input connectors  Connect only a single signal source to the speaker  using either XLR input connector  OR the 74  TRS input connector OR the RCA input connector  Do not connect  multiple signal sources to multiple inputs of the same speaker simultaneously     Section 5  LSR2310SP Powered Studio Subwoofer    Front View Back View                                                                   Features  1  Low Frequency Transducer    Woofer        Reproduces low frequency signals     2  Protective Grille     Protects the woofer when the subwoofer is placed in a location where the woofer  could be damaged by feet or objects     3  Power Indicator   llluminates when power is connected and the Power Switch is set to ON     4  Feet     Elevates the Subwoofer to prevent acoustic coupling with the floor and prevent scratching  of
19. er can be adjusted to produce best bass response in the room     2 Channel System with 5 1 Surround Sound  Subwoofer System  Subwoofer  Subwoofer Center             Left  Surround Right       Audio Connections    The LSR2300 Series Speakers are equipped with balanced XLR and 1 4  TRS connectors and unbalanced  RCA connectors for connection of professional computer audio interfaces  mixing consoles and audio production  equipment as well as unbalanced consumer audio products including personal music players  consumer audio  receivers and audio visual equipment     Connect professional equipment with balanced outputs to the XLR or 74  TRS input of the speaker using balanced  signal cables   More information is available www jblpro com Isr click on support      Connect consumer equipment with unbalanced outputs to the RCA input of the speaker     The volume control on the rear of the speaker should be set to achieve the comfortable listening level when the  signal source is playing at it   s loudest volume  Positive voltage to Pin 2 of the XLR connector  the tip of the 1 4   TRS jack  and the RCA jack will produce a forward motion in the low frequency cone     Power Connections    The LSR2300 Models include a rear panel voltage selector switch that is set at the factory for the appropriate  voltage  Before connecting the power cable it is a good idea to check the position of this switch to confirm the  voltage switch is correctly set for the country of use  The power connector o
20. listener  Ideally  the  LSR2328P and LSR2325P speakers should be placed on suitable speaker stands  rather than on the work surface  and  positioned away from walls and boundaries  The distance and position of the subwoofer can be adjusted to produce  best bass response in the room  Low frequency performance in the room can benefit by placing the subwoofer close to  a wall or in a corner that may be further away from the mix position than the other speakers  When properly placed  you  should not be able to localize the bass produced by the subwoofer  That is  your ear should believe the bass is coming  from the Left and Right speakers     In two channel production applications  the common listening distance is generally 1 to 1 5 meters  3 to 5 feet  from  the left and right speakers  The speakers should be placed so the position of the listener and the two speakers form  an equilateral triangle  In 5 1 Surround Sound production  the listening distance for all speakers from any speaker is  typically 5  to 8   The placement of the Left and Right speakers should form an equilateral triangle with the mix position   The Center speaker should be placed half way between the left and right speakers at exactly the same distance from  the mix position  The Left Surround and Right Surround speakers should be placed the same distance as the Left   Center and Right speakers  and positioned 110 degrees to 150 degrees relative to the center speaker  The distance  and position of the subwoof
21. n the speaker includes a user   replicable protective fuse  The ground terminal of the IEC plug is required by wiring codes and regulations and  must always be connected to the electrical installation safety ground  The LSR2300 Series units have carefully  designed internal grounding and balanced inputs and outputs to reduce the possibility of ground loops that  produce hum  If hum occurs  see Appendix A for suggested audio signal wiring  system grounding hints and  other preventive measures     Making Sound    After connections are made  reduce the output level of the audio source  mixing console  computer recording  system  or preamp  to minimum  Turn on the powered speakers  When the Blue LED on the front of each speaker  illuminates  the speakers are ready to reproduce audio signals  Power up all audio equipment  Slowly advance the  volume control of connected audio equipment to achieve a suitable listening level  and enjoy     Section 4  LSR2328P and LSR2325P Bi amplified Studio Monitors       Front View Back View                                                                                                             4 5   4      6  Features    1  High Frequency Transducer    Tweeter        Reproduces high frequency signals     2  EOS Elliptical Oblate Spheroidal Wave Guide with Elliptical Tweeter Aperture   Ensures the combination  of direct and reflected sound arriving at the mix position is neutral and accurate  The Elliptical Aperture  opening in the wave guide ar
22. nclosure Volume  net      Low Frequency Vent     Baffle Construction   Enclosure Construction   Net Weight     Dimensions  W x H x D       lt 0 07     Baffle  Metallic Anthracite Paint  Enclosure  Matte Black PVC    4 threaded mounting points conforming  to Industry standard pattern  107 9 x    50 8 mm  4 25 x 2 00 in  center to center     M6 metric threads   13 liter  0 46 cu  ft      Rear ported     integrated with amplifier heat sink     Injection molded structural ABS  18 mm  3 4 in  MDF  12 7 kg  28 Ib     397 mm x 254 mm x 335 mm   15 6 in x 10 in x 13 2 in      lt 0 05     Baffle  Metallic Anthracite Paint  Enclosure  Matte Black PVC    4 threaded mounting points conforming to  Industry standard pattern  107 9 x 50 8 mm   4 25 x 2 00 in  center to center    M6 metric threads     7 1 liter  0 25 cu  ft      Rear ported     integrated with amplifier heat sink     Injection molded structural ABS  15 mm  5 8 in  MDF  7 7 kg  16 Ib     303 mm x 187 mm x 258 mm   11 9 in x 7 4 in x 10 in     Baffle  Metallic Anthracite Paint  Enclosure  Matte Black PVC    34 liter  1 2 cu  ft      Rear ported     integrated with amplifier heat sink     Injection molded structural ABS  18 mm  3 4 in  MDF  20 7 kg  45 5 Ib     414 mm x 381 mm x 460 mm   16 3 in x 15 in x 18 1 in     19    20       Section 10  Contact Information    JBL    PROFESSIONAL    Mailing Address   JBL Professional  8500 Balboa Blvd   Northridge  CA 91329    Shipping Address    JBL Professional   8370 Balboa Blvd   Dock
23. o achieve smooth mid and  high frequency response for a targeted listening window of x30  horizontally and x15  vertically  This  provides greater accuracy at the mix position where the blend of on axis and reflected off axis sound is  critical  The Elliptical High Frequency Aperture around the tweeter optimizes high frequency coverage for  smoother in room response above 9 kHz     The LSR2300 series models include balanced XLR  1 4  and unbalanced RCA connectors  and a variable  level attenuator to allow interface to a broad range of signal sources      High Frequency and Low Frequency Trim controls in the LSR2328P and LSR2325P allow adjustment  of frequency response to preference  or to compensate for acoustically reflective or absorptive listening  environments      LSR2328P and LSR2325P have integrated mounting points and reinforced enclosures to allow safe wall  mounting using readily available  industry standard mounting brackets      The LSR2310SP Subwoofer incorporates a professional bass management system with selectable  cross over settings to optimize low frequency performance in a range of production environments      When added to your LSR2300 System  the optional JBL MSC1 Monitor System Controller provides control  of your system and JBL RMC    Room Mode Correction   JBL   s ingenious technology that measures  and automatically compensates for the effect of low frequency room modes at the mix position that have  plagued mix engineers  More information about the 
24. ound the tweeter optimizes high frequency performance above 9 kHz     o    Low Frequency Transducer    Woofer        Reproduces low frequency content of the input signal   4  Power Indicator     llluminates when power is connected and the Power Switch is set to ON     5  Low Frequency Port     Works in conjunction with the low frequency transducer to provide accurate low  frequency performance and air flow to cool the internal electronics     6  Input Panel     Includes input connectors  power connector and user controls     7 Isolation Pad     The speaker is equipped with a foam pad on the bottom surface to provide acoustic  isolation from the supporting surface and increase stability when the speaker is placed on a speaker  stand or console top     Input Panel    8  XLR Input     Connect professional equipment using an XLR connector    9  74  Input   Connect equipment using    74  balanced or unbalanced connector    10  RCA Input     Connect consumer equipment using an RCA input    11  Volume Control     Use this control to set the maximum listening level    12  High Frequency Trim     Allows boost or cut of High Frequency output by     2 5dB    13  Low Frequency Trim     Allows a 2 dB boost of low frequency output by or 3 dB attenuation of  low frequency output     14  Power Connector      15  Fuse Holder     Includes a user replaceable fuse and a spare fuse   16  Voltage Selector     sets the operating voltage for compatibility with the voltage supply in the country of us
25. r   s performance  Linear Spatial Reference  design criteria requires 72 measurements  360 degrees around the speaker  yielding more than 1 200 times more  data  This data is used in the design of critical system components  enabling JBL to engineer complete systems  that deliver smooth off axis response  The result  clear accurate sound at the listening position in any room     The LSR2300 Series includes a range of features to meet the needs of demanding audio production applications       LSR2300 low frequency magnetically shielded transducers are equipped with 1 5   LSR2328P and  LSR2325P  and 2 0   LSR2310SP  voice coils with robust motor structures to provide excellent low  frequency performance  By reducing thermal related effects  the LSR2300 Studio Monitors sound the  same at low  medium and high levels  The woofers are magnetically shielded to prevent interference with  magnetically sensitive displays and equipment      All models are internally amplified with high output Class A B monolithic power amplifiers to provide high  SPL  Sound Pressure Level  for demanding production applications      The soft dome magnetically shielded High Frequency Transducer in the LSR2325P and LSR2328P  incorporates optimally damped materials to improve transient response and minimize distortion  By  reducing distortion in the lower operating range  where the ear is most sensitive  ear fatigue is reduced      A JBL Elliptical Oblate Spheroidal  EOS  Waveguide is precisely engineered t
26. tion when moving the cart apparatus combination  to avoid injury from tip over     13  Unplug this apparatus during lightning storms or when unused for long periods of time     14  Refer all servicing to qualified service personnel  Servicing is required when the apparatus has been damaged  in any way  such as power supply cord or plug is damaged  liquid has been spilled or objects have fallen into the  apparatus  the apparatus has been exposed to rain or moisture  does not operate normally  or has been dropped     15  The appliance coupler of the power supply cord is used as the ultimate disconnect device from the mains  The  appliance coupler shall remain readily operable     16 The apparatus shall be connected to mains socket outlet with a protective earthing connection     Warning     To reduce the risk of fire or electrical shock  do not expose the apparatus to rain or moisture     The apparatus shall not be exposed to dripping or splashing and no objects filled with liquids  such as vases   shall be placed on the apparatus  As with any electronic product  use care not to spill liquids into any part of  the system  Liquids can cause a failure and or a fire hazard     Watch For These Symbols    The lightning flash with arrowhead symbol within an equilateral triangle  is intended to alert the user to the presence  of uninsulated  Dangerous Voltage  within the products enclosure that may be of sufficient magnitude to constitute  a risk of electric shock to persons  The excl
    
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