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LSR6300 Studio Monitors

Owner’s Manual

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Summary of Contents for LSR6300 Series

Page 1: ...LSR6300 Studio Monitors Owner s Manual ...

Page 2: ...er cord sup plied with your powered product has a plug with 2 blades plus a 3rd grounding prong Do not cut off or damage the grounding prong If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet All powered products are fitted with a detachable power cord supplied which connects to the chassis AC connector The power cord has an IEC female ...

Page 3: ...em 10 11 Audio Connections 10 High Frequency Adjustment 10 Changing Mid High Orientation 11 LSR6312SP Powered Studio Subwoofer System 12 15 Audio Connections 12 AC Power Connections 13 14 Audio Level Adjustment 14 Low Frequency Adjustment 14 LED Indication 14 RMC Equalization 14 System Configuration 15 Appendix 16 18 A Wiring Requirements 16 17 B Mounting Specifications 18 C RMC Room Mode Correcti...

Page 4: ... are provided for use with readily available industry standard mounting brackets THX pm3 All LSR6300 models are THX pm3 approved for use in the most demanding production applications and environments JBL Transducer Technologies Differential Drive New voice coils and motor assemblies have two separate drive coils with twice the thermal surface area of traditional speakers This enables LSR6300 syste...

Page 5: ...or near field applications For mid field applications 2 to 3 meters is more likely The stereo listening angle is largely a matter of personal preference and we suggest the angle of the loudspeakers should be between 35 and 50 degrees as shown in Figure A Vertical vs Horizontal Placement The LSR6328P model is designed to be positioned vertically This orientation eliminates the phase shifts that occ...

Page 6: ...utomatically adjust for operation from 100 to 240 VAC with no intervention by the user 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 The LSR6300 Series units have carefully designed internal grounding and balanced inputs and outputs to reduce the possibility of ground loops hum If hum occurs ...

Page 7: ...ial response required in today s working environments The magnetically sheilding of the HF transducer reduces interference when used in close proximity to CRT video and computer monitors This custom power supply eliminates all tonal artifacts produced by the speaker when idling Audio Connections LSR6328P Audio Connections The LSR6328P comes with a Neutrik Combi connector that accommodates either a...

Page 8: ...e system can be set for 4 dBu 8 dBu or 12 dBu sensitivity Switch 1 enables the Trim Control With the switch in the down position the Trim Control is out of the circuit and does not affect the input sensitivity In the up position the input trim is added to the circuit and will attenuate the input level from 0 13 dB relative to nominal Switch 2 lowers the input sensitivity to 4 dBu sensitivity when ...

Page 9: ... single LED indicator is located on the front of the LSR 6328P In normal operation this LED will be GREEN At the onset of clipping in either the low or high frequency amplifier the LED will flash RED Continuous flashing of the red LED indicates that levels should be reduced Caution The LSR6328P is capable of producing extremely high sound pressure levels To avoid hearing damage caution should be e...

Page 10: ...4th order 24 dB octave Linkwitz Riley electroacoustic responses from each transducer in phase 6 dB at crossover In order to achieve optimal symmetrical response in the vertical plane both magnitude and phase compen sation are implemented in the crossover network The crossover network allows the user to adjust the high frequency level above 3 kHz This allows the listener to compensate for effects o...

Page 11: ...ated There are both Left and Right models of the LSR6332 so that absolute symmetry can be maintained in all orientations NOTE The mid and high transducers can be easily damaged by screwdrivers carelessly handled Even with efficient magnetic struc tures there is always a small amount of leakage flux in the neighborhood of the voice coil gap which will attract hand tools and any nearby iron material...

Page 12: ...ds for Room Mode Correction which consists of a single section cut only parametric equalizer that can be adjusted in frequency width Q of cut and the amount of cut It is used to reduce the magnitude of any dominant low frequency peak in response due to standing waves at the listening position Details of Room Mode Correction are presented in the user guide included with the RMC Claibration Kit Audi...

Page 13: ...ng engi neers have the discretion to use or not use the subwoofer channel The Left Center and Right channels are routed to the respective LSR6312SP inputs and on to the front channel LCR speakers The LFE channel is sent directly to the Direct input of the LSR6312P When not in bypass mode the system operates as the stereo and Prologic setups previously described All subwoofer information is derived...

Page 14: ...ponse variations due to cancellation interference The Bass Alignment switches compensate for subwoofer location by adjusting the amount of low frequency power generated below 50 Hz Using a sound level meter a technique that has been used successfully is to put the subwoofer in the listening position and move the meter or yourself into possible subwoofer locations Finding the positions with the gre...

Page 15: ...15 LSR6312SP Powered Studio Subwoofer System L in C in R in Direct LFE in Source L out R out C out out out out out Center Right Left Right Rear Left Rear out out in in in in in System Configuration ...

Page 16: ... the XLR input as shown in Diagram A The COLD signal should be connected to Pin 3 of the XLR or the Ring of the T R S connector To avoid ground loops connect the SHIELD at the source end but not at the LSR input Unbalanced Sources When using unbalanced sources there are more possibilities to introduce ground loops into a system The LSR6328P and LSR6312SP offer several ways to help alleviate potent...

Page 17: ...eve plug The GROUND should be attached to the Ring of the Tip Ring Sleeve plug at the 6328P input Diagram E details the connections using unbalanced cable and Tip Sleeve connections to the 1 4 input In this mode the Ring and Sleeve of the input are shorted by the plug automatically Tip Sleeve Tip Ring Sleeve Pin 2 Pin 3 Pin 1 LSR Input Unbalanced Source Tip Sleeve Tip Ring Sleeve LSR T R S Input U...

Page 18: ...by the manufacturer of the mounting bracket be certain that it is capable of supporting the weight of the speaker to be mounted Appendix C RMC Room Mode Correction System Specifications Frequency Control 18 frequency centers 21 detents Q Contorl 1 2 octave to 1 20th octave 21 detents Depth Control 0 dB to 14 dB cut 21 detents Makeup Gain Control LSR6312SP only 0 dB to 6 dB Remote RMC Bypass Jack 1...

Page 19: ... 1 THD into rated impedance THD N H Power 0 05 Physical Finish Smooth dark graphite Handles 2 each flush mounted on sides Mounting 4 threaded mounting points conforming to industry standard square pattern 127 x 70 mm 5 x 2 75 in center to center M6 metric threads Enclosure Volume net 28 liter 1 cu ft Low Frequency Vent Rear ported linear dynamics aperture integrated with amplifier heat sink Baffle...

Page 20: ... Low Frequency below 120 Hz 2nd Harmonic 1 5 3rd Harmonic 1 Mid and High Frequency 120 Hz to 20 kHz 2nd Harmonic 0 5 3rd Harmonic 0 4 Distortion 102 dB SPL 1 m3 Low Frequency below 120 Hz 2nd Harmonic 1 5 3rd Harmonic 1 Mid and High Frequency 80 Hz to 20 kHz 2nd Harmonic 1 3rd Harmonic 1 Note 0 4 250 Hz 20 kHz Power Nonlinearity 20 Hz to 20 kHz 30 Watts 0 4 dB 100 Watts 1 0 dB Low Mid Frequency Cr...

Page 21: ...bypass mode Red LED Limiter activated Amplifier Low Frequency Topology Class A B all discrete Sine Wave Power Rating 260 watts 0 5 THD into rated impedance THD N H Power 0 05 AC Input Voltage 115 VAC 60 Hz 230VAC 50 Hz model LSR6312SP 230 AC Input Voltage Operating Range 15 Transducer Low Frequency Model 252F Diameter 300 MM 12 in Voice Coil 50 mm 2 in Differential Drive with dynamic braking coil ...

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Page 23: ...s because a charge will be made if replacement cartons are requested Payment of shipping charges is discussed in the next sec tion of this warranty 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 800 852 5776 We may direct you to an auth...

Page 24: ...essional international distributors is pro vided at our U S A website www jblpro com En Dehors des Etats Unis Contacter votre Distributeur JBL Professional Une liste com plète de nos distributeurs internationaux est disponible sur le site web www jblpro com International Wenden Sie sich an Ihre örtliche JBL Professional Vertretung Eine vollständige Liste der internationalen JBL Vertretungen finden...

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