JBL Stereo Amplifier LSR6325P 1 User Manual

Linear Spatial Reference  
Bi-Amplified Studio  
LSR6325P-1 Monitor  
Key Features:  
design with proprietary JBL  
transducer technology.  
High Performance bi-amplified  
Titanium composite high-frequency  
transducer.  
LSR Linear Spatial Reference  
technology ensures neutral off-axis  
response for greater clarity at the mix  
position.  
User-selectable Boundary  
Compensation restores accurate  
response when speaker is positioned  
near a wall or on a work surface.  
Front Panel Volume and Power  
Controls.  
Integrated mounting points.  
Magnetic shielding minimizes  
interference when used in close  
proximity to CRT monitors.  
Die cast aluminum enclosure  
provides high inertial ground for  
optimum transducer performance  
and low resonance.  
By incorporating LSR into the system design the LSR6325P-1 delivers greater  
high and mid frequency accuracy to the mix position, in a broad range of  
production environments.  
®
THX pm3 approved.  
Low Frequency Transducer  
The 5.25" woofer is based on JBL's research and field proven experience  
in low distortion, high excursion designs. The cone forms a rigid piston and  
is supported by a butyl rubber compliance. The motor structure incorpo-  
rates Symmetrical Field Geometry (SFG) with an integral shorting ring for  
maximum linearity. The high excursion capability provides a substantial  
increase in dynamic range over typical transducer design. A cast aluminum  
basket provides advanced heat dissipation for low power compression. The  
powerful structure is shielded for use in close proximity to CRT monitors.  
The LSR6325P-1 Studio Monitor  
provides ultra-accurate response and  
exceptional SPL capability in a very  
compact form factor. THX pm3  
®
approved, the LSR6325P-1 is ideal for  
stereo and surround recording, post  
production and broadcast systems  
where space is limited but accuracy  
and high-output are required. The  
LSR6325P-1 Studio Monitor combines  
JBL's latest in transducer and system  
technology and incorporates the LSR  
Linear Spatial Reference design to  
provide greater accuracy at the mix  
position. The Linear Spatial Reference  
(LSR) philosophy is based on a set of  
design goals that optimize the overall  
performance of the system in a vari-  
ety of acoustic spaces. Instead of  
focusing on a simple measurement  
such as on-axis frequency response,  
LSR design requires the system meet  
frequency-response criteria for seven-  
ty-two off-axis measurements.  
High Frequency Transducer  
The high frequency device is a 1" composite diaphragm integrated with  
an Elliptical Oblate Spheroidal (EOS) Waveguide with 60 x 100 degree dis-  
persion which is critical to the smooth spatial response required in today's  
working environments.  
Carefully-controlled dispersion,  
achieved through transducer design,  
crossover frequency selection and  
engineering of the enclosure, ensures  
not just the on-axis sound, but also  
the reflected sound which reaches of  
the mix position is neutral.  
 
LSR6325P-1 Linear Spatial Reference Bi-Amplified Studio Monitor  
Mounting Specifications:  
The LSR6325P-1 has built-in mounting points for use  
Specifications:  
with industry-standard mounting hardware.  
The mounting points are located on the rear panel of  
the speaker system. The four threaded holes accept a  
1/4" diameter machine screw with a pitch of 20 threads  
per-inch. The length of the screw should be a total of  
3/8th inch plus the thickness of the mounting bracket.  
Hole Pattern:  
System:  
Frequency Response (+1, -2 dB): 70 Hz - 20 kHz  
Enclosure resonance frequency: 55 Hz  
Low Frequency Extension: User controls set to default  
-3 dB: 65 Hz  
-6 dB: 56 Hz  
-10 dB: 48 Hz  
Low - High Frequency Crossover: 2.3 kHz  
4th-order Electroacoustic Linkwitz-Riley  
Distortion, 96 dB SPL, 1 m:  
Mid-High Frequency (150 Hz - 20 kHz):  
2nd Harmonic: <0.5%  
3rd Harmonic: <0.5%  
Low Frequency (<150 Hz):  
2nd Harmonic: <2%  
3rd Harmonic: <3%  
Maximum SPL (90 Hz - 20 kHz): >106 dB SPL / 1m  
107.9 mm  
(4.25 in)  
Maximum Peak SPL (90 Hz - 20 kHz): >109 dB SPL / 1m  
Signal Input: XLR, Balanced  
RCA, unbalanced  
Postitive voltage applied to XLR Pin 2 (RCA tip)  
produces outward woofer motion.  
Calibrated Input Sensitivity:  
XLR, +4 dBu: 96 dB SPL / 1 m  
RCA, -10 dBV: 96 dB SPL / 1 m  
AC Input Voltage: 115 /230 VAC, 50/60 Hz (User Selectable)  
AC Input Voltage Operating Range: +/- 15%  
AC Input Connector: IEC  
Long-Term Maximum System Power: 110 watts (IEC265-5)  
Self Generated Noise Level: <10 dBA / 1 m  
+
+
+
+
50.8 mm  
(2 in)  
User Controls:  
High Frequency Control (3 kHz - 20 kHz): +1.5 dB, 0 dB, -1.5 dB  
Workstation Boundry Compensation: Active or Bypass  
Low Frequency Acoustic Alignment: 36 dB/Octave Butterworth bi-pass at 40 Hz  
36 dB/Octave Bessel hi-pass at 80 Hz  
(For use with Subwoofer)  
Variable Input Attenuation: 0 - 26 dB  
Transducers:  
Low Frequency Diameter: 134 mm (5.25 in)  
Voice Coil: 38 mm (1.5 in)  
Magnet Type: Ferrite with Integral Shielding  
Cone Type: Tempered Paper with Butyl Rubber Compliance  
Nominal Impedance: 8 ohm  
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 quali-  
fied 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.  
High Frequency Diameter: 25 mm (1 in) diaphragm  
Voice Coil: 25 mm (1 in)  
Magnet Type: Ferrite with Integral Shielding  
Diaphragm Type: Damped Titanium Composite  
Other Features: Elliptical Oblate Spheroidal Waveguide  
Nominal Impedance: 4 ohms  
Amplifiers:  
Low Frequency:  
Topology: Bridged Class A-B Monolithic  
Sine Wave Power Rating: 100 watts (<0.1% THD into rated impedance)  
THD+N, 1/2 Power: <0.05%  
Notes:  
High Frequency:  
All measurements unless otherwise stated are made anechoically in a 4π environment  
Topology: Class A-B, Monolithic  
at 2 meters and are referenced to 1 meter by the inverse square law.  
Sine Wave Power Rating: 50 watts (<0.1% THD into rated impedance)  
THD + N, 1/2 Power: <0.05%  
The reference measurement microphone position is located perpendicular to the cen-  
terline of the low and high frequency transducers, at the point 70 mm (2.7 in) above  
the center of the woofer.  
Physical:  
Finish: Black Powdercoat  
Grille: Perforated Steel  
Enclosure Volume (net): 6.5 liter (0.2 cu. ft.)  
Low Frequency Vent: Dual Linear Dynamic Aperture  
Baffle Construction: Diecast Aluminum  
Cabinet Construction: Diecast Aluminum  
Acoustic loading provided by the listening room increases Maximum SPL capabilities  
and Low Frequency Bass Extension as compared to stated anechoic values.  
Distortion measurements are performed with the input voltage necessary to produce  
the stated “A” weighted SPL level at the stated measurement distance. Distortion fig-  
ures refer to the maximum distortion measured in any 1/10th octave wide band in the  
stated frequency range.  
Mounting: 4 threaded mounting points conforming to industry standard  
square pattern, 127 x 70 mm (5 x 2.75 in) 107.9 mm x  
50.8 mm (4.25 x 2 in) center to center. M6 metric threads.  
Net Weight: 7.7 kg (17 lb)  
JBL continually engages in research related to produce improvement. New materials,  
production methods, and design refinements are introduced into existing products  
without notice as a routine expression of that philosophy. 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 specifications unless otherwise stated.  
Dimensions (WxHxD): 17.3 x 26.9 x 24.1 cm (6.8 x 10.6 x 9.5 in)  
 
LSR6325P-1 Linear Spatial Reference Bi-Amplified Studio Monitor  
LSR6325P-1 5.1 Surround Sound System including the LSR6312SP Powered Studio Subwoofer and RMC™ Room  
Mode Correction Calibration Kit.  
JBL Professional  
8500 Balboa Boulevard, P.O. Box 2200  
Northridge, California 91329 U.S.A.  
A Harman International Company  
© Copyright 2006 JBL Professional  
SS LSR6325P-1  
CRP 5M  
05/06  
 

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