JBM electronic Studio Monitors User Manual

JBL has more ex pe ri e n c e in designing and building tra n s d u ce r s
for pro fessional studio monitors than any other co m p a ny.We
not only use the latest engineering and design equipment, b u t
also the most impo rt a n t test dev i ce of all,the human ear.We
be l i eve in phys i c s,not fads,so while other companies pick part s
off somebody else’s shelf,we cre ate our co m po n e nts fro m
s c ratc h . And by utilizing 60 years of ex pe ri e n ce in tra n s d u c e r
d e s i g n , we cre ate the pe rfe ct tra n s d u cer for each sys t e m .

In the gre at tradition of JBL Studio Mo n i to r s, we are pleased
to offer the LSR6300 Se ries and the new LSR4300 Se ri e s—t h e
l atest in tra n s d u cer and sys t em te c h n o l ogy combined with
re ce n t bre a k t h roughs in re s e a r ch and deve l o p m e n t to provide
a more accurate studio re fe re n ce.

The Linear Sp atial Refe re n c e (LSR) philosophy is based on a set
of design goals that ca refully co nt rol the ove r all pe rfo rm a n c e
of the sys t em in a va ri e ty of acoustic space s.I n s t ead of foc u s i n g
on a simple measure m e n t such as on-axis fre q u e n cy re s po n s e,
JBL measures sys tems in a field 360 degrees around the spe a ke r
and engineers the ent i re sys tem to ensure off-axis re s po n s e
re f l e c ted to the mix position is also smooth and accurate.Th e n
JBL goes a step further to ove rcome problems caused by low
f re q u e n c y room modes which plague mix engineers.A JBL first,
the RMC™ Room Mode Co rre ction sys t em is included in the
LSR6300 and LSR4300 Se r ies monito r s.The RMC sys tem includes
eve rything needed to analyze LF problems and re s t o re accura c y
at the mix po s i t i o n .

Studio Monitors

JBL PROFESSIONAL IS THE PROUD RECIPIENT OF THE 2005 TECHNICAL GRAMMY®

The National Academy Of Recording Arts and Sciences Presented the

2005 Technical GRAMMY® Award to JBL Professional for Continual Mastery

and Innovation in Concert,Studio, Cinema and Broadcast Sound and Monitors

to Ensure Exacting Standards for the Most Accurate Sonic Experience.

key fe a t u r e s

f

L I N E A R S PAT I A L R E F E R E N C E D E S I G N

f

RMC™ RO O M M O D E CO R R E C T I O N

f

M O U N T I N G P O I N T S FO R INDUSTRY S T A N D A R D
M O U N T I N G H A R D WA R E

f

BA L A N C E D A N D U N B A L A N C E D I N P U T S W I T H
+4 dBU , -1 0 dBv S ENSITI VITY

f

E X C E L L E N T ON- AN D OFF-AX I S P E R F O R M A N C E

f

H I G H S P L CA P A B I L I T Y

S T U D I O M O N I T O R S

It takes more than an accurate speaker system
to have accurate response at the mix position.
Problems in the room dramatically color what
you hear at the mix position.Walls and corners
can affect response. And standing waves at the
mix position can lead you to misjudge bass
content.As a result,a speaker which measures
flat in an anechoic chamber may “tell you a
different story” in the room.The key to accu-
racy is tackling the effect of boundaries,
standing waves and reflections.In developing
the LSR Series,JBL examined each problem in
the environment and created the perfect solu-
tion. Even if you work in a small control room,
an LSR system will provide smooth accurate
response at the mixer’s chair.

LSR (Linear Sp a tial Refe re n ce Te c h n o l ogy )

Much of what you hear at the mix position is
reflected—not direct sound.Linear Spatial
Reference Technology ensures mid and high
frequency response of our speakers is neutral at
the mix position.The exact geometry of the wave-
guide,the interaction of the woofer and tweeter,
and the network are designed to provide an accu-
rate listening window of ± 30 degree horizontal,
± 15 degree vertical. As a result,the reflected
sound that reaches the mix position
is smooth and accurate.

RMC™ (Room Mode Co rre c t i o n )

Room modes or standing waves can mislead you
give you a false impression of low frequency
content in the mix.JBL is first to supply a complete
solution for identifying and overcoming the nega-
tive effect of room modes.The LSR 6328P,6312SP
and all LSR4300 models are equipped with RMC™,
JBL's ingenious Room Mode Correction System.
The LSR6300 RMC Calibration kit includes every-
thing needed to identify room modes and set the
LSR6300 series on-board parametric equalizer.JBL
engineers took the RMC solution one step further
by equipping the LSR4300 Series speakers with an
automated analyzer and corrective filter.Both
systems dramatically improve low frequency
performance at the mix position.

Built-in Bo u n d a ry Co m p e n s a tion

With the advent of multi-channel production,
space limitations may compromise the
positioning of the speakers. JBL’s powered
LSR6300 models include boundary compensation
switches and the LSR4300 RMC Systems includes
filters to offset the increase in bass response,that
occurs when the speaker is placed near a wall, in a
corner or on a work surface.

Stunning So u n d

Starting with application-designed and built
transducers engineered for extremely accurate
response and superb power handling,the stun-
ning sound of the LSR Series Studio Monitors
make long mix sessions a pleasure.The LSR6300
line* incorporates the single most significant
advance in monitor history: JBL’s patented
Differential Drive Technology. Providing unparal-

leled performance, the woofer permanently
dispels the notion that better linearity,higher

power handling and greater dynamic accuracy
are somehow unobtainable.JBL’s Differential

Drive uses two drive coils with twice the thermal
surface area of traditional speakers. As a result,
LSR6300 systems provide higher peak output

with less spectral shift that causes monitors to
sound different when driven at different power
levels.All LSR Series speak ers withstand the JBL
loudspeaker torture test driven at full rated

power for over 100 hours.Meeting higher stan-

dards than any other loudspeaker manufacturer,
JBL’s demanding test ensures that the LSR Studio
Monitors give you accurate mixes year after year.

* (LSR6328P, LSR6332, LSR6312SP)

The JBL LSR6300 and LSR4300 Series go “beyond accurate”all the way to“stunning”by incorporating features which reduce the effect of
problems in the room.We start with JBL transducer and network technologies that provide ultra-flat response and exceptional dynamic
range.Then we incorporate features that help to overcome the contributions of the room.So even if you work in a small home studio,you’ll
have clear sound at the mix position.All LSR models are engineered for use in the most demanding production environments.With JBL’s
LSR6300 Series and the new LSR4300 Series,mixing is a pleasure.

The LSR Series

Elliptical Oblate Spheroidal (EOS) Waveguide

Designed for a targeted listening window of ± 30 degrees horizontally and ±15 degrees
vertically,the EOS provides smooth response through the entire listening window within

1.5 dB of the on-axis response.The result: The listener,even far off-axis, can hear an
accurate representation of the on-axis response.

Composite High Frequency Device

The 1" magnetically shielded dome high frequency device incorporates titanium and
composite materials to improve transient response and reduce distortion.The result:
By reducing distortion in the lower operating range where the human ear is most
sensitive,listener fatigue is dramatically reduced.

500G Midrange Transducer

The midrange is a 2" neodymium motor with a 5-inch woven Kevlar™ cone.The powerful
motor structure was chosen to support the low crossover point to the woofer.In order to
achieve the goal of accurate spatial response,the crossover points match the directivity
characteristics of the three transducers for optimum spatial response.The result:
Absolute pinpoint accuracy.

Dynamic Braking

LSR6300 low frequency transducers are equipped with an electromagnetic braking coil
that reduces the effects of extreme excursion with high transient material.This causes
more linear compliance resulting in lower distortion,more accurate reproduction and
increased reliability.

LSR6332

Reinforced mounting points on LSR speakers

allow convenient positioning and installation of

multi-channel surround systems for any mixing

application, in any studio environment.

Carbon Fiber

Composite Cone

Dual Magnetic Gaps

Dynamic Brake Coil

Neodymium Magnet

Aluminum

Diecast Heatsink

Dual Drive Coils

Diecast Frame

Di f fe r e n tial Dri ve® Te c h n o l ogy

s p e c i f i c at i o n s

F R E Q U E N C Y R E S P O N S E

LO W F R E Q U E N C Y E XT E N S I O N

A M P L I F I E R POWER (LF/HF)

SPL (CONTINUOUS/PEAK 1)

LO N G - T E R M M AXIMUM POWER

DRIVERS (LF, M F, H F )

S E N S I T I V I TY

S YS T E M I M P E D A N C E

C R O S S O V E R F R E Q U E N C I E S

H F A D J U S T M E N T

I N P U TS

M AG N E T I C S H I E L D I N G

M O U N T I N G CA PA B I L I TY

F I N I S H

D I M E N S I O N S

(H x W x D)

N E T WEIGHT (each)

L S R 6 3 2 5 P - 1

70 Hz - 20 kHz (+1, -2 dB)

-10 dB : 48 Hz
100 W/50 W
106 dB/109 dB

5.25 in/1 in
96 dB/1m

2.3 kHz
+1.5 dB/-1.5 dB
XLR,RC A
Yes
Yes
Dark Graphite
269 x 173 x 241 mm

(10.6 x 6.8 x 9.5 in)

7.7 kg (17 lb)

L S R 6 3 2 8 P

50 Hz - 20 kHz (+1, -1.5 dB)

-10 dB :36 Hz
250 W/120 W
108 dB/111 dB

8 in/1 in
96 dB/1m

1.7 kHz
+1 dB/-1 dB
XLR,

1

⁄

4

in
Yes
Yes
Dark Graphite
406 x 330 x 325 mm

(16 x 13 x 12.5 in)

17.7 kg (39 lb)

L S R 6 3 3 2

60 Hz - 22 kHz (+1, -1.5 dB)

-10 dB : 35 Hz

200 W cont/800 W peak
12 in/5 in/1 in
93 dB/2.83V/1 m (90 dB/1 W/1 m)
4 ohms
250 Hz/2.2 kHz

-1 dB
Dual 5-Way Binding
Yes
Yes
Dark Graphite
635 x 394 x 292 mm

(25 x 15.5 x 11.5 in)

20.4 kg (45 lb)

L S R 6 3 1 2 S P

28 Hz - 80 Hz (-6 dB)

-10 dB : 26 Hz
260 W
112 dB/115 dB
200 W cont/800 W peak
12 in
96 dB/1 W/1 m

80 Hz

XLR,

1

⁄

4

in
Yes
Yes
Dark Graphite
394 x 635 x 292 mm

(15.5 x 25 x 11.5 in)

22.7 kg (50 lb)

L S R 6 3 2 5 P - 1

The compact LSR6325P-1 provides exceptional

performance for use in applications where
accuracy is a must, but space is limited.With a

5.25" high-excursion woofer,1" damped titanium
co m po s i te twe e t e r, and 150 watts of amplificat i o n ,
it outperforms many larger systems. A boundary
compensation setting adjusts response when
used on workstation surfaces.When used with the
LSR6312SP Subwoofer,the LSR6325P-1 is the
heart of an exceptionally accurate yet space
efficient full-range system.

L S R 6 3 2 8 P

The LSR6328P is THE choice for stereo and multi-

channel music and post audio applications where
accuracy and high SPL are required.With ruler-flat
+1 dB/-1.5 dB response from 50 Hz to 20 kHz, low
frequency extension to 36 Hz, boundary compen-
sation and JBL’s new RMC™ system, the LSR6328P
gives you exceptional low frequency performance
in any room.The system is bi-amplified with a
250 Watt LF amplifier and a 120 Watt HF amplifier.
Based around JBL’s patented 8" Differential Drive®
carbon-fiber woofer and a 1" titanium composite
tweeter,the system produces smooth response
and extraordinary SPL. Wall mounting provisions
make the LSR6328P perfect
for installation in multi-
channel editorial rooms.

L S R 6 3 3 2

If you need a larger monitor with high SPL, for
mid-field,soffit or behind the screen applications,
the LSR6332 is your choice.This three-way non-
powered system can handle 200 watts continuous
pink noise/800 watts peak and will generate 112
dB SPL at 1 meter.The LSR6332 incorporates a 12"
neodymium Differential Drive dual coil woofer,
5" Kevlar™ midrange speaker and 1" titanium
composite tweeter.The system is exceptionally
flat,+1 dB/ –1.5 dB from 60 Hz to 22 kHz with LF
extension to 35 Hz. User features include a –1 dB
HF level setting,and dual 5-way binding posts for
bi-wire capability.

L S R 6 3 1 2 S P

The LSR6312SP powered subwoofer is based on

a 12" woofer with JBL’s patented neodymium
Differential Drive and 260 watts of power.An
integral bass-management system provides all
the features you need for today’s multi-format
surround production including: LCR and Direct
LFE inputs,summed output for chaining multiple
subwoofers,-4 dB alignment setting, and JBL’s
new RMC Room Mode Correction system. RMC
Calibration Kit included.

LSR6300 Series

f

L I N E A R S P AT I A L R E F E R E N C E D E S I G N

f

RMC™ RO O M M O D E CO R R E C T I O N
S Y S T E M

f

THX pm3 ® A P P R O V E D

f

I N T E G R AT E D M O U N T I N G P O I N T S

f

PAT E N T E D D I F F E R E N T I A L D R I V E ®
T E C H N O LO G Y

RMC™ (Room Mode Correction) Calibration Kit

The LSR6328P and LSR6312SP Subwoofer are equipped with RMC–JBL’s
ingenious method of zeroing-out bass problems at the mix position
caused by room modes.A built-in 1/10th oc tave parametric equalizer
allows you to correct problems below 100 Hz.The RMC Calibration Kit
gives you everything you need to identify problematic room modes and
tune your system.The LSR6325P-1 and LSR6332 enjoy the benefits of
RMC when used in a system with the LSR6312SP Subwoofer.

LSR6328P LSR6332 LSR6312SP

LSR6325P-1

LSR6300 SERIES

2004 WINNER

1

Calculated using average 1 watt/ 1 meter sensitivity and peak amplifier output.

RMC Calibration Kit Included with LSR6312SP