JBL LSR305, LSR308, LSR310S User Manual
Owners Manual
LSR305
5" Powered
Studio Monitor
LSR308
8" Powered
Studio Monitor
LSR3 10 S
10" Powered
Studio Subwoofer
Thank you for your purchase of JBL 3 Series Studio Monitors
To receive important information as it becomes available
please take a moment to register your 3 Series speakers now.
Click the link or go to www.jblpro.com/3series
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Section 1: Important Safety Instructions
1. Read these instructions.
Explanation of Graphic Symbols
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in
accordance with manufacturer’s instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves or other apparatus
that produce heat.
9. Do not defeat the safety purpose of the 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 t 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 receptacle and the
point where the power cord connects to the apparatus.
The exclamation point within an equilateral
triangle is intended to alert the users to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.
The lightning ash with the arrowhead symbol,
within an equilateral triangle, is to alert the
user to the presence of insulated “dangerous
voltage” within the products enclosure that may
be of sufcient magnitude to constitute a risk of
electric shock to humans.
CAUTION: TO REDUCE THE RISK
OF ELECTRONIC SHOCK - DO NOT
REMOVE COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL. DO NOT EXPOSE
THIS APPARATUS TO RAIN OR MOISTURE.
Any changes or modications not expressly approved
by the party responsible for compliance could void the
user's authority to operate the equipment.
11. Only use attachments/accessories specied by
the manufacturer.
12. Unplug this apparatus during lightning storms or
when unused for long periods of time.
13. Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, including: 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.
14. 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.
15. The apparatus shall be connected to mains socket outlet
with a protective earthing connection.
WARNING:
To reduce the risk of re 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 lled 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 re hazard.
This equipment has been tested and found to comply
with the limits for a class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to
radio or television reception, which can be determined
by turning the equipment off and on, the user is
encouraged to try to correct the interference by one
or more of the following measures:
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment
•
and receiver.
Connect the equipment into an outlet on a circuit
•
different from that to which the receiver is connected.
Consult the dealer or an experienced radio/ TV
•
technician for help.
CAN ICES-3(B)/NMB-3(B)
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Contents
Important Safety Instructions ..................................................................................... 3
Introduction .............................................................................................................5-6
Setting Up Your System .............................................................................................. 6
What's Included? ................................................................................................... 6
Unpacking .............................................................................................................. 6
Placement .............................................................................................................. 7
Audio Connections ................................................................................................ 8
Power Connections ................................................................................................ 8
Making Sound ........................................................................................................ 9
LSR305 and LSR308 Powered Studio Monitors
Front and Rear Views ........................................................................................... 10
Input Panel ........................................................................................................... 11
Audio Connections .............................................................................................. 11
LSR310S Powered Studio Subwoofer
Front and Rear View ........................................................................................... 12
Input Panel ........................................................................................................... 13
Audio Connections .............................................................................................. 13
Setting Subwoofer Level ..................................................................................... 14
Placement and Polarity ........................................................................................ 14
XLF, Extended Low Frequency Setting,
Crossover Settings and Bass Management ........................................................ 14
Surround Sound and .1 LFE Channel .................................................................. 15
Systems Connections .........................................................................................16-17
Trouble Shooting ........................................................................................................ 18
Specications ............................................................................................................. 19
JBL Service Contact Information .............................................................................. 20
Product Warranty Information ................................................................................. 21
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Section 2: Introduction
Congratulations on your purchase of JBL Professional 3 Series Studio Monitors. These studio monitors and
Subwoofer meet JBL’s high standards for accuracy and long-term reliability in demanding professional
applications. All 3 Series 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 acoustically varied work spaces and
production environments. Additionally, each speaker is equipped to interface with a range of signal
sources including high-output professional equipment.
JBL LSR Linear Spatial Reference Design
Because listening environments vary, JBL designed the 3 Series system using LSR Linear Spatial Reference
design criteria that improve 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 reected sound reaching the mix position is neutral. While most
manufacturers take only a single on-axis measurement of the speaker’s performance, Linear Spatial Reference
design criteria requires 72 measurements, 360 degrees around the speaker, yielding 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.
3-Series Image Control Waveguide
JBL’s revolutionary Image Control Waveguide gives the LSR305 and LSR308 remarkable imaging, a wide
sound-stage, and a solid “phantom center.” Subtle details can be heard, even in a dense mix. As an added
benet, incorporating this waveguide, 3-Series models give you a broad “sweet-spot” in your work space,
so you don’t have to be seated directly in front of the speakers to hear accurate, natural and open sound.
3 Series models include a range of features to meet the needs of demanding audio production applications.
LSR305 and LSR308 models include:
• Low frequency magnetically-shielded transducers, equipped with 1.5" voice coils and robust motor structures to
provide excellent low frequency performance. By reducing thermal-related effects, the 3 Series Studio Monitors
and Subwoofer sound the same at low, medium and high levels. The woofers are magnetically shielded to prevent
interference with magnetically sensitive displays and equipment. The woofer’s self-repairing dust dome is resistant
to dents caused by ngers or external objects.
• JBL’s Patented Slip Stream
bass response at all playback levels. The double-ared shape of the port is precisely engineered for greater lowfrequency extension and reduced turbulence.
• Bi-amplied Design with individual power ampliers for the Low Frequency and High Frequency Transducers.
The design utilizes efcient high-output Class D integrated power ampliers to provide high SPL
(Sound Pressure Level) for demanding production applications.
• Soft dome magnetically-shielded high-frequency transducers with optimally damped materials to improve
transient response and minimize distortion. By reducing distortion in the lower operating range, where the
ear is most sensitive, these transducers reduce ear fatigue.
• Balanced XLR and 1/4" connectors, a dented level attenuator to allow interface to a broad range of signal
sources. The +4 dB / -10 dB input sensitivity switch allows connection of the speakers to high-output
professional equipment without danger of input overload.
• High Frequency and Low Frequency Trim controls in the LSR308 and LSR305 allow adjustment of frequency
response to preference, or to compensate for acoustically reective or absorptive listening environments.
™
low frequency port design that works in concert with the woofer to produce deep
Producing extended low frequency into the 20 Hz region, the LSR310S is the perfect match for the LSR305
and LSR308 Studio monitors. The LSR310S feature set includes:
• A custom designed down-ring, High-Excursion 10" woofer with an additional bucking magnet.
• 200 Watts Class D Power Amplier with abundant output and dynamic headroom for the most
demanding production styles.
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• Patented Slip Stream Port – The patented JBL low frequency port design works in concert with the
3 Series woofer for accurate bass response at all playback levels.
• A detented volume control makes it easy to balance of the LSR310S in your studio monitor system.
• Balanced XLR and 1/4" inputs and XLR outputs you can add the LSR310S to any studio monitor system
to extend its low frequency performance, or use it as the “.1” LFE Channel in a surround sound system.
• The -10 dBV/+4 dBu sensitivity switch ensures compatibility with a broad range of signal sources, allowing
you to connect the LSR310S to high-output professional equipment without any danger of input overload.
• Three Crossover settings: 80 Hz, XLF, External
• The 80 Hz setting implements high and low pass lters to create a seamless blend of the LSR310S with
JBL’s LSR305 or LSR308 studio monitors or models from other manufacturers.
• The external setting bypasses all ltering, allowing use of an external crossover.
• The special XLF setting activates a 120 Hz High Pass Filter in conjunction with a low frequency tuning
that approximates the tuning used in club playback systems. Using this setting, the bass output more
than doubles.
• A protective limiting circuit allows the subwoofer to operate continuously at full output without failure.
JBL Professional Reliability
Prior to becoming a production-ready design, each 3 Series model is subjected to JBL’s tough 100-hour power
test, in which the speaker is required to play continually at full output for 100 hours without failure. This demanding
test ensures your 3 Series speakers will deliver years of reliable performance. To get the most out of your JBL 3
Series, 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
Each 3 Series box includes the following items:
• One 3 Series Studio Monitor or Subwoofer
• One Power Cord
• Quick Set Up Guide
• LSR308 and LSR305 include peel-off rubber pads
UNPACKING
When removing a speaker from its packaging, we recommend the following procedure, which will prevent
damage of the high frequency transducer located near the top of the cabinet on the front of the speaker:
LSR305 and LSR308:
• Remove the outer shipping carton, if one exists.
• Place the inner carton on the oor with the top facing upwards.
• Open the top of the box.
• Without removing the internal packaging end-cap, gently rotate the carton so the open end
rests on the oor and the bottom of the carton is facing you.
• Gently lift the carton allowing the speaker and protective end-cap to slide out of the carton
and remain on the oor.
• Save the cartons and use the above procedure in reverse when you want to repack the
units for shipment.
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LSR310S Subwoofer - The subwoofer weighs 19 kg (42 lbs.) Unpacking the subwoofer does not require you lift the
subwoofer. However, you will need to rotate the subwoofer in the carton. If you are unable to perform the following
steps without assistance, please request help from another person.
• Remove the outer shipping carton, if one exists.
• Place the carton on the oor with the bottom facing upward.
• Open the bottom aps of the carton and remove any protective packing materials from the bottom of the
subwoofer. Open the bag that protects subwoofer, exposing the subwoofer’s four feet.
• Gently rotate the carton so the bottom of the carton is facing the oor and the four feet of the subwoofer are
in contact with the oor.
• Gently lift the carton allowing the subwoofer and protective packing materials to slide out of the carton and
remain on the oor.
• Remove the protective packing materials and documentation from the top of the subwoofer. Save the
cartons and use the above procedure in reverse when you want to repack the units for shipment.
PLACEMENT
3 Series speakers are designed to deliver exceptional imaging in any room. To get the most out of your speakers,
follow these recommendations:
• Locate the four self-adhesive rubber pads supplied with LSR305 and LSR308 speakers. Position and attach
these to the bottom surface of the speaker close to each corner.
• Position each LSR305 and LSR308 speaker in a vertical orientation with the tweeter on the top.
Vertical orientation eliminates phase shift and cancellation of frequency response that occurs when the
distance of the woofer to the ear is different from the distance of the tweeter to the ear.
• Angle the speakers so the high-frequency transducer in each speaker is aimed directly towards the ear
of the listener.
• Ideally, LSR305 and LSR308 Series speakers should be placed on suitable speaker stands, rather than on
the work surface. This will reduce resonance and deterioration of low frequency performance that occurs
through the speaker’s mechanical coupling with the work surface.
• For optimum imaging, the left speaker and the right speaker should be placed symmetrically in the room,
so each speaker is the same distance from adjacent walls and reective surfaces.
• The speakers should be placed so the position of the listener and the two speakers form an equilateral
triangle. Adjusting the distance between the speakers will affect the quality of bass heard at the listening
position. You can experiment with speaker placement to nd the placement that produces the preferred
bass response, imaging and when listening to stereo material, produces a strong “phantom” center in
which vocals and some instruments seem to originate from a point between speakers.
• The listening distance can be determined according to your preference, the acoustics of your room and the
maximum SPL (Sound Pressure Level) you want to hear at the listening position. You can nd the speaker’s
maximum SPL at 1 Meter in the Specications Section at the end of this manual. Each doubling of listening
distance will reduce the SPL at the listening position by 6 dB in an acoustically absorptive room, but only 3
or 4 dB in an acoustically reective room.
LSR310S Subwoofer placement: The low frequency driver of the 310S is mounted on the bottom panel of the
subwoofer. Before placing the subwoofer, make sure the position on the oor is free of any large objects that can
interfere with or damage the woofer. In a stereo system, The LSR310S Subwoofer should be placed directly on the
oor, located between the Left and Right Speakers. In a surround sound system, the subwoofer can be located
between the Left and Center or between the Right and Center channel Speakers. The distance of the subwoofer
from the listening position can be adjusted to produce the optimum balance of bass in the system. Placing the
subwoofer close to a wall or in a corner generally will increase the amount of bass heard in the room. Experiment to
determine the Subwoofer placement that produces the best balance and quality of bass in the system.
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