JBL 308P Mkii, 306P Mkii, 305P Mkii User Manual
Owners Manual
305P MkII
5" Powered
Studio Monitor
306P MkII
6" Powered
Studio Monitor
308P MkII
8" Powered
Studio Monitor
LSR310S
10" Powered
Studio Subwoofer
Product Registration
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 at www.jblpro.com/registration.
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Table of Contents
Section 1: Important Safety Instructions ...............................................................................................................4
Section 2: Introduction ...........................................................................................................................................5
JBL Linear Spatial Reference (LSR) Design ...................................................................................................5
Image Control Waveguide ..............................................................................................................................5
305P, 306P, and 308P MkII Features ..............................................................................................................5
LSR310S Powered Studio Subwoofer Features ............................................................................................. 6
JBL Professional Reliability ............................................................................................................................6
Section 3: Setting Up Your System ........................................................................................................................ 7
Each 3 Series Carton Includes the Following Items: ...................................................................................... 7
Unpacking....................................................................................................................................................... 7
Placement ....................................................................................................................................................... 7
Audio Connections .........................................................................................................................................9
LSR310S Powered Studio Subwoofer Connections ......................................................................................9
Power Connections ........................................................................................................................................9
Making Sound.................................................................................................................................................9
Section 4: 305P, 306P, and 308P MkII Powered Studio Monitors ....................................................................... 10
Features ........................................................................................................................................................ 10
Input Panel ....................................................................................................................................................11
Audio Connections .......................................................................................................................................11
Section 5: LSR310S Powered Studio Subwoofer ................................................................................................ 12
Features ........................................................................................................................................................ 12
Input Panel ....................................................................................................................................................13
Audio Connections .......................................................................................................................................14
Setting the Subwoofer Level ........................................................................................................................14
Placement and Polarity Setting ....................................................................................................................14
Crossover Settings and Bass Management ................................................................................................ 15
Surround Sound Systems and LFE ..............................................................................................................15
Section 6: System Connections ...........................................................................................................................16
Two Channel Systems ..................................................................................................................................16
Surround Sound Systems .............................................................................................................................17
Section 7: Troubleshooting ................................................................................................................................... 18
Section 8: Specifications ...................................................................................................................................... 19
Section 9: JBL Service Contact Information........................................................................................................20
Section 10: Product Warranty Information ..........................................................................................................21
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Section 1: Important Safety Instructions
1. READ these instructions.
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 the manufacturer’s
instructions.
8. DO NOT install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including ampliers) 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 wider blade or the third prong are 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 receptacles, and the point where they exit from the apparatus.
11. ONLY USE attachments/accessories specied by the manufacturer.
12.
13. UNPLUG this apparatus during lightning storms or when unused for long periods of time.
14. REFER all servicing to qualied 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. DO NOT expose this apparatus to dripping or splashing and ensure that no objects lled
with liquids, such as vases, are placed on the apparatus.
16. To completely disconnect this apparatus from the AC Mains, disconnect the power supply
cord plug from the AC receptacle.
17. Where the mains plug or an appliance coupler is used as the disconnect device, the
disconnect device shall remain readily operable.
18. DO NOT overload wall outlets or extension cords beyond their rated capacity as this can
cause electric shock or re.
WARNING: To reduce the risk of re or electrical shock, do not expose this apparatus to rain
or moisture.
WARNING: No naked ame sources – such as lighted candles – should be placed on the
product.
WARNING: Equipment shall be connected to a MAINS socket outlet with a protective
earthing connection.
CAUTION: To reduce the risk of electric shock, grounding of the center pin of this plug must
be maintained.
WARNING: This product is intended to be operated ONLY from the voltages listed on the
back panel or the recommended, or included, power supply of the product. Operation from
other voltages other than those indicated may cause irreversible damage to the product and
void the products warranty. The use of AC Plug Adapters is cautioned because it can allow
the product to be plugged into voltages in which the product was not designed to operate. If
you are unsure of the correct operational voltage, please contact your local distributor and/or
retailer. If the product is equipped with a detachable power cord, use only the type provided,
or specied, by the manufacturer or your local distributor.
USE ONLY with a cart, stand, tripod, bracket, or table specied by the
manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
The exclamation point, within an equilateral triangle, is intended to alert the user
to the presence of important operating and maintenance (servicing) instructions
in the literature accompanying the product.
The lightning ash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of sufcient magnitude to constitute
a risk of electrical shock to persons.
ESD Warning: The icon to the left indicates text regarding potential danger
associated with the discharge of static electricity from an outside source (such
as human hands) into an integrated circuit, often resulting in damage to the
circuit.
WARNING: Do Not Open! Risk of Electrical Shock. Voltages in
this equipment are hazardous to life. No user-serviceable parts
inside. Refer all servicing to qualied service personnel.
Place the equipment near a main power supply outlet and make
sure that you can easily access the power breaker switch.
FCC AND CANADA EMC COMPLIANCE
INFORMATION:
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation.
NOTE: 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.
Approved under the verication provision of FCC Part 15 as a Class
B Digital Device.
Caution: Changes or modications not expressly approved by the
manufacturer could void the user’s authority to operate this device.
CAN ICES-3 (B)/NMB-3(B)
EU COMPLIANCE INFORMATION:
Hereby, Harman Professional declares that the equipment type
JBL 305P MKII, 306P MKII, 308P MKII, are in compliance with the
following:
• European Union Low Voltage Directive 2014/35/EU
• European Union EMC Directive 2014/30/EU
• European Union Restriction of Hazardous Substances Recast
(RoHS2) Directive 2011/65/EU
• European Union Registration, Evaluation, Authorization and
Restriction of Chemicals (REACH) Directive 1907/2006
The full text of the EU declaration of conformity is available at the
following Internet address: http://www.jblpro.com/www/product-
support/downloads
WEEE NOTICE:
This appliance is labeled in accordance with
European Directive 2012/19/EU concerning waste
of electrical and electronic equipment (WEEE).
This label indicates that this product should not
be disposed of with household waste. It should
be deposited at an appropriate facility to enable
recovery and recycling.
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Section 2: Introduction
Congratulations on your purchase of JBL Professional 3 Series Studio Monitors. The 3 Series 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 Linear Spatial Reference (LSR) design
ensures greater accuracy at the mix position in acoustically varied workspaces and production environments.
Additionally, each speaker is equipped to interface with a range of signal sources, including high-output
professional audio equipment.
JBL LINEAR SPATIAL REFERENCE (LSR) DESIGN
Because listening environments vary, JBL designed the 3 Series system using Linear Spatial Reference design
criteria that improve accuracy at the listening position in a broad range of rooms. The key to accuracy is
ensuring that not only the on-axis sound is neutral, 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, taken 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.
IMAGE CONTROL WAVEGUIDE
JBL’s revolutionary Image Control Waveguide gives the 3 Series Powered Studio Monitors remarkable imaging,
a wide soundstage, and a solid “phantom center”. Subtle details can be heard, even in a dense mix. As an
added benet, the Image Control Waveguide provides a broad “sweet spot”, so you don’t have to be seated
directly in front of the speakers to hear accurate and natural and open sound.
305P, 306P, AND 308P MKII FEATURES
3 Series MkII models include a range of features to meet the needs of demanding audio production applications:
• The magnetically-shielded low frequency transducers in MkII models, equipped with 1.5" voice coils and
robust motor structures ne tuned for increased linearity, deliver excellent low frequency performance. By
reducing thermal-related effects, the 3 Series MkII Studio Monitors and LSR310S 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™ low frequency port design works in concert with the woofer to produce
deep bass response at any playback level. The double-ared shape of the port is precisely engineered for
greater low frequency extension and reduced turbulence.
• The bi-amplied design, with individual power ampliers for the low frequency and high frequency
transducers, uses efcient high-output Class-D integrated power ampliers to provide high SPL (sound
pressure level).
• Magnetically-shielded soft dome high frequency transducers with optimally damped materials 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 ¼" input connectors.
• +4dBu / -10dBV INPUT SENSITIVITY switch allows connection to consumer-grade or high-output
professional equipment without danger of input overload.
• Detented VOLUME attenuator allows ne adjustment of levels for a broad range of signal sources.
• HIGH FREQUENCY TRIM control to adjust the high frequency response to taste or compensate for
acoustically reective or absorptive listening environments.
• BOUNDARY EQ switch compensates for low-frequency acoustic anomalies that can occur when
loudspeakers are in close proximity to walls.
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LSR310S POWERED STUDIO SUBWOOFER FEATURES
Producing extended low frequency response into the 20Hz region, the LSR310S is the perfect match for the 3
Series MkII studio monitors. The LSR310S feature set includes:
• A Magnetically-shielded low frequency transducer, equipped with a 1.5" voice coil and robust motor
structure for excellent low frequency performance. By reducing thermal-related effects, the 3 Series MkII
Studio Monitors and LSR310S Subwoofer sound the same at low, medium, and high levels. The woofer
is 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.
• A custom-designed down-ring, high-excursion 10" woofer with additional bucking magnet.
• A 200 watt Class-D power amplier with abundant output and dynamic headroom for the most demanding
production styles.
• The patented Slip Stream low frequency port, designed to work in concert with the 3 Series MkII woofers
for accurate bass response at all playback levels.
• A detented VOLUME control, making it easy to balance the LSR310S with the studio monitor system.
• Balanced XLR and ¼" input connectors.
• Two XLR output connectors to add the LSR310S to any studio monitor system and extend its low
frequency response.
• A +4dBu / -10dBV INPUT SENSITIVITY switch for connection to consumer or high-output professional
equipment without danger of input overload.
• Three CROSSOVER settings:
• 80Hz – This setting implements high- and low-pass lters to create a seamless blend of the
LSR310S with the 3 Series MkII studio monitors or other speaker system.
• XLF – This special setting activates a 120Hz high-pass lter 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.
• External – The external setting bypasses all ltering, allowing use of an external active crossover.
• 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 the 3 Series speakers will deliver years of reliable performance. To get the most out
of the 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.
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Section 3: Setting Up Your System
EACH 3 SERIES CARTON INCLUDES THE FOLLOWING ITEMS:
• One 3 Series MkII studio monitor or 3 Series subwoofer
• One power cord
• Quick setup guide
• Four peel-off rubber pads (305P, 306P, and 308P MkII models only)
UNPACKING
When removing a speaker from its packaging, we recommend the following procedure, which will prevent
damage of the high frequency transducer:
305P, 306P, and 308P MkII models:
1. Remove the outer shipping carton, if one exists.
2. Place the inner carton on the oor with the top facing upwards.
3. Open the top of the box.
4. 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.
5. Gently lift the carton and allow the speaker and protective end-cap to slide out of the carton and remain
on the oor.
6. Save the cartons and use the above procedure in reverse when you want to repack the units for
shipment.
LSR310S subwoofer – The subwoofer weighs 19 kg (42 lbs). Unpacking the subwoofer does not require you to
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.
1. Remove the outer shipping carton, if one exists.
2. Place the carton on the oor with the bottom facing upward.
3. Open the bottom aps of the carton and remove any protective packing materials from the bottom of the
subwoofer. Open the bag that protects the subwoofer to expose the subwoofer’s four feet.
4. Gently rotate the carton so the bottom is facing the oor and the four feet of the subwoofer are in contact
with the oor.
5. Gently lift the carton and allow the subwoofer and protective packing materials to slide out and remain on
the oor.
6. Remove the protective packing materials and documentation from the top of the subwoofer. Save the
carton and use the above procedure in reverse when you want to repack the unit for shipment.
PLACEMENT
3 Series MkII Studio Monitors 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 the 305P, 306P, and 308P MkII speakers. Position
and attach these to the bottom surface of the speaker close to each corner.
• Position each 305P, 306P, or 308P MkII Studio Monitor in a vertical orientation with the tweeter on top.
Vertical orientation eliminates phase shift and acoustic cancellation of frequencies that can occur 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.
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