JBL PRX600 Series User manual

PRX612M

PRX615M

User’s Guide

PRX625

PRX635

PRX618S

PRX618S-XLF

2

Important Safety Instructions 4

Precautions 5

Suspension of Loudspeaker Systems 6 - 7

Watch for These Symbols 8

PRX600 Series Speakers Declaration of Conformity 9

The PRX600 Series Power Amplifier 10

Introduction To The PRX600 Series 11 - 12

System Specifications 13 - 18

System Setup 19 - 22

CONTENTS

Setting Input Sensitivity 23

Setting The Gain 24

Application Examples 25 - 28

Reference 29

Cables and Connectors 30

Troubleshooting 31 - 32

Contact Information 33

Warranty Information 34

3

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
amplifiers) 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 wide
blade or the third prong is provided for your safety. If the provided plug does not fit 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 specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified 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.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified 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. If Service Instructions are included in the Owner's Manual: "CAUTION - THESE SERVICING
INSTRUCTIONS ARE FOR USE BY QUALIFIED SERVICE PERSONNEL ONLY. TO REDUCE THE RISK
OF ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE
OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO."

16. To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug

from the AC receptacle.

17. “WARNING – TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE.”

18. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as
vases, are placed on the equipment.

19. The main plug of the power supply cord shall remain readily operable.

Care And Cleaning

PRX600 series systems may be cleaned with a dry cloth. Do not get moisture into any of the openings in the
system. Ensure that the system is unplugged from the AC outlet before cleaning. In the event the DuraFlex finish
is damaged a touch up kit can be obtained from JBL Professional (part number 363972-001).

THIS APPARATUS CONTAINS POTENTIALLY LETHAL VOLTAGES. TO PREVENT ELECTRIC SHOCK OR
HAZARD, DO NOT REMOVE CHASSIS, INPUT MODULE OR AC INPUT COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

4

PRECAUTIONS

The PRX600 series speakers covered by this manual are not intended for use in high
moisture environments. Moisture can damage the speaker cone and surround and cause
corrosion of electrical contacts and metal parts. Avoid exposing the speakers to direct
moisture. Keep speakers out of extended or intense direct sunlight. The driver suspension will
prematurely dry out and finished surfaces may be degraded by long-term exposure to intense

ultra-violet (UV) light. PRX600 series speakers can generate considerable energy. When
placed on a slippery surface such as polished wood or linoleum, the speaker may move due to its acoustical
energy output. Precautions should be taken to assure that the speaker does not fall off a stage or table on which
it is placed.

Stand Mounting Safety Precautions

Some PRX600 series models include a 36 mm receptacle cup to allow mounting on tripod stands or on a pole
over subwoofers. When using stands or poles, be sure to observe the following precautions:

• Check the stand or pole specification to be certain the device is designed to support the weight of the
speaker. Observe all safety precautions specified by the manufacturer.

• Always verify that the stand (or subwoofer/pole) is placed on a flat, level and stable surface and be
sure to fully extend the legs of tripod type stands. Position the stand so that the legs do not present a
trip hazard.

• Route cables so that performers, production crew, and audience will not trip and topple the speakers over.

• Inspect the stand (or pole and associated hardware) before each use and do not use equipment with
worn, damaged or missing parts.

• Do not attempt to place more than one PRX600 series speaker on a stand or pole.

• Always be cautious in windy, outdoor conditions. It may be necessary to place additional weight (i.e.
sandbags) on the base of the stand to improve stability. Avoid attaching banners or similar items to any
part of a speaker system. Such attachments could act as a sail and topple the system.

• Unless you are confident that you can handle the weight of the speaker, ask another person to help
you get it onto the tripod stand or pole.

• The PRX635 should be pole-mounted on a PRX 600 subwoofer using a pole no longer than 24” in
length. (SS3-BK24 or SS4-BK24)

• JBL highly recommends that no more than 70 lbs of weight be placed on a speaker pole that is
mounted to a PRX618S or PRX618S-XLF.

Suspension of Loudspeaker System

Before attempting to suspend your JBL loudspeakers, read and understand the following safety information.

IMPORTANT SAFETY WARNING!

The information in this section has been assembled from recognized engineering data and is intended for
informational purposes only. None of the information in this section should be used without first obtaining
competent advice with respect to applicability to a given circumstance. None of the information presented herein
is intended as a representation or warranty on the part of JBL. Anyone making use of this information assumes
all liability arising from such use. All information presented herein is based upon materials and practices common
to North America and may not directly apply to other countries because of differing material dimensions,
specifications, and/or local regulations. Users in other countries should consult with appropriate engineering and
regulatory authorities for specific guidelines. Correct use of all rigging hardware is required for secure system
suspension. Careful calculations should always be performed to ensure that all components are used within their
working load limits before the array is suspended. Never exceed the maximum recommended load ratings.
Before suspending any speaker system always inspect all components (enclosure, rigging frames, pins,
eyebolts, track fittings, etc.) for cracks, deformations, corrosion, missing, loose or damaged parts that could
reduce strength and safety of the array. Do not suspend the speaker until the proper corrective action has been
taken. Use only load-rated hardware when suspending JBL suspendable loudspeaker models.

5

SUSPENSION OF LOUDSPEAKER SYSTEMS

Are You New to Rigging?

If you are new to rigging, you should do the following:

• Read and study JBL Technical Note Volume 1, Number 14: Basic Principles for Suspending Loudspeaker
Systems (available at http://www.jblpro.com/catalog/support/getfile.aspx?docid=296&doctype=3).

• Know the rules for safe rigging.

• Attend a safe rigging seminar, such as that presented by professionals like Rigging Seminars™ or by Chain
Motor Hoist manufacturers like Columbus McKinnon Corp. (manufacturers of the C/M Lodestar).

• Meet and establish a relationship with a licensed mechanical or structural engineer. Get in the habit of asking
them questions instead of guessing about their answers. Learn from what they tell you.

• Meet and discuss this aspect of your business with your Insurance Agent.

• Research and understand the codes, practices, and requirements in the venues where you intend to
operate your sound system.

General Hardware Information

Any hardware used in an overhead suspension application must be load rated for the intended use. Generally,
this type of hardware is available from rigging supply houses, industrial supply catalogs and specialized rigging
distributors. Local hardware stores do not usually stock these products. Hardware that is intended for overhead
suspension will comply with ASME B30.20 and will be manufactured under product traceability controls.
Compliant hardware will be referenced with a working load limit (WLL) and a traceability code.

Attachment to Structures

A licensed Professional Engineer must approve the placement and method of attachment to the structure prior
to the installation of any overhead object. The following performance standards should be provided to the
Professional Engineer for design purposes; Uniform Building Code as applicable, Municipal Building Code
as applicable, and Seismic Code as applicable.

The installation of the hardware and method of attachment must be carried out in the manner specified by
the Professional Engineer. Improper installation may result in damage, injury or death.

Inspection & Maintenance

Suspension systems are comprised of mechanical devices and, as such, they require regular inspection and
routine maintenance to insure proper function ability. JBL suspendable loudspeakers must be inspected for
fatigue at least annually or, if there has been significant seismic activity, immediately thereafter. The inspection
shall include a visual survey of all corners and load bearing surfaces for signs of cracking, water damage,
de-lamination, or any other condition that may decrease the strength of the loudspeaker enclosure. Accessory
suspension hardware provided with or for the JBL loudspeakers must be inspected for fatigue at least annually.
The inspection shall include a visual survey of the material for signs of corrosion, bending or any other condition
that may decrease the strength of the fastener. Additionally, any eyebolts shall be checked for possible spin-out
of the enclosure.

For all other hardware and fittings, refer to the hardware manufacturer's inspection and
maintenance guidelines for process.

JBL is not responsible for the application of its products for any purpose or the misuse of this information for
any purpose. Furthermore, JBL is not responsible for the abuse of its products caused by avoiding compliance
with inspection and maintenance procedures or any other abuse.

Prior to suspending the system, an expert, trained and experienced in suspending speaker systems should
inspect all rigging parts and components.

6

Resources

Adaptive Technologies Group McMaster Carr

562.424.1100 Various locations in the USA

1635 E. Burnett Street For a location near you, visit
Signal Hill, CA 90755 them at www.mcmaster.com
www.adapttechgroup.com

JBL Professional - Tech Note Vol. 1 No. 14
“Basic Principles for Suspending Loudspeakers”
www.jblpro.com/catalog/support/getfile.aspx?docid=296&doctype=3

Safe Rigging

JBL suspendable version loudspeakers are supplied with built-in internal brackets. The systems are designed
to facilitate the suspension of the loudspeaker by a qualified person familiar with rigging hardware and industry
practices. Improper installation may result in damage, injury or death.

If you are unfamiliar with Safe Rigging Practices you will need to consult with a qualified person familiar
with rigging hardware and industry practices.

Working Load Limit

Working Load Limit for M10 Suspension Points:

The working load limit (WLL) of the JBL PRX600 Series loudspeakers utilizing M10 attachment points will be
maintained with a safety factor of 5:1, provided no more than 470lbs/213kg from 2 points equally loaded, or no
more than 235lbs/106kg maximum from a single suspension point, is utilized in conjunction with industry
recognized safe rigging practices and the guidelines established within this manual.

For permanent installation applications utilizing the M10 suspension points order JBL 229-00009-01.
This kit includes three M10 x 35 mm forged shoulder steel eyebolts with washers.

WARNING

Suspension of JBL loudspeakers must employ a minimum of two attachment points. When "bridling" a JBL
loudspeaker system, two legs of equal length must be used. The rear attachment points are pull-back points and
are intended only for use in adjusting the down-angle of the speaker enclosure. Only the top and bottom
attachment points are intended for use as suspension points.

Hearing Damage, Prolonged Exposure To Excessive SPL

PRX600 series loudspeakers are easily capable of generating sound pressure levels (SPL) sufficient to cause
permanent hearing damage to performers, production crew and audience members. Caution should be taken to

avoid prolonged exposure to SPL in excess of 90 dB.

7

WATCH FOR THESE SYMBOLS!

RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR

!!

RISK OF ELECTRIC SHOCK
DO NOT OPEN

C A U T I O N

WARNING

- TO REDUCE THE

RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE.

The lightning flash with arrowhead symbol within
an equilateral triangle, is intended to alert the
user to the presence of uninsulated." "Dangerous
Voltage" within the products enclosure that may be
of sufficient magnitude to consitute a risk of
electric shock to persons.

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.

8

PRX600 Series speakers Declaration of Conformity

Safety And EMC Compliance Specifications

EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual
and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions

EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 20 cm

EN 55022:2003 Limits and Methods of Measurement of Radio Disturbance Characteristics
of ITE: Radiated, Class B Limits; Conducted, Class A

EN 55103-2:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual
and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity

EN 61000-4-2: A2:2001 Electrostatic Discharge Immunity (Environment
E2-criteria B, 4 kV Contact, 8 kV Air discharge)

EN 61000-4-3:2003 Radiated, Radio-frequency, Electromagnetic Immunity (Environment E2, criteria A)

EN61000-4-4:2005 Electrical Fast Transient/Burst Immunity (criteria B)

EN 61000-4-5:2001 Surge Immunity (criteria B)

EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (criteria A)

EN 61000-4-11:2004 Voltage Dips, Short Interruptions and Voltage Variation

UL 6500 2nd Edition 1999 Audio/Video and Musical Instruments Apparatus for Household, Commercial, and
Similar General Use

CAN/CSA-E60065-00 Audio, video and similar apparatus - Safety requirements

CSA Compliance Notice

CSA Certification Applies to Amplifier Module Only
CSA Certified to operate only at 120V~ in Canada

FCC Compliance Notice

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.

CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 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 instruction manual, may cause harmful interference to radio
communications. However there is no guarantee that the interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio and television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to collect 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.

9

The PRX600 Series Power Amplifier

AC Power Requirements

Standard PRX600 series speaker systems are equipped with a multi-channel Crown Class-D power amplifier
and loudspeaker specific DSP electronics and require appropriate AC power. Before plugging a PRX600
speaker into an outlet ensure that it is able to provide the appropriate AC power as required by the speaker.

A robust AC supply is necessary for maximum performance. If the supply is too weak the bass performance may
be affected and if it sags (drops) too much the system may self-mute to protect itself. As soon as the appropriate
AC supply is restored it will continue to operate. Plugging multiple systems into the same outlet and long
extension cord runs may affect the AC supply to the systems.

CAUTION

In compliance with safety agency criteria and proper system operation, it is critical that the system installer
observe all electrical safety practices at all times and provide proper earth grounding for all AC Power
connections.

Powering Up

The main power switch is located on the input panel on the back of the enclosure. Always ensure that the
speaker system is the last thing you power up, and the first thing to turn off when operating your complete PA
system. If speaker systems are daisy chained together always turn off the last system in the chain first. Power
“on” is indicated by the illumination of the blue LED on the front of the enclosure.

Changing Voltage

Your PRX600 series speaker will typically be set at the factory to accommodate the power main’s voltage in your
area. Before you set up your PRX600 series speaker for the first time it is a good idea to verify that the setting
of the selector is appropriate for the power in your area. In the event that you do need to change the voltage:

• Make sure that the speaker is powered off and the AC is disconnected from the speaker.

• Directly above the male IEC connector on the speaker is a voltage selector. Just slide the
switch to the appropriate setting.

• Set the voltage selector switch to the 115V for (100-120V~) or 230V for (220-240V~) range setting

as required for your area.

• After having reconfirmed that the correct voltage is selected, reconnect the AC (IEC connector)
and power the unit up.

DO NOT UNDER ANY CIRCUMSTANCES OPERATE THE UNIT WITH THE WRONG VOLTAGE SELECTED.
DOING SO MAY RESULT IN SERIOUS DAMAGE TO YOUR SPEAKER SYSTEM WHICH WILL NOT BE
COVERED BY WARRANTY.

Operating Temperature

The design of the Crown amplifier is such that it is very energy efficient and as a result does not get really hot.
In the rare event that it does get too hot it will automatically shut down to protect itself. When its temperature
has returned to within its operating range it will turn back on. A condition under which this may occur is when the
system is operated in very high ambient temperatures and the heat sink on the rear of the enclosure is in
direct sunlight. Always ensure adequate cooling and appropriate shade.

10

Introduction to the PRX600 Series

PRX612M

PRX615M PRX618S

PRX625 PRX635

PRX618S-XLF

Thank you for choosing the JBL PRX600 series self-powered PA loudspeakers. The PRX 600 Series represent
an evolutionary step in the efficient use of amplifier power, rugged durability and enhanced versatility in a self
powered loudspeaker. The speakers were designed from the ground up to perform in the real world of sound
reinforcement where challenging audio environments, high ambient noise levels and loud volumes are the norm.
And we’ve built these speakers to last a lifetime using tour tested technology that’s reliable and trustworthy.
Knowing you can rely on your system to deliver everything you need gives you the freedom to deliver your best.
That’s performance you can trust. With the PRX600 Series, as always, JBL delivers with precision and care.
Properly maintained, your PRX600 series speaker will provide you with many years of flawless performance. To
ensure you are always receiving optimum performance we encourage you to review this user’s guide completely
before hooking up your new system.

The PRX 600 Series is a platform technology that allows you to create the system you need from an intelligent
range of models. While each model was designed to excel at a specific application, the PRX Series integrate
seamlessly with one another offering a multitude of choices when tailoring a system to fit your specific needs.
Whether you need a single speaker on a stand for public address situations, a full-range stereo set up with two
top cabinets and a sub-woofer for live performance or DJ applications, or multiple cabinets for a scalable, highly
professional sound reinforcement situation, the PRX600 Series offers the solutions. In fact, you can even
suspend any of the top cabinets for use in a commercial installation or House of Worship. If versatility, scalability,
portability and affordability are what you’re looking for in a system, PRX 600s are the intelligent choice.

Road Tough

All PRX600 cabinets are built from a combination of 25mm (on the top and bottom for added rigidity) and 18mm,
strong, lightweight poplar plywood made structurally sound with tongue and groove joints. All PRX600 Series
cabinets are protected by JBL’s tour proven DuraFlex™ finish. We make our grilles from dent-resistant 16 gauge
steel and our handles are made from lightweight glass-filled nylon for added durability. All M10 suspension points
are constructed from 14 gauge steel and the M10 suspension points have been tested with a yield-strength of
1000 lbs. each.

11