JBL PRX718XLF User manual
PRX710
PRX712
User’s Guide
PRX715
PRX715XLF
PRX718XLF
PRX725
PRX735
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CONTENTS
Important Safety Instructions ............................................................. 4
Precautions ........................................................................................5
Suspension of Loudspeaker Systems ............................................... 6
Watch for These Symbols ................................................................. 8
PRX700 Series Speakers Declaration of Conformity ........................ 9
PRX700 Series Power Amplier .......................................................10
Introduction To The PRX700 Series .................................................11
System Specications ......................................................................13
System Setup - Full-Range Models ..................................................16
System Setup - Subwoofers .............................................................18
Troubleshooting ................................................................................20
Contact Information ..........................................................................22
Warranty Information ........................................................................23
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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 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 receptacles,
and the point where they exit from the apparatus.
11. Only use attachments/accessories specied by the manufacturer.
12. Use only with the 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.
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. 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 lled 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
PRX700 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
nish 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.
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PRECAUTIONS
The PRX700 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 nished surfaces may be degraded by long-term exposure to
intense ultra-violet (UV) light. PRX700 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 PRX700 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 specication to be certain the device is designed to support the weight of the
speaker. Observe all safety precautions specied by the manufacturer.
• Always verify that the stand (or subwoofer/pole) is placed on a at, 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 PRX700 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 condent that you can handle the weight of the speaker, ask another person to help
you get it onto the tripod stand or pole.
• JBL highly recommends that no more than 80 lbs of weight be placed on a speaker pole that is
mounted to a PRX715XLF or PRX718XLF.
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 rst 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, specications, and/or local regulations. Users in other countries should consult with appropriate
engineering and regulatory authorities for specic 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 ttings, 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.
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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/getle.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 specied 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 signicant 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 ttings, 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.
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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/getle.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 qualied 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 qualied 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 PRX700 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
PRX700 series loudspeakers are easily capable of generating sound pressure levels (SPL) sufcient 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.
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SUSPENSION OF LOUDSPEAKER SYSTEMS
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 products enclosure that may be
of sufcient 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.
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