User's Guide - JBL Professional
Contents
1. PRX612M PRX615M 6185 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 offerin2. PRX618S Single subwoofer application in stereo mode see page 22 Right Main Output PRX612M 26 Live Performance Or Music Playback Reinforcement System With Stage Monitors PRX635 and PRX612M or PRX615M This is an ideal system when wide coverage and good directivity is required specifically in highly reverberant rooms The horn loaded PRX635 3 way system will control the propagation of the sound much better than a conventional 2 way system The more directional or controlled the sound is the more independent the system becomes from the room acoustics present resulting in a much clearer sound The PRX635 s full low end is an additional advantage when no subs are used The PRX612Ms are set to the monitor EQ setting PRX635 PRX612M Monitor Output Use Boost position if extra low end is required Switch to Monitor position for optimum performance as floor wedge 27 Large Live Performance Or Music Playback Reinforcement System With Stage Monitor 4 x PRX618S XLF 4 x PRX625 and 2 x PRX612M
3. Full Range Monitor vertical orientation Monitor monitor orientation Frequency Response 3 dB Full Range Monitor vertical orientation Monitor monitor orientation Input Connectors Input Impedance Signal indicators EQ Dynamic Control Input Crossover Modes Crossover Frequency Design Power Rating LF Driver HF Driver Coverage Pattern Directivity Index DI Directivity Factor Q Enclosure Suspension Mounting Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight Gross Weight Self powered 12 two way bass reflex 134 dB Full Range peak 133 dB Monitor peak 50 Hz 19 5 kHz 60 Hz 19 5 kHz 51 Hz 19 5 kHz 60 Hz 17 5 kHz 90 Hz 18 kHz 61 Hz 18 5 kHz Balanced XLR 1 4 inch combo jack with XLR loop through 20K Ohms balanced 10K Ohms unbalanced Limit Red LED indicates limiter active condition Signal Green LED indicates signal present Presets for use in Main and Monitor position dbx Type IV limiter circuit DSP controlled LF 48 dB Oct filter slope High amp Low Pass HF 36 dB Oct High Pass 2 kHz Crown Class D 1000 W 2 x 500 1 x JBL 262F 1 380 mm 12 in Differential Drive dual voice coil and magnetic gap neodymium woofer 1 x JBL 2408H 37 5 mm 1 5 in annular polymer diaphragm neodymium compression driver 90 x 50 nominal 9 8 dB 9 6 Asymmetrical 18 mm plywood Dual 36 mm pole socket 8 x M10 S
4. Connectors Input Impedance Signal indicators Polarity Crossover Modes Crossover Frequency Dynamic Control Input Design Power Rating LF Driver Enclosure Suspension Mounting Transport Finish Grille Dimensions H x W x D Net Weight Gross Weight Self powered 18 bass reflex 133 dB peak 30 Hz 105 Hz 39 Hz 93 Hz Balanced XLR 1 4 inch combo jack with XLR loop through stereo 20K Ohms balanced 10K Ohms unbalanced Limit Red LED indicates limiter active condition Signal Green LED indicates signal present normal or reverse polarity DSP controlled 48 dB Oct filter slope 90 Hz dbx Type IV limiter circuit Crown Class D 1000 W 2 x 500 460 mm 18 in Differential Drive dual voice coil and magnetic gap neodymium woofer Rectangular 18 mm plywood M20 threaded pole socket on top 2 x injection molded handles with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing 685 8 mm x 530 9 mm x 716 3 mm 27 0 in x 20 9 in x 28 2 in 37 kg 81 5 Ib 42 3 kg 93 Ib 18 SYSTEM SET UP FULL RANGE MODELS PRX600 Amplifier Input Configuration for PRX612M PRX615M PRX625 and PRX635 Full Range Models 12 34 5 PRX615M MAIN MIC ele MONITOR LINE 7 JBL L LINE SELECT N POWER PROFESSIONAL 7 JBL PROFESSIO
5. 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
6. For larger crowds in and outdoors a flexible system like this will deliver excellent results The dual 15 inch PRX625 delivers mighty bottom end and crisp highs The combination of extra PRX618S XLF subwoofers gives it an even more thunderous low end The PRX625s can be arrayed as pair of two on each side for a wider coverage and some extra SPL extremely useful in outdoor applications PRX625 PRX618S XLF 4 PRX612M Right Main Output 28 REFERENCE Balanced vs Unbalanced Lines Your PRX600 series can accept either type of input There are two basic types of audio system interconnections for audio signals Balanced and Unbalanced Balanced Lines In audio a balanced line is a three conductor system in which the two signal wires carry an equal but opposite voltage with respect to the ground wire The ground wire acts only as a shield and does not carry any audio signal current Outside interference such as RFI Radio Frequency Interference is either shielded from the internal signal conductor or if it gets into the cable is cancelled out by the opposite signals at the receiving end Balanced connections are preferred for long c
7. INA User s Guide PRX625 PRX 6 18 5 XLF JBL by HARMAN CONTENTS Important Safety Instructions Precautions Suspension of Loudspeaker Systems Watch for These Symbols PRX600 Series Speakers Declaration of Conformity The PRX600 Series Power Amplifier Introduction To The PRX600 Series System Specifications System Setup Setting Input Sensitivity Setting The Gain Application Examples Reference Cables and Connectors Troubleshooting Contact Information Warranty Information o A L N 1142 13 18 19 22 23 24 25 28 29 30 31 32 33 34 IMPORTANT SAFETY INSTRUCTIONS oN oc PD 13 14 19 Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 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 Protect
8. Review the Owner s Manual for your system setup and adjust controls as needed Input sensitivity gain Check gain structure of signal chain 31 Noise or hiss heard at output Hum or Buzz that increases or decreases when the mixer level controls are moved Hum or Buzz Speakers feed back and howl when the microphone volume is turned up Too much low frequencies when playing back prerecorded music Noisy Source Device Improper A C ground or faulty equipment connected to mixer input Faulty cable between source equipment and mixer Improper A C grounding ground loops Excessively long unbalanced cable run Improper system gain structure Microphones are pointed into the speakers Equalizer settings are incorrect Excessive gain Recorded music with excessive low frequencies Disconnect the devices that are connected to your speaker one at a time If the noise goes away the problem is with the source or the connecting cable Disconnect or mute channels one at a time to isolate the problem Refer to the owner s manual of the faulty equipment for troubleshooting help Substitute a known good cable for the suspected faulty cable Telescope the audio ground by using an XLR F to XLR M adapter on one end Re route audio cable away from AC power and lighting cables Use the balanced outputs if available of your mixer to drive your PRX speakers Use a DI direct injection bo
9. another speaker SYSTEM SET UP SUBWOOFER Models PRX618S XLF PRX618S XLF LIMITER Sa gt POWER gt d LINE SELECT AC LINE INPUT 100V 240V Amplifier Module Only 50 60 Hz 5A 600W CSA Certification applies to 10 iun sembled by JBL in Mexico T 22 6 CSA Certificated to operate signed in the USA Features 1 XOVER IN OUT Pressing this button engages a high pass filter that allows a smooth transition between the subwoofer and a full range speaker connected to the output connector 2 POLARITY INVERT Allows you to set the polarity of the subwoofer to either Normal no change or Reverse inverse polarity The correct polarity setting will produce the best blend between the subwoofer and the full range speaker and the strongest perceived bass response at the listening position This is especially useful when the subwoofer is placed at a different distance from the listening position than the full range speakers If the bass response seems weak try inverting the polarity 3 LEVEL Sound level adjustment The 12 o clock position is a good starting point for most usages Once the full range system has been connected the level can be varied to match and deliver the desired balance for details see Setting the Gain on page 24 6 POWER SWITCH Turns the power on Power on status is indicated with the illumination of the grille logo 7 LINE SELECT Allows user sele
10. are warranted for three years from the date of original purchase Enclosures and all other JBL products are warranted for two years from the date of original purchase Who Is Protected By This Warranty Your JBL Warranty protects the original owner and all subsequent owners so long as A Your JBL product has been purchased in the Continental United States Hawaii or Alaska This Warranty does not apply to JBL products purchased elsewhere except for purchases by military outlets Other purchasers should contact the local JBL distributor for warranty information and B The original dated bill of sale is presented whenever warranty service is required What Does The JBL Warranty Cover Except as specified below your JBL Warranty covers all defects in material and workmanship The following are not covered Damage caused by accident misuse abuse product modification or neglect damage occurring during shipment damage resulting from failure to follow instructions contained in your Instruction Manual damage resulting from the performance of repairs by someone not authorized by JBL claims based upon any misrepresentations by the seller any JBL product on which the serial number has been defaced modified or removed Who Pays For What JBL will pay all labor and material expenses for all repairs covered by this warranty Please be sure to save the original shipping cartons because a charge will be made if replacement cartons are requested Pa
11. 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 n
12. 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 Ibs 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 loa
13. x 16 27 in 27 2 kg 60 Ib 29 2 kg 64 5 Ib 16 185 System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB Frequency Response 3 dB Input Connectors Input Impedance Signal indicators Polarity Crossover Modes Crossover Frequency Design System Power Rating LF Driver Enclosure Suspension Mounting Transport Finish Grille Dimensions H x W x D Net Weight Gross Weight Self powered 18 bass reflex 129 dB peak 41 Hz 130 Hz 50 Hz 100 Hz Balanced XLR input with XLR loop through stereo 1 4 inch speaker level input Mono 20K Ohms balanced Overload Red LED indicates input overload condition Signal Green LED indicates signal present normal or reverse polarity analog 24 dB Oct filter slope 120 Hz Crown Class D 600 W 268G 460 mm 18 in Differential Drive dual voice coil and magnetic gap neodymium woofer Rectangular 18 mm plywood 36 mm pole socket on top 2 x injection molded handles with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing 685 8 mm x 530 9 mm x 614 7 mm 27 0 in x 20 9 in x 24 2 in 32 kg 70 5 Ib 37 2 kg 82 Ib PRX618S XLF System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB Frequency Response 3 dB Input
14. N OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE 34 UBL PROFESSIONAL Part Number 444833 001 2 11 8500 Balboa Boulevard Northridge CA 91329 USA www jblpro com by HARMAN
15. NAL Northridge USA H A Harman International Company AC LINE INPUT 100V 240V 60 H A w Equipped with Differential Drive 50 60 HZ7 2690 Transducer Technology U S PATENT 5 748 760 Other U S and foreign patents pending CSA Certification applies to Amplifier Module Only 8 CSA Certificated to operate at 120V in Canada 9 5 5 een 169113 Designed in the USA Assembled by JBL in Mexico T5AL250V Features 1 EQ BOOST FLAT When set in the FLAT position frequency response is linear and unaltered When Boost is selected internal equalization is applied to enhance low frequency and high frequency response FLAT will provide greater accuracy of reproduced music higher speech intelligibility and maximum overall level BOOST is particularly useful at lower levels to enhance the low and high frequencies of pre recorded music The feature provides flexibility without the need to use an external equalizer The following graph shows the effect of the BOOST setting MAIN MONITOR Switching between MAIN and MONITOR optimizes the system for use as either a main full range system or a stage monitor PRX612M and PRX615M only Attenuation dB 20 100 1000 10000 20000 Frequency Hz 2 INPUT MIC LINE Allows the selection of different input sensitivities to permit the connection of many different sou
16. NY POSITION OTHER THAN THE OFF POSITION MAY RESULT IN EXTREMELY HIGH SOUND PRESSURE LEVELS 23 SETTING THE GAIN Only a properly set up system will guarantee maximum performance with a minimum of distortion and feedback This is as true for self powered systems as it is for passive systems An easy rule to follow is Everything should clip at once Following these simple steps will ensure you are getting the optimum performance out of your complete system 1 Once the source has been connected to the input of your mixer adjust the input sensitivity or trim so that the highest input levels are set to just before clip or when the input LED just starts to flicker 2 Position the channel fader for that input to O dB 3 Position the Master output fader to O dB 4 With the Mic Line button set to Line because the system is receiving a line level signal or commonly called a 4 dB signal set the Level control to the 12 o clock position and adjust until you have attained an appropriate volume for the room or until the LIMITER LED just begins to flicker For in depth articles related to gain structure please refer to the website where you can find the JBL Sound System Design Reference Manual http www jblpro com pub technote ssdm 99 pdf 24 APPLICATION EXAMPLES Basic Sound Reinforcement System This is a very basic sound system PRX600 series speakers allow the direct connection of sound sources with
17. able runs Unbalanced Lines Unbalanced cable is a two wire system where the shield ground wire acts as one of the current carrying signal conductors The center conductor enclosed by the shield is commonly known as the hot conductor Unbalanced audio cables do not reject noise as well as balanced lines Unbalanced lines are typical in home hi fi type systems and on the outputs of electronic musical instruments These work well if the distance between the components is short the signal level is relatively high and all of the electronics used in the system are plugged into the same AC outlet 29 CABLES AND CONNECTORS XLR F to XLR M Microphone Cable The standard cable for interconnection of microphone and line level signal in professional audio systems Microphone to mixer Microphone to PRX600 direct input Professional audio mixer to PRX600 Daisy chaining PRX600 speakers TRS balanced 1 4 inch phone jack For connecting balanced devices with 1 4 inch phone and maybe to XLR M used interchangeably TRS unbalanced 1 4 inch For connections of instruments with unbalanced outputs to balanced phone jack to XLR M XLR inputs TS unbalanced 1 4 inch phone jack This cable is electrically identical to TRS unbalanced 1 4 inch to XLR M phone and maybe used interchangeably XLR M to RCA phono cable Connects consumer audio products and some DJ mixer outputs to professional audio equipment inputs TRS 1 4 inch phone jack to dua
18. age or table on which itis 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
19. bass reflex 139 dB peak 40 Hz 19 5 kHz 39 Hz 19 5 kHz 55 Hz 17 5 kHz 50 Hz 18 kHz Balanced XLR 1 4 inch combo jack with XLR loop through 20K Ohms balanced 10K Ohms unbalanced Limit Red LED indicates limiter active condition Signal Green LED indicates signal present Presets for use in Main and Boost position dbx Type IV limiter circuit DSP controlled LF 48 dB Oct filter slope High amp Low Pass HF 36 dB Oct High Pass 1 8 kHz Crown Class D 1500 W 3 x 500 2 x JBL 265F 1 380 mm 15 in Differential Drive dual voice coil and magnetic gap neodymium woofer 1 x JBL 2408H 1 37 5 mm 1 5 in annular polymer diaphragm neodymium compression driver 90 x 50 nominal 10 2 dB 10 1 Trapezoidal 18 mm plywood 8 x M10 Suspension Points and 1 x M10 Pull Back Point Integrated handle with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing Balanced XLR 1 4 inch combo jack with XLR loop through 1 053 mm x430 mm x 413 mm 41 47 in x 16 9 in x 16 27 in 27 2 kg 60 Ib 29 2 kg 64 5 Ib PRX635 System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB Flat Boost Frequency Response 3 dB Flat Boost Input Connectors Input Impedance Signal indicators EQ Dynamic Control Input Crossover Modes Crossover Frequency Design Pow
20. cally lighter package With the neodymium magnet positioned inside the dual coil dual gap voice coil heavy steel pole pieces are eliminated And the heat sink is the chassis itself further lowering system weight while ensuring consistent reliable performance Intelligence provided by Crown and dbx The PRX 600 Series integrated digital power amplifiers were developed specifically for JBL by Crown the most trusted name in professional sound reinforcement amplification for over 45 years The Class D amplifiers are high powered low distortion and lightweight ensuring faithful audio reproduction while conforming to our strict maximum performance to weight ratio design guidelines Additionally we ve integrated the award winning dbx amp Type IV limiter circuit on the inputs to guarantee signal integrity We further optimize the system performance through the use of sophisticated Digital Signal Processing for EQ crossover amplifier control and protection This is the Harman family working together to bring you the best in world class audio technology Versatile Professionally discreet in appearance the new PRX models are appealing to any musician entertainer A V rental company or commercial facility looking for superior audio performance in a professional yet affordable package We ve included suspension points for light duty commercial installation and a two position pole mount for convenient stand use And as compared to their predeces
21. ction of different local voltage ratings 8 AC LINE INPUT Standard IEC AC line input connector Indicators 4 SIGNAL Signal indicator The green LED illuminates when a signal is present at the input connector 5 LIMITER The red LED illuminates when the system overload protection is active If the input signal is too strong or the LEVEL control set too high the red LED will illuminate constantly Illumination of the LIMITER LED can be avoided by reducing the input level or turning down the LEVEL control to the point at which the red LED occasionally flickers Connectors 9 amp 11 XLR 1 4 inch phone jack balanced input connector see Reference section page 29 for information 10 amp 12 XLR Male balanced output connector This connector provides a full range or high passed signal Dependent on the setting of the switch In addition to connecting a full range system to the output it s also possible to daisy chain subwoofers together Note 3 A single subwoofer can be used with a stereo source The input differential circuits sum the low frequency information from the left and right channel to a mono signal ready for reproduction by the subwoofer 21 SYSTEM SET UP SUBWOOFER Models PRX618S 1 212 4 1 POLARITY SWITCH This switch changes the polarity of the subwoofer to either 0 no change or 180 inverse polarity The correct polarity setting will produce the best blend bet
22. d 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 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 amp 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 mu
23. ed directly to the MIC input Signal sounds distorted and very loud OVERLOAD light is lit most of the time Signal sounds distorted even at moderate volumes OVERLOAD light is not lit Speaker not connected to active AC power Speaker power cable is faulty or improperly connected Blown fuse Signal source mixer instrument etc is not active Faulty cables and connections Faulty cables and connections Microphone requires 48V phantom power Faulty microphone cable Excessive input signal trying to exceed the capabilities of the speakers Mixer or other source is overdriven clipping Verify that speaker is connected and that circuit is on Switch on power and verify that illuminated logo is on Re seat the power cable at both ends Substitute a known good power cable Replace the fuse with the specified value and type Take your speaker to a competent Service center Check VU meters on the source mixer Verify that the CD MP3 is playing Use headphones to verify thatthe instrument is actually sending an audio signal Disconnect and re seat signal cables Replace suspected cable with a known good cable The PRX600 speakers do not supply phantom power Switch to a dynamic microphone use a battery in the microphone if possible use an external phantom power supply Check cable Reduce the output level of the source Turn down the level controls on the speaker
24. eed 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 WARRANT Y 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
25. elationship between the components in order to maximize amplifier and speaker efficiency spectral balance tone and dependability Here at JBL we not only work hard on the system but on our proprietary components as well Products like Differential Drive amp speakers for example are patented designs born from years of dedicated research and development into acoustical and transducer science No one else has access to this technology and Differential Drive amp speakers have been tested on worldwide concert tours for years Harman Professional Green Edge Mission At Harman Professional we understand and respect that we have a duty to serve our customers and our employees by serving the planet We accept that responsibility and strive to be energy efficient and environmentally minded in our everyday business When we design produce and deliver our products we look for opportunities to do so more efficiently and sustainably We re committed to a healthier planet and healthier life for every living thing JBL is proud that PRX600s have been certified Green Edge compliant by Harman Professional We ve reduced the weight and size from the PRX500 Series and we re using only renewable materials in the packaging We ve not only lowered our Carbon Footprint but the CF of any one who purchases them 12 SYSTEM SPECIFICATIONS PRX612M System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB
26. er Rating LF Driver MF Driver HF Driver Coverage Pattern Directivity Index DI Directivity Factor Q Enclosure Suspension Mounting Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight Gross Weight Self powered 15 three way bass reflex 135 db peak 41 Hz 19 kHz 40 Hz 19 kHz 53 Hz 18 kHz 50 Hz 18 kHz Balanced XLR 1 4 inch combo jack with XLR loop through 20K Ohms balanced 10K Ohms unbalanced Limit Red LED indicates limiter active condition Signal Green LED indicates signal present Presets for use in Main and Boost position dbx Type IV limiter circuit DSP controlled LF 48 dB Oct filter slope High amp Low Pass HF 36 dB Oct High Pass 460 Hz 2 75 kHz Crown Class D 1500 W 3 x 500 1 x JBL 265F 1 380 mm 15 in Differential Drive amp dual voice coil and magnetic gap neodymium woofer 1 x JBL 195H 165 mm 6 5 in horn loaded midrange transducer 1 x JBL 2414H 25 4 mm 1 in annular polymer diaphragm neodymium compression driver 90 x 50 nominal 9 6 dB 9 1 Trapezoidal 18 mm plywood 36 mm pole socket 8 x M10 Suspension Points and 1 x M10 Pull Back Point Integrated handle with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing Balanced XLR 1 4 inch combo jack with XLR loop through 921 mm x 429 mm x 413 mm 36 29 in x 16 9 in
27. g 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 Ibs each Differential Drive Transducers Extended frequency response high power output and low distortion are hallmarks of all JBL transducers Our tour tested tour proven and patented Differential Drive technology delivers all this performance in a dramati
28. g and ensure that no objects filled with liquids such as vases are placed on the equipment 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 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 st
29. ging 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 a
30. l 1 4 Splits a stereo output into separate left right signals inch phone jack TRS 1 4 inch phone jack to dual 1 4 Change to a TRS mini phone jack to connect to the output of a portable inch phone jack MP3 CD player and computer sound cards to a mixer or two PRX600 speakers for stereo performance to audio ground lift Use only with balanced in and outputs XLR F to XLR M Microphone Cable 1 shield e E 1 0 Tip 1 shield BI 19 Sleeve 3 TRS Unbalanced 1 4 Phoneto XLR M Cable Tip 1 shield 1 25 gt Sleeve 3 Tip 1 shield gt Sleeve 3 XLR M to RCA phono Cable 1 Center e IE a ee OEE 3 Shield TS Unbalanced 1 4 Phone to RCA phono Cable TP SLEEVE TRS 1 4 Phone to dualTS 1 4 Phone to wr ed Tip SLEEVE Tip Sleeve shield AI Ring TF RING SLEEVE Sleeve 92 lt D Sleeve shield XLR F to XLR M Audio Ground Lift 10 O 1 no connection e je l e 2 6 02 3 0 M0 3 KING SLEEVE RING SLEEVE TS Unbalanced 1 4 Phoneto XLR M Cable lt Center Sleeve Sleeve shield 30 TROUBLESHOOTING Symptom Likely Cause What To Do No sound No sound speaker is connected to working AC power but won t come on No sound speaker turns on No sound with microphone connect
31. nd Monitor position dbx Type IV limiter circuit DSP controlled LF 48 dB Oct filter slope High amp Low Pass HF 36dB Oct High Pass 1 8 kHz Crown Class D 1000 W 2 x 500 1 x JBL 265F 1 380 mm 15 in Differential Drive amp dual voice coil and magnetic gap neodymium woofer 1 x JBL 2408H 37 5 mm 1 5 in annular polymer diaphragm neodymium compression driver 90 x 50 nominal 10 0 dB 10 0 Asymmetrical 18 mm plywood Dual 36 mm pole socket 8 x M10 Suspension Points and 1 x M10 Pull Back Point Integrated handle with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing Balanced XLR 1 4 inch combo jack with XLR loop through 660 mm x 429 mm x 414 mm 26 in x 16 9 in x 16 3 in 19 7 kg 43 5 Ib 24 2 kg 53 5 Ib 14 PRX625 System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB Flat Boost Frequency Response 3 dB Flat Boost Input Connectors Input Impedance Signal indicators EQ Dynamic Control Input Crossover Modes Crossover Frequency Design Power Rating LF Driver HF Driver Coverage Pattern Directivity Index DI Directivity Factor Q Enclosure Suspension Mounting Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight Gross Weight Self powered dual 15 two way
32. of your speaker system If the LIMIT LED illuminates excessively Reduce the LEVEL control Reduce the output level of the mixer or other source connected to the subwoofer 4 SIGNAL INDICATOR This LED Green illuminates to indicate a usable signal from connected INPUT s 5 LEVEL CONTROL Adjusts the input sensitivity of the subwoofer amplifier It does not affect OUTPUTS A amp B PRX618S 9 10 11 6 INPUT A amp INPUT CONNECTORS These electronically balanced XLR connectors accept input signal from line level sources a INPUT A and INPUT B are combined before being routed to the PRX618S internal Low Pass Filter LPF and internal amplifier b INPUT A and INPUT B are also routed to the OUTPUT A and OUTPUT B connectors see HIGH PASS FILTER switch 7 OUTPUT A amp OUTPUT B CONNECTORS These provide either a loop thru or a high passed line level output of the signal from the INPUT A and INPUT B connectors respectively These connectors work with the HIGH PASS FILTER HPF switch 8 SPEAKER LEVEL INPUT CONNECTOR This 1 4 TS phone jack allows connecting of the speaker level output of an amplifier or powered mixer to the PRX618S internal amplifier 9 AC INPUT CONNECTOR For attachment of the included power cable 10 POWER SWITCH Turns the AC power to the unit on and off The power ON LED illuminates to indicate that the unit is on 11 POWER INDICATOR Indicates AC
33. out the need for extra mixer or pre amplifier The XLR or 1 4 inch input jack provides versatility and cabling options and the mic line input sensitivity selector switch optimizes the speaker gain for the input source Additional speakers may be connected daisy chained together in mono mode CD Player ERISNUEFIM MP3 Player PRX615M etc um Use Boost for and other ay prerecorded music Electronic Instrument Microphone etc Use Flat for musical instrument or microphone 25 Music Playback Reinforcement with Subwoofer PRX612M Pole Mounted on a PRX618S This is a very powerful but flexible combination The subwoofer provides the extra low frequency extension and also serves as the base for the pole mount The compact 12 inch satellite system PRX612M is a perfect match to the subwoofer From the master outputs of your mixer route the wires to the subwoofer first and select the x over in high pass option Route the cable from the subwoofer output connector to the top Reduce the volume of subwoofers Adjust the volume for the top to desired levels and match the subwoofer volume to achieve desired results This will provide a well balanced LF performance for the system PRX612M
34. power status of the unit on and off The LED Blue illuminates to indicate that the unit is on 22 SETTING THE INPUT SENSITIVITY PRX600 series systems have been designed to allow the connection of a variety of sources This provides a great deal of versatility especially with the PRX612M and PRX615M as a microphone or instrument can be connected directly to the input Low level outputs from consumer products like MP3 and CD players can also be accommodated There are two user selectable gain or input sensitivity ranges Mic and Line For the majority of applications the system will be receiving a signal from a mixer equalizer of other professional grade product In this case Line should be selected and the LEVEL adjusted to the 12 o clock position indicated by the 4 dB region The LEVEL control can then be trimmed to optimize the performance of the system see Setting The Gain LINE When a microphone instrument or other consumer product is connected to the system first ensure that the LEVEL control is at its minimum counter clockwise OFF position Then select the Mic input sensitivity and slowly increase the level If the LIMITER LED illuminates you should back the level down again If the LIMITER LED illuminates and the LEVEL control is at its minimum setting then you should try selecting the LINE input sensitivity range MIC WARNING SELECTING THE MIC POSITION WITH THE LEVEL CONTROL IN A
35. rces with or without the use of a mixer or external microphone preamplifier See Setting Input Sensitivity on page 24 3 LEVEL Sound level adjustment With the input in the position the level can be adjusted over a large range In the LINE position most typical applications will require that the level control is set at 12 o clock More details are outlined in Setting the Input Sensitivity and Setting the Gain 6 POWER SWITCH Turns the power on The blue indicator LED in the Logo badge on the front of the speaker serves also as a power on indicator 7 LINE SELECT Allows user selection of different country voltage ratings 8 AC LINE INPUT Standard IEC AC line input connector Real Panel Indicators 4 SIGNAL Signal indicator The green LED illuminates when a signal is present 5 LIMITER The red LED illuminates when the system overload protection is active If the input signal is too strong or the LEVEL control set too high the red LED will illuminate constantly Illumination of the LIMITER LED can be avoided by reducing the input level or turning down the LEVEL control to the point at which the red LED occasionally flickers PRX612M LIMITER Red LED indicates limiter in operation Connectors 9 XLR Female balanced XLR and 1 4 inch phone jack combo balanced input connector 10 XLR Male balanced XLR output connector This connector provides a full range signal which can be daisy chained to
36. s 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 WATCH FOR THESE SYMBOLS CAUTION WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK RISK OF FIRE OR ELECTRIC SHOCK DO NOT OPEN DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR The lightning flash with arrowhead symbol within The exclamation point within an equilateral triangle is an equilateral triangle is intended to alert the intended to alert the user to the presence of important user to the presence of uninsulated Dangerous operating and maintenance Servicing instructions in Voltage within the products enclosure that may be the literature accompanying the product of sufficient magnitude to consitute a risk of electric shock to persons 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 10 cm and 20 cm EN 55022 2003 Limits and Methods of Measurement of Radio
37. sors the PRX500 Series we ve also reduced the size and weight making these speakers truly portable and ultimately manageable Powered Speaker Systems A Closed System Architecture There is much confusion these days in the world of powered speakers especially when it comes to defining performance What constitutes exceptional performance Is it wattage ratings driver dimensions cabinet dimensions sound pressure levels tone It can get very confusing when you re confronted with a barrage of specifications from manufacturers all claiming to have the best performance A self powered speaker is really a system unto itself it s a closed system Unlike a passive speaker amplifier and signal processing chain where components can be interchanged or upgraded the powered speaker is a closed system that operates as a single unit Properly designed all of the components are chosen to work together complementing each other to create an environment where the whole is greater than the sum of the parts The cabinet volume needs to support the mechanical performance of the speaker which is impacted by the power amplifier s performance which if there is Digital Signal Processing on the input is affected by the DSP programming Some manufacturers simply stick an amplifier on an existing speaker cabinet and call it a powered speaker technically correct while more experienced companies like JBL spend hundreds of man hours optimizing the r
38. st 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 amp 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
39. 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 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 amp doctype 3 Safe Rig
40. 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 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
41. the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufacturer 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 Unplug this apparatus during lightning storms or when unused for long periods of time 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 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 To completely disconnect this apparatus from the AC mains disconnect the power supply cord plug from the AC receptacle WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE Do not expose this equipment to dripping or splashin
42. uspension Points and 1 x M10 Pull Back Point Integrated handle with backing cup Obsidian DuraFlex finish Powder coated Obsidian 16 gauge perforated steel with acoustically transparent black cloth backing Balanced XLR 1 4 inch combo jack with XLR loop through 592 mm x 353 mm x 340 mm 23 3 in x 13 9 in x 13 4 in 15 6 kg 34 5 Ib 19 2 kg 42 5 Ib PRX615M System Spec Amplifier Speaker System Type Maximum SPL Output Frequency Range 10 dB Full Range Monitor vertical orientation Monitor monitor orientation Frequency Response 3 dB Full Range Monitor vertical orientation Monitor monitor orientation Input Connectors Input Impedance Signal indicators EQ Dynamic Control Input Crossover Modes Crossover Frequency Design Power Rating LF Driver HF Driver Coverage Pattern Directivity Index DI Directivity Factor Q Enclosure Suspension Mounting Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight Gross Weight Self powered 15 two way bass reflex 135 dB Full Range peak 134 dB Monitor peak 45 Hz 19 kHz 55 Hz 19 kHz 48 Hz 20 kHz 54 Hz 18 kHz 75 Hz 18 5 kHz 60 Hz 18kHz Balanced XLR 1 4 inch combo jack with XLR loop through 20K Ohms balanced 10K Ohms unbalanced Limit Red LED indicates limiter active condition Signal Green LED indicates signal present Presets for use in Main a
43. ween subwoofer and the full range speaker and deliver the Strongest perceived bass response at the listening position This is especially useful when the subwoofer is placed at a different distance from the listening position than the full range speakers If the bass response seems weak try using this switch to invert the polarity e LJ ae 242 2 HIGH PASS FILTER HPF SWITCH ro eo This switch affects the signal sent to the OUTPUT A amp B connectors a THRU The INPUT A signal is passed directly to the OUTPUT A POLARITY PASS tevet outeur impur pur oureur connector and the INPUT B signal is passed directly to the OUTPUT B connector b HPF The INPUT A signal is first passed through a 120 Hz 6 dB High Pass Filter HPF before being sent to the OUTPUT A connector The INPUT B signal is first passed through another 120 Hz 6 dB High Pass Filter HPF before being sent to OUTPUT B connector 3 LIMIT INDICATOR 9 The LIMIT LED Red illuminates to indicate that the system is JBL approaching clipping The threshold for this is actually about 2 dB below clipping An occasional flickering of this on the loudest peaks JBL PROFESSIONAL Northridge CA USA HA Harman Intemational Company is acceptable If this LED is ON for more than the duration of brief dynamic peaks the system is being over driven Continuously over driving the system will result in unpleasant and fatiguing distortion and may lead to premature failure
44. x to convert your unbalanced equipment output to a balanced output Review the Owner s Manual for your system setup and adjust controls as needed Input sensitivity gain Move the speakers so they do not point to the microphone s pickup pattern Locate the feedback frequency and reduce it using the mixer EQ or an external equalizer Reduce the gain at the mixer and move the microphone closer to the sound source Switch the EQ switch to flat 32 CONTACT INFORMATION Mailing Address JBL Professional 8500 Balboa Blvd Northridge CA 91329 Shipping Address JBL Professional 8500 Balboa Blvd Dock 15 Northridge CA 91329 Do not return product to this address without first obtaining prior authorization from JBL Customer Service Monday through Friday 8 00am 5 00pm Pacific Coast Time In the U S A 800 8JBLPRO 800 852 5776 www jblproservice com On The World Wide Web www jblpro com Professional Contacts Outside The USA Contact the JBL Professional Distributor in your area A complete list of JBL Professional international distributors is provided at our U S A website www jblpro com Product Registration Register your product online at www jblpro com registration 33 WARRANTY INFORMATION The JBL Limited Warranty on professional loudspeaker products except for enclosures remains in effect for five years from the date of the first consumer purchase JBL amplifiers
45. yment of shipping charges is discussed in the next section of this warranty How To Obtain Warranty Performance If your JBL product ever needs service write or telephone us at JBL Incorporated Attn Customer Service Department 8500 Balboa Boulevard PO Box 2200 Northridge California 91329 818 893 8411 We may direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair Either way you ll need to present the original bill of sale to establish the date of purchase Please do not ship your JBL product to the factory without prior authorization If transportation of your JBL product presents any unusual difficulties please advise us and we may make special arrangements with you Otherwise you are responsible for transporting your product for repair or arranging for its transportation and for payment of any initial shipping charges However we will pay the return shipping charges if repairs are covered by the warranty Limitation Of Implied Warranties ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY EXCLUSION OF CERTAIN DAMAGES JBL S LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT AT OUR OPTION OF ANY DEFECTIVE PRODUCT AND SHALL NOT INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND OR DO NOT ALLOW THE EXCLUSIO
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