Owner`s Manual - HARMAN Professional
Contents
1. 21 C C 22 This manual does not include all of the details of design production or variation of the equipment Nor does it cover every pos sible situation which may arise during installation operation or maintenance The information provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred Trademark Notice JBL is registered trademark of JBL International CROWN and DRIVECORE are registered trademarks of Crown Audio Other trademarks are the property of their respective owners 2014 JBL Commercial 8760 South Sandy Parkway Sandy UT All Rights Reserved 2 IMPORTANT SAFETY INFORMATION CAUTION RISK OF ELECTRIC SHOCK DONOTOPEN ATTENTION nisouEDECHOCELECTRIQUE NEPAS OUVRIR WARNING roREbUCETHERISKOFFIREORELECTRIC SHOCKDONOTEXPOSETHISEQUIPMENTTORAINORMOISTURE he symbols shown above are internationally accepted symbols that warn of potential hazards with electrical products The light ning flash with arrow point in an equilateral triangle means that here are dangerous voltages present within the unit The exclama ion point in an equilateral triangle indicates that it is necessary for the user to refer to the owner s manual hese symbols warn that there are no user serviceabl2. COMMERCIALS CSA 1407 CSA 1807 CSA 11207 CSA 2407 CSA 2807 CSA 21207 Commercial Series Amplifier Operation Manual E commercia HARMAN Contents Important S alety Instr etlons ka 3 JBL DECLARATION OF CONFORMITY X 44c iia enne 5 ver 7 1li F l 7 1 2 Front Control Panels and Indicators 8 1 3 Rear Panel Controls and 9 PASE oC 2 1 Unpacking Your Amplifier 2 2 Installing Your Amplifier esses 2 3 Ensuring Proper Cooling 2 4 Choosing Input Wire and Connectors 2 22 2 14 2 5 Output Wiring 2 22 15 2 6 Wiring Your Audio SVStelTi 16 2 7 Connecting to AC MAINS ulace aid 17 2 8 Protecting 17 2 9 Startup Procedure OPE At OM acs M Pr Gel Precautions ande pudet eee 3 3 Rem te Vol me rnc k echa P Hee ER E EHE 19 3 4 Sl6eD me 19 40 IOUBIESHOOUNG cocer aptent endet pete pee etx tando opor 20 Appendix A Target Performance Specifications
3. Improper wiring can result in serious operating difficulties For information on wiring and configuration please consult the Setup section of this manual Use care when making connections selecting signal sources and controlling the output level Always be sure to have all levels at minimum when connecting or disconnecting audio sources from the inputs Failure to do so may cause the amplifier or speaker to go into a protection mode or even cause damage WARNING Never connect the output to a power supply battery or power main Electrical shock may result Tampering with the circuitry or making unauthorized circuit changes may be hazardous and invalidates all agency listings Do not operate the amplifier with the red Clip LEDs constantly flashing Do not overdrive the mixer which will cause clipped signal to be sent to the amplifier Such signals will be reproduced with extreme accuracy and loudspeaker damage may result Do not operate the amplifier with less than the rated load impedance Due to the amplifier s output protection such a configuration may result in premature clipping and speaker damage Use the amplifier in a well ventilated environment and do not use it in ambient temperature conditions in excess of 40 C Failure to do so will result in the auto disconnection from power supply and the overheat auto protection function will be activated The power indicator will become green and there will not be any audio sig
4. can use one of the following approaches Rack mount the amplifier with the rack mounting kit see Figure 2 2 2 e Stack amps without using a cabinet Rubber feet are included and can be attached onto the underside of the chassis For amplifier dimensions see Figure 2 2 1 e We recommend that any sensitive equipment be located at least 8 inches 20cm away from the amplifier 10 E ty HARMAN Figure 2 2 1 Dimensions en c o 0 o EZS EE 9g sume oo 69 L J 218 44 mm 8 6 in 303 4 mm 11 9 in Figure 2 2 2 Mounting Kit long angle bracket C 5 e flat bracket front angle bracket rear angle brackets 6 rear flat brackets 17 E Figure 2 2 8 Rack Mounting Two Units To install two units in your cabinet system refer to Figure 2 2 3 and follow the steps below 1 Align two modules side by side and upside down with the front panel towards the same direction 2 Connect them with the flat bracket using the screws provided 3 Attach the front angle brackets to each side of the front of the amplifier assem bly using the screws provided 4 Attach the rear flat brackets to each side of the rear of the amplifier assembly with the screws provided 5
5. maximum outputs Input Sensitivity 8 O Load 1 4Vaus Frequency Response 80 20Hz 20kHz 0 5dB Total Harmonic Distortion THD lt 05 Full rated power 20Hz 20kHz I Signal to Noise Ratio Ref rated output 22KHz BW A weighted 210008 Input Impedance nominal Euro Block 20 balanced RCA 50 Maximum Input Level 22dBu Norminal Crosstalk Ref rated power A weighted 1kHz gt 00 98 272 Bass P i Treble 10dB 10kHz each channel Nominal AC Line Voltages 100 240V 50 60 Hz Minimum Load Impedance Low Z Output 40 40 40 40 40 40 70V Output 1200 600 400 1200 600 400 100V Output 2400 1200 800 2400 1200 800 Operating Temperature Humidity 0 to 35 C Q 95 non condensing Storage Temperature 20 C to 85 C Dimensions amp Weight Net Weight preliminary estimate 6 3 Ib 6 9 Ib 6 9 Ib 7 5 b 8 816 8 8 Ib 2 8 kg 3 1 kg 3 1 kg 3 4 kg 4 0 kg 4 0 kg Dimensions Width 8 6 in 218 5 mm Depth 11 9 in 303 4 mm Height 1 7 in 43 3 mm Shipping Weight 9 3 Ib 9 9 Ib 9 9 Ib 10 5 Ib 11 8 Ib 11 8 Ib 4 2 kg 4 5 kg 4 5 kg 4 8 kg 5 3 kg 5 3 kg Note For AC power draw and thermal dissipation information please visit our website www jblcommercialproducts com 21 E HARMAN Appendix B Contact Information For additional information please consult JBL Professional Customer Service your system installer or retailer On The World Wide
6. E G AC Power Inlet Detachable IEC B Amplifier Output Connector Hi Z Switch Enables the 70V and 100V outputs and activates the 70Hz high pass filter D Dual RCA Input Connector Stereo unbalanced sources will be summed together Ch2 4 E Audio Input Connector 3 pin Euro block connector balanced input Ch2 4 eep Disable Switch Disables the Sleep mode if you don t want the unit go nto sleep mode after 2 hours with no input signal G Remote volume connector RJ 45 style connector to connect to JBL CSR V control module 2 1 Unpacking Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit If damage is found notify the transportation company immediately Only you can initiate a claim for shipping damage We will be happy to help as needed Save the shipping carton as evidence of damage for the shipper s inspection We also recommend that you save all packing materials so you will have them if you ever need to transport the unit Never ship the unit without the factory pack WARNING Before you start to set up your amplifier make sure you read and observe the Important Safety Instructions found at the beginning of this manual 2 2 Installing Your Amplifier CAUTION Before you begin make sure your amplifier is disconnected from the power source and all level controls turned completely down counterclockwise To install the amplifier you
7. Install the assembly into the cabinet using the rack mount screws through the front angle brackets For details of installation in the chassis of the cabinet refer to the user guide of your cabinet 6 Align the rear angle brackets with the proper holes at the rear of the cabinet and attach using rack mount screws 7 With the rear angle brackets to the outside of the flat brackets attach them each using a screw passing through two washers the rear flat bracket and the rear angle bracket as shown in the figure 12 E commercia ty HARMAN Figure 2 2 4 Rack Mounting A Single Unit To install a single unit refer to Figure 2 2 4 and follow the steps below 1 Determine which side of the rack opening will be used for the amplifier and attach the long angle bracket to the other side at the front of the amplifier using the screws provided Attach one of the front angle brackets to the other side of the assembly as shown in the diagram with the screws provided Install the assembly into the cabinet using the rack mount screws through the front angle brackets For details of installation in the chassis of the cabinet refer to the user guide of your cabinet 13 E 2 3 Ensuring Proper Cooling When using an equipment rack keep a minimum space of 4 inches 10cm from the top surface of the unit Close any open spaces in the rack with blank panels DO NOT block any air vents The side walls of the rack should be a min
8. Web www jblcommercialproducts 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 22 ty HARMAN 23 JBL Commercial 8760 South Sandy Pkwy M Sandy UT 84070 USA 801 566 8800 by HARMAN Part Number 5040963 Issue 01 14
9. akers 125 wise to avoid clipping the amplifier signal Not only does clipping sound bad but it can damage high frequency drivers The built in clip limiter prevents clipping Also avoid sending strong subsonic signals to the amplifier High level low frequency signals from breath pops or dropped microphones can blow out drivers You can switch to the HI Z mode which in addition to switching in the output transformers for 70V and 100V speakers activates the high pass filter The filter prevents potentially damaging subsonic signals from going to the amplifier by eliminating signals below 7 2 2 9 Startup Procedure Use the following procedure when first turning on your amplifier 1 Turn down the level of your audio source Turn down the level controls of the amplifier Power up the amplifier The Power ring should change from green to blue Turn up the level of your audio source to an optimum level Turn up the Level controls on the amplifier until the desired loudness or power level is achieved ar N If you ever need to make any wiring or installation changes don t forget to disconnect the power cord 17 3 0 Operation 3 1 Precautions Your amplifier is protected from internal and external faults but you should still take the following precautions for optimum performance and safety 1 10 Before use your amplifier first must be configured for proper operation including input and output wiring hookup
10. ber The sleep mode can be disabled by activating the Sleep Disable switch on the rear panel 19 E 4 0 Troubleshooting CONDITION No power to the amplifier so that the power ring is not illuminated POSSIBLE REASON The amplifier is not plugged into the power receptacle CONDITION No sound or low sound POSSIBLE REASON The input signal is not present or at a very low level POSSIBLE REASON The Master Volume control is turned down POSSIBLE REASON A CSR V is connected and turned down POSSIBLE REASON The Hi Z switch is OFF while using the 70V or 100V outputs POSSIBLE REASON The power switch is OFF Note that while plugged in the amplifier will be in standby mode and the power ring will be green until the power switch is activated and the power ring will turn blue CONDITION Distorted sound POSSIBLE REASON Input signal level is too high Please turn down the input level controls Note that theamplifier should not be operated at a level that allows the clip indicator to be constantly ON POSSIBLE REASON Master Volume is too high 20 E commercia ty HARMAN Appendix A Target Performance Specifications Performance CSA 140Z CSA 1802Z CSA1120Z CSA 240Z CSA 2802 CSA 21202 Rated Power into 4 Q or 8 1kHz lt 0 5 THD 40W 80W 120W 40W 80W 120W Number of Output Channels il 1 1 2 2 2 Insertion Loss 70V amp 100V 2 1 dB
11. bility that the product to which this declaration relates is in conformity with the following standards Report No Description EN 55103 1 2009 EMC Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 1 Emissions EN 55103 1 2009 Magnetic Field Emissions Annex A 10cm and 20cm EN 61000 3 2 2005 Limits for Harmonic Current Emissions equipment input current less than or equal to 16A AMD1 2008 amp A2 2009 EN 61000 3 3 2008 Limitation of Voltage Fluctuations and Flicker in Low Voltage Supply systems Rated Current less than or equal to 16A EN 55022 2010 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE Radiated amp Conducted Class B Limits EN 55103 2 2009 EMC Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000 4 2 2009 Electrostatic Discharge Immunity Environment E2 Criteria B 4k V Contact 8k V Air Discharge 61000 4 3 2010 Radiated Radio Frequency EMC Immunity Environment E2 Criteria A 32 61000 4 4 2007 Electrical Fast Transient Burst Immunity Criteria B EN 61000 4 5 2006 Surge Immunity Criteria B 61000 4 6 2006 Immunity to Conducted Disturbances Induced by Radio Frequency Fields Criteria A 61000 4 11 2004 Voltage Dips Short Interruptions and Voltage Variation Safety Sta
12. e of a different line cord attachment plug or both depending on the available power source at installation Connect this equipment only to the power source indicated on the equipment rear panel To reduce the risk of fire or electric shock refer servicing to qualified service personnel or equivalent If connected to 240V supply a suitable CSA UL certified power cord shall be used for this supply IMPORTANT SAFETY INFORMATION U K MAINS PLUG WARNING A molded mains plug that has been cut off from the cord is unsafe Discard the mains plug at a suitable disposal facility NEVER UNDER ANY CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG INTO A 13 AMP POWER SOCKET Do not use the mains plug without the fuse cover in place Replacement fuse covers can be obtained from your local retailer Replacement fuses are 13 amps and MUST be ASTA approved to BS1362 ELECTROMAGNETIC COMPATIBILITY This device complies with part 15 of the FCC Rules and the Product specifications noted on the Declaration of Conformity Operation is subject to the following two conditions This device may not cause harmful interference and This device must accept any interference received including interference that may cause undesired operation Operation of this unit within significant electromagnetic fields should be avoided Use only shielded interconnecting cables If you want to dispose this product do not mix it w
13. e parts inside he unit Do not open the unit Do not attempt to service the unit yourself Refer all servicing to qualified personnel Opening the chassis for any reason will void the manufacturers warranty Do not get the unit wet If liquid is spilled on the unit shut it off immediately and take it to a dealer for service Disconnect the unit during storms to prevent damage SAFETY INSTRUCTIONS NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD WARNING THIS APPLIANCE SHALL BE CONNECTED TO A MAINS SOCKET OUTLET WITH A PROTECTIVE EARTHING CONNECTION The cores in the mains lead are colored in accordance with the following code GREEN and YELLOW Earth BLUE Neutral BROWN Live As colours of the cores in the mains lead of this appliance may not cor respond with the colored markings identifying the terminals in your plug proceed as follows The core which is colored green and yellow must be connected to the terminal in the plug marked with the letter E or with the earth symbol or colored green or green and yellow The core which is colored blue must be connected to the terminal marked N or colored black The core which is colored brown must be connected to the terminal marked L or colored red This equipment may require the use of a different line cord attachment plug or both depending on the available power source at installation If the attachment plug needs to be changed refer servicing t
14. edance Speakers should be driven using the appropriate 70V or 100V pin to speaker and the COM pin to speaker of the amplifier output connector The minimum impedance that can be driven from each output is provided in Appendix A Note that the HI Z switch must be ON in order to provide audio to the high impedance outputs WARNING Do not connect to both low impedance speakers and high impedance speakers from the same audio output channel 16 E 2 7 Connecting to AC Mains Connect your amplifier to the AC mains power source power outlet with the supplied AC power cord First connect the IEC end of the cord set to the IEC connector on the amplifier then plug the other end of the cord set to the AC mains When properly connected to a live power source the power ring should illuminate with a green color WARNING The third prong of this connector ground is an important safety feature Do not attempt to disable this ground connection by using an adapter or other methods Amplifiers don t create energy The AC mains voltage and current must be sufficient to deliver the power you expect You must operate your amplifier from an AC mains power source with not more than a 1096 variation above or below the specified line voltage and within the specified frequency range indicated on the back panel of the amplifier If you are unsure of the output voltage of your AC mains please consult your electrician 2 8 Protecting Your Spe
15. g rong The wide blade or third prong are provided for your safety If he provided plug does not fit your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from he apparatus Use only with the cart stand tripod bracket or table specified by the manufacture or sold with the apparatus When a cart Is used use caution when moving the cart apparatus combination to avoid injury rom tip over 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 POWER ON OFF SWITCH For products provided with a power switch the power switch DOES NOT break the connection from the mains MAINS DISCONNECT The plug shall remain readily operable For rack mount or installation where plug is not accessible an all pole mains switch with a contact separation of at least 3 mm in each pole nal be incorporated into the electrical installation of the rack or building FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE Replace fuse with same type and rating only MULTIPLE INPUT VOLTAGE This equipment may require the us
16. imum of 2 inches 5 cm from the amplifier sides The back of the rack should be open 2 4 Choosing Input Wire and Connectors We recommend using prebuilt or professionally wired balanced line two conductor plus shield 22 24 gauge cables to connect the amplifier balanced input by using the included Euro block connectors see Figure 2 4 Unbalanced lines may be used but may result in hum or RF noise very long cable runs You can also use RCA connectors to connect audio devices for example CD DVD player However do not use both Euro block and RCA audio input connectors on a single channel at the same time NOTE Custom wiring should only be performed by qualified personnel Figure 2 4 Input Wiring EUROBLOCK CONNECTORS RCA CONNECTORS BALANCED LINES UNBALANCED LINES MONO SUM h MONO SUM INPUT INPUT SOURCE SOURCE Note 7wo RCA connectors are provided for summing left and right channels from a stereo source Do not use both Euro block and RCA connectors concurrently for any single input channel 14 E HARMAN 2 5 Output Wiring and Connectors To drive distributed speaker systems designed to operate at 70V or 100V connect to the corresponding output terminals JBL recommends using prebuilt or professionally wired high quality two conductor heavy gauge speaker wire Speakers wires should be twisted cable if possible To prevent the possibility of short circuits the w
17. ires should be stripped back no greater than 6 mm 1 4 inch see Figure 2 5 Suggested below are guidelines to select the appropriate size of wire based on the distance from amplifier to speaker Check with local code as this may vary Distance Wire Size Up to 25 ft 7 6m 16AWG 26 40 ft 7 9 12 2m 14AWG Figure 2 5 Output Wiring Ex 1 100 707 100 70 7 100V 70V COM 8 Ohm Speaker 70V Speaker System 100V Speaker System 15 E ECT Figure 2 6 Wiring Audio System Professional audio system CSA 11202 CSR V ONLY 2 6 Wiring Your Audio System Typical input and output wirings are shown in Figure 2 6 INPUTS Connect input wiring for both channels using either the RCA or the Euro block input for each channel OUTPUTS You may use either low impedance or high impedance speakers Always be sure to maintain the proper polarity when wiring speakers Low Impedance Speakers should be driven using the pins of the amplifier output connector The minimum impedance an amplifier channel can drive is 4 Ohms Therefore you can connect up to four 16 Ohm speakers two 8 Ohm speakers or one 4 Ohm speaker to an amplifier output channel High Imp
18. ith gen eral household waste There is a separate collection system for used electronic products in accordance with legislation Hs requires proper treatment recovery and recycling Private household in the 25 member states of the EU in Switzerland and Norway may return their used electronic products free of charge to designated collection facilities or to a retailer if you purchase a similar new one For Countries not mentioned above please contact your local authorities for a correct method of disposal By doing so you will ensure that your disposed product undergoes the necessary treatment recovery and recycling and thus prevent potential negative effects on the environment and human health MAGNETIC FIELD CAUTION Do not locate sensitive high gain equipment such as preamplifiers or tape decks directly above or below the unit Because this amplifier has high power density it has a strong magnetic field which can induce hum into unshielded devices that are located nearby The field is strongest just above and below the unit If an equipment rack is used we recommend locating the amplifier s in the bottom of the rack and the preamplifier or other sensitive equipment at the top E EC DECLARATION OF CONFORMITY Brand JBL Equipment Type Commercial Audio Amplifiers Model names CSA 1407 CSA 1807 CSA 11207 CSA 2407 CSA 2807 CSA 21207 We Harman International declare under our sole responsi
19. nal coming out of the amplifier In this case turn down the volume to the minimum and the amplifier will soon resume working When the amplifier returns to normal temperature the power indicator will return to blue and you may turn the volume up to a safe level If the line voltage to the amplifier is too low the low voltage protection function will be activated The power light ring will change from blue to green CAUTION JBL is not liable for damage that results from overdriving other system components 18 E 3 2 Hi Z Switch When this switch is in the OFF position the amplifier is configured to drive low impedance speakers 4 Ohms minimum The Hi Z switch will switch in the built in output transformer allowing the unit to drive 70V or 100V speaker systems directly when connected to the appropriate output terminals As an added feature when driving the high impedance speakers the system automatically switches in a 70Hz high pass filter 3 3 Remote Volume Control Remote volume control can be implemented using a CSR V controller connected via an Ethernet cable to the RJ45 connector on the back panel For the CSA 240Z CSA 280Z and CSA 21207 there are two connectors one for each amplifier output 3 4 Sleep Mode To save energy the unit is designed to go into sleep mode after approximately 2 hours operating with no signal at any of the inputs Return of signal to any input will wake the unit from its slum
20. ndard IEC 60065 2001 7th Safety Requirements Audio Video and Similar Electronic Apparatus Ed AMD1 2005 amp AMD2 2010 Due to line current harmonics we recommend that you contact your supply authority before connection We certify that the product identified above conforms to the requirements of the EMC Council Directive 89 336 EEC as amended by 92 31 EEC and the Low Voltage Directive 73 23 EEC as amended by 93 68 EEC European Representative s Responsible for the technical Name and Address documentation is David Budge Wilson Zhou 10 Harvest Close Wilson Zhou harman com Yateley GU46 6YS United Kingdom y HARMAN E 1 0 Welcome The JBL Commercial Series of Amplifiers are a professional tool designed and built for Installed sound applications There are both single channel and two channel models They provide amplification with a choice of low impedance 70V or 100V outputs The product includes a rack mounting kit for installations to a cabinet The system can be easily expanded with additional JBL Commercial Series products Provisions are included for a remote volume control using the JBL CSR V control module 1 1 Features 1 or 2 channel outputs e Integrated Output Transformer to drive 70V 100V speaker systems e dealfor commercial and industrial use e System may be expanded by adding JBL Commercial Series Mixers and Mixer Amplifiers e Euro block type mic line input connecto
21. o qualified ser vice personnel who should refer to the table below The green yellow wire shall be connected directly to the units chassis WIRE COLOUR Normal Alt LIVE BROWN BLACK NEUTRAL BLUE WHITE E EARTH GND GREEN YEL GREEN CONDUCTOR WARNING If the ground is defeated certain fault conditions in the unit or in the system to which it is connected can result in full line voltage between chassis and earth ground Severe injury or death can then result if the chassis and earth ground are touched simultaneously WARNING FOR YOUR PROTECTION READ THE FOLLOWING KEEP THESE INSTRUCTIONS HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS THE APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING LIQUID AND NO OBJECT FILLED WITH LIQUID SUCH AS VASES SHALL BE PLACED ON THE APPARATUS CLEAN ONLY WITH A DRY CLOTH DO NOT BLOCK ANY OF THE 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 ONLY USE ATTACHMENTS ACCESSORIES SPECIFIED BY THE MANUFACTURER UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME Do not defeat the safety purpose of the polarized or grounding type lug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third groundin
22. rs and output connectors e Independent Bass and Treble controls for each output channel Remote volume control capability using JBL CSR V module and standard Ethernet cable e Ultilizes Crown s DriveCore technology providing excellent audio performance with high efficiency 3 Year Warranty Warranty is only valid within the United States of America For information on War ranty outside of the U S A please contact your local distributor E commercia HARMAN 1 2 Front Panel Controls and Indicators Figure 1 2 Front View of Single Channel Model A MASTER JBL 25 id O C D CSA 1120Z DRIVECORE Output Volume Control w Power Switch Illuminated ring around the output volume control will light green with signal presence while red indicates clipping i e the signal has reached the threshold of audible distortion D Tone Controls Bass 9 and Treble potentiometers on each output channel E Illuminated ring around the power switch Green indicates that the unit is connected to the AC mains and is in standby or sleep mode Blue indicates that the unit is on and in normal operating mode E 1 3 Rear Panel Controls and Connectors Figure 1 3 Hear View CSA 1120Z A B a 8 VI w o SR V ONLY INPUT 5 5 SHOCK GROUNDING OF THE CENTER PIN OF THE PLUG MUST BE MAINTAINED 5009986 MADE IN MALAYSIA
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