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S-Series
S-2
Operation Manual
S-3
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The info
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S-Series Power Amplifiers Important Safety Instructions 1) Read these instructions. 15) WARNING: TO REDUCE THE RISK OF FIRE IMPORTANT 2) Keep these instructions. OR ELECTRIC SHOCK, DO NOT EXPOSE 3) Heed all warnings. THIS APPARATUS TO RAIN OR MOISTURE. S Series amplifiers require Class 2 output wiring. 4) Follow all instructions. 16) DO NOT EXPOSE TO DRIPPING OR SPLASH- 5) Do not use this apparatus near water. ING. DO NOT PLACE OBJECTS FILLED WITH 6) Clean only with a dry cloth. LIQUID, SUCH
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S-Series Power Amplifiers Crown International, Inc. DECLARATION of CONFORMITY Technical Construction File Route FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield Issued By: Crown International, Inc. 574-294-8289 1718 W. Mishawaka Road swhitfield@crownintl.com Elkhart, Indiana 46517 U.S.A. European Representative's Name and Address: Nick Owen 35, Bassets Field Thornhill Cardiff. South Glamorgen Equipment Type: Commercial Audio Power Amplifiers CF14 9
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S-Series Power Amplifiers Table of Contents 4.1.1 Bias Servo ..............................................................15 Important Safety Instructions ....................................................... 2 4.1.2 Fault .......................................................................15 Declaration of Conformity ........................................................... 3 4.1.3 Ultrasonic and Radio Frequency Protection ............15 1 Welcome ...
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S-Series Power Amplifiers � Versatile; handles a wide range of speaker 1.2 How to Use This Manual 1 Welcome impedances and outputs. This manual provides you with the necessary information to safely and correctly setup and ® � Advanced protection circuitry guards Crown S-Series amplifiers provide profes- operate your amplifier. It does not cover every against shorted outputs, open circuits, DC, sional audio amplification for a wide range of aspect of installation, setup or operation that
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S-Series Power Amplifiers 2 Setup 2.3 Ensure Proper Cooling 2.1 Unpack Your Amplifier 2.2 Install Your Amplifier Please unpack and inspect your amplifier for CAUTION: Before you begin, make sure When using an equipment rack, mount units directly on top of each other. Close any open any damage that may have occurred during your amplifier is disconnected from the transit. If damage is found, notify the transpor- power source, with power switch in the spaces in rack with blank panels. DO NOT ta
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S-Series Power Amplifiers 2.4 Choose Input Wire 2 Setup and Connectors You have three choices of input connectors: 1/4-inch (6.35-mm) phone, 3-pin XLR, or barrier strip. You can also use either balanced or unbalanced wiring. Figure 2.3 shows balanced connector pin assignments for XLR and phone. Figure 2.4 shows unbalanced connector pin assignments for XLR and phone. Figure 2.5 shows barrier strip input wiring for a balanced signal. Both channels should be wired using a common center term
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S-Series Power Amplifiers 2 Setup 2.5 Choose Output Wire and Con- nectors Crown recommends using pre-built or profes- sionally wired, high-quality, two- or four-con- ductor, heavy gauge speaker wires. They should be terminated with Neutrik Speakon NL4FC con- nectors (Figure 2.6) at one end and appropriate connectors to fit your speakers at the other end. ® ® If your S-Series amplifier came equipped with Figure 2.6 Neutrik Speakon Connector the CEAS1 (barrier strip) or CEAS2 (5-way bind- ing
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S-Series Power Amplifiers 2 Setup 2.6 Wire Your System 2.6.1 Stereo Mode Make sure the amplifier is turned off and the level controls are turned down before you wire the system. Typical input and output wiring is shown in Figure 2.9. INPUTS: Connect input wiring for each channel. OUTPUTS: Maintain proper polarity (+/–) on output connectors. Connect Channel-1 positive (+) speaker load to Channel-1 positive terminal of amp; repeat for negative (–). Repeat each channel wiring as for Channel
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S-Series Power Amplifiers 2 Setup 2.6.3 Bridge-Mono Mode Make sure the amplifier is turned off and the level controls are turned down before you wire the system. Typical input and output wiring is shown in Figure 2.11. INPUTS: Connect input wiring to CH 1. OUTPUTS: Connect the speaker across the posi- tive (+) output terminals. Do not use the negative (–) terminals when the amplifier is being oper- ated in Bridge-Mono mode. Refer to Section 2.5 for output connector pin assignments. Make su
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S-Series Power Amplifiers 2 Setup 2.7 Input Sensitivity Switch 2.8 Connect to AC Mains A two-position Input Sensitivity switch is located Connect your amplifier to the AC mains power on the back panel near the input connectors source (power outlet) with the supplied AC power (Figure 2.12). Your amplifier is shipped from the cordset. First, connect the IEC end of the cordset to factory with this switch set to the 1.4V position. the IEC connector on the amplifier; then, plug the At this sett
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S-Series Power Amplifiers 3 Operation 3.1 Precautions 4. WARNING: Never connect the output to a power supply, battery or power main. Your amplifier is protected from internal and exter- Electrical shock may result. nal faults, but you should still take the following precautions for optimum performance and safety: 5. Tampering with the circuitry, or making unau- thorized circuit changes may be hazardous and 1. Before use, your amplifier first must be config- invalidates all agency listings. u
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S-Series Power Amplifiers 3.2 Controls, Indicators and Connectors 3 Operation Figure 3.1 Controls, Indicators & Connectors Operation Manual page 13
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S-Series Power Amplifiers 3 Operation 3.3 Front Panel Controls and tion on fault monitoring and suggestions for signal- 3.4 Back Panel Controls and Connectors Indicators ling device circuity. Power Switch Input Sensitivity Switch Some fault conditions may cause the output of the This two-position Input Sensitivity switch is located The power switch turns the amplifier on or off. amplifier to be muted. near the input connectors. It lets you select between Note that dangerous voltages may sti
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S-Series Power Amplifiers 4 Advanced Features and Options NOTE: For detailed information about 4.1.4 Drive Protection 4.2 Advanced Features these Crown amplifier features, please This system temporarily removes output drive consult the Crown Amplifier Application 4.2.1 Crown SST Modules to protect the amplifier and its loads. Drive pro- Guide, available on the Crown website tection can be activated in two situations. First, Crown optional SST (System Solution Topolo- at www.crownaudio.com.
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S-Series Power Amplifiers 4 Advanced Features and Options SST-SBSC-3632T SST-4622 This is a custom three-channel crossover net- See Figure 4.1. This is a custom two-channel work with CD-horn equalization and summed crossover network with equalization specifically ® low-frequency output specifically designed for designed for use with JBL model 4622 ® ® ® ScreenArray cinema speaker systems use with JBL model 3632T ScreenArray cinema speaker systems installed in cinemas, installed in cinemas,
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S-Series Power Amplifiers 4 Advanced Features and Options 4.2.2 Fault Monitoring The Fault (RJ-11) jack, which looks like a telephone jack, is located on the back of your S-Series ampli- fier (Figure 4.2). It gives you an easy way to remotely monitor the amplifier’s fault status. To set up a circuit that will cause an LED to light whenever a fault status occurs, you can simply use the sug- gested circuit shown in Figure 4.3. When using this circuit, the LED will glow under any of these con
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S-Series Power Amplifiers 4 Advanced Features and Options 4.3 Options To use, simply pull off the control knobs from the front of the amp, and slip the hole plugs into place 4.3.1 Accessories (see Figure 4.7). The plugs should press easily into CE HANDLES position with light force. Once in place, the plugs Handles complement your amplifier’s appearance, will help to avoid most accidental or intentional aid in transportation, and facilitate rack mounting tampering (some situations may requi
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S-Series Power Amplifiers 5 Principles of Operation For the sake of simplicity, only channel one of The predrivers provide enough signal to acti- reach its maximum safe temperature, an inter- nal thermal switch opens and the fan circuit the amplifier is described. vate the drivers, which together operate in the class AB range. For the major output current turns on full speed to quickly cool down the Signal is presented to the S amplifier through amplifier. It also disconnects the load via th
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S-Series Power Amplifiers 5 Principles of Operation + HI-VOLTAGE BOOTSTRAP TURN-ON DELAY CURRENT SOURCE HEATSINK TRIPLE-DEEP COMPRESSOR TO CLIP TEMPERATURE DARLINGTON CONTROL INDICATOR NPN POSITIVE OUTPUT STAGE + OUTPUT TDVI BIAS BIAS BIAS BIAS BIAS BIAS CONTROL LIMITER OUTPUT Figure 5.1 TRIPLE-DEEP S-Series DARLINGTON DC NPN NEGATIVE PROTECT Amplifier Block TRANSLATOR LVA BALANCED OUTPUT STAGE Diagram INPUTS BUFFER (Shown with ERROR VARIABLE BALANCE AMP HEATSINK Standard Input GAIN STAGE –VC
