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CH and CL Series
CH1
CH2
CH4
Operation Manual
CL1
CL2
CL4
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
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CH and CL Series Power Amplifiers Important Safety Instructions IMPORTANT 1) Read these instructions. 15) WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE 2) Keep these instructions. Commercial Audio Series amplifiers require Class 2 3) Heed all warnings. THIS APPARATUS TO RAIN OR MOISTURE. output wiring. 4) Follow all instructions. 16) DO NOT EXPOSE TO DRIPPING OR SPLASH- ING. DO NOT PLACE OBJECTS FILLED WITH 5) Do not use this apparatus near water. MAGNETIC FIELD 6) Cl
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CH and CL Series Power Amplifiers Crown International, Inc. DECLARATION of CONFORMITY Sue Whitfield Issued By: Crown International, Inc. FOR COMPLIANCE QUESTIONS ONLY: 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 CF14 9UG United Kingdom Equipment Type: Commercial Audio Power Amplifiers Family N
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CH and CL Series Power Amplifiers Table of Contents Important Safety Instructions .......................................................2 4 Advanced Features and Options .............................. 19 Declaration of Conformity ............................................................3 4.1 Protection Systems ..................................................................19 1 Welcome ..................................................... 5 4.1.1 Power Circuit Breaker .....
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CH and CL Series Power Amplifiers Output Power Output Power Output Power at 1 kHz at rated THD; Stereo mode, per channel with both channels driven. Output Power at 1 kHz at rated THD; Stereo mode, per channel with both channels driven. STEREO MODE BRIDGE MODE STEREO MODE BRIDGE MODE 2 Ohms 4 Ohms 8 Ohms 70V 4 Ohms 8 Ohms 140V CH1 450W 275W 300W 900W 600W CH2 660W 400W 600W
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CH and CL Series Power Amplifiers 2 Setup 2.1 Unpack Your Amplifier 2.2 Install Your Amplifier 2.3 Ensure Proper Cooling When using an equipment rack, close any open Please unpack and inspect your amplifier for CAUTION: Before you begin, make sure any damage that may have occurred during your amplifier is disconnected from the spaces in rack with blank panels. DO NOT transit. If damage is found, notify the transpor- power source, with the power switch in block front or rear air vents. The sid
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CH and CL Series Power Amplifiers 2 Setup 2.4 Choose Input Wire 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 bal- anced or unbalanced wiring. Figure 2.3 shows balanced connector pin assignments for XLR and phone. Figure 2.4 shows unbalanced connector pin assign- ments for XLR and phone. Figure 2.5 shows barrier strip input wiring for a balanced signal. Both channels should be wired using a common cen
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CH and CL Series Power Amplifiers 2 Setup 2.6 Switch Settings CH Series amplifiers only: Select 4/8 ohm WARNING: The two Output Operation or 70V operation as appropriate for your appli- switches must be set to identical posi- Proper wiring depends on how you configure cation and your amplifier. Select output opera- tions (4/8 ohm or 70V mode) when oper- your amplifier. The CH and CL Series offer vari- tion by sliding the recessed Output Operation ating in Bridge mode. Never change ous modes o
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CH and CL Series Power Amplifiers 2 Setup 2.7 Wire Your System 8 or 4 ohms 2.7.1 Models CH1 & CH2 Stereo Mode See Figure 2.10. In this example, Channel 1 is wired to a 4/8 ohm load and Channel 2 is wired to a 70V load. Make sure the Mode switch is set to the “Stereo” position. Set the Channel Operation Switch to 4/8 ohms on Channel1, and to 70V on Channel 2. INPUTS: Connect input wiring for each channel. OUTPUTS: Maintain proper polarity (+/–) on output connectors. � Connect Channel 1 posi
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CH and CL Series Power Amplifiers 2 Setup 8 or 4 ohms 2.7.3 Model CH4 Stereo Mode See Figure 2.12. In this example, Channel 1 is wired to a 4/8 ohm load and Channel 2 is wired 70 V to a 70V load. Make sure the Mode switch is set to the “Stereo” position. Set the Channel Operation Switch to 4/8 ohms on Channel1, and to 70V on Channel 2. INPUTS: Connect input wiring for each channel. OUTPUTS: � Connect Channel 1 positive (+) speaker lead to Channel 1 positive (+) terminal of amp. � Connect C
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CH and CL Series Power Amplifiers 2 Setup 2.7.5. Models CL1 & CL2 Stereo Mode See Figure 2.14. In this example, Channel 1 and Mixer Channel 2 are wired to 4/8-ohm speaker loads. Make sure the Mode switch is set to the “Stereo” position. INPUTS: Connect input wiring for each channel. OUTPUTS: � Connect Channel 1 positive (+) speaker lead to Channel 1 positive (+) terminal of amp. � Connect Channel 1 negative (–) speaker lead to Channel 1 negative (–) output terminal of amp. � Repeat simil
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CH and CL Series Power Amplifiers 2 Setup 2.7.7. Model CL4 Stereo Mode See Figure 2.16. In this example, Channel 1 and Channel 2 are wired to 4/8-ohm speaker loads. Make sure the Mode switch is set to the “Stereo” position. INPUTS: Connect input wiring for each channel. OUTPUTS: � Connect Channel 1 positive (+) speaker lead to Channel 1 positive (+) terminal of amp. � Connect Channel 1 negative (–) speaker lead to Channel 1 negative (–) output terminal of amp. � Repeat similarly for Chan
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CH and CL Series Power Amplifiers 2 Setup 2.7.9 All Models: How to Parallel the connector to Channel-2 XLR connector. CH4, CL4 2.9 Startup Procedure Inputs in Stereo Mode only: Using a stereo phone-to-phone cable, con- Use the following procedure when first turning on nect Channel 1 Combo connector to Channel 2 There are three ways to feed the same signal to each your amplifier: Combo connector. amplifier channel: 1. Turn down the level of your audio source. 1. Buy a “Y” cable. Plug the fema
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CH and CL Series Power Amplifiers 3 Operation 3.1 Precautions 4. WARNING: Never connect the output to Your amplifier is protected from internal and exter- a power supply, battery or power main. nal faults, but you should still take the following Electrical shock may result. precautions for optimum performance and safety: 5. Tampering with the circuitry, or making unau- 1. Before use, your amplifier first must be config- thorized circuit changes may be hazardous and ured for proper operation,
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CH and CL Series Power Amplifiers 3 Operation POWER FAULT FAULT CLIP CLIP SIGNAL SIGNAL Power Indicator “OFF” Position “ON” Position Power Switch Channel 1 Signal, Channel 2 Signal, Clip & Fault Indicators Clip & Fault Indicators Figure 3.1 CH and CL Series Front Panel Controls and Indicators Figure 3.2 Models CH1 & CH2 Back Panel Controls and Connectors (Shown with No-Touch Cover Removed) Operation Manual page 15
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CH and CL Series Power Amplifiers 3 Operation Figure 3.3 Model CH4 Back Panel Controls and Connectors (Shown with No-Touch Cover Removed) Figure 3.4 Models CL1 & CL2 Back Panel Controls and Connectors (Shown with No-Touch Cover Removed) page 16 Operation Manual
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CH and CL Series Power Amplifiers 3 Operation 3-Speed Fan-On-Demand Figure 3.5 Model CL4 Back Panel Controls and Connectors (Shown with No-Touch Cover Removed) Operation Manual page 17
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CH and CL Series Power Amplifiers 3 Operation 3.2 Indicators A two-position Output Operation switch The red Clip indicators turn on when distor- tion is audible in the amplifier output. (CH Series amplifiers only) allows the selection The front panel of a Contractor Series amplifier of either 4/8 ohm or 70V output from the ampli- has several helpful indicators (Figure 3.6). The The green Signal Presence Indicators fier. See Section 2 for more information about blue Power indicator shows th
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CH and CL Series Power Amplifiers 4 Advanced Features and Options NOTE: For detailed information about these With their superior efficiency, BCA amplifiers can 4.3.2 Crown SST Modules Crown amplifier features, please consult help to keep power requirements lower, while still Crown optional SST (System Solution Topologies) the Crown Amplifier Application Guide, providing excellent audio reproduction. And Crown modules were specially designed to improve the available on the Crown website at B
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CH and CL 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 ® ® ® use with JBL model 3632T ScreenArray ScreenArray cinema speaker systems cinema speaker systems installed in cinemas, installed in
