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CTs Multi-Channel Series
CTs 4200
Operation Manual
CTs 8200
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, operatio
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CTs Multi-Channel Power Amplifiers Important Safety Instructions 1) Read these instructions. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICE- 2) Keep these instructions. ABLE PARTS INSIDE. REFER SERVICING TO 3) Heed all warnings. QUALIFIED SERVICE PERSONNEL. 4) Follow all instructions. 5) Do not use this apparatus near water. Do not À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ expose to dripping or splashing. Do not place PAS LES COUVERCLES. IL N’Y A PAS DES PAR-
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CTs Multi-Channel Power Amplifiers Crown International, Inc. DECLARATION of CONFORMITY 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 19 Clos Nant Coslech Pontprennau Cardiff CF23 8ND United Kingdom Equipment Type: Commercial Audio Power Amplifiers Family Name: CTs Model Names: CTs 4200A, CTs 8200A
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CTs Multi-Channel Power Amplifiers Important Safety Instructions .......................................................2 5.1.3 Fault Isolation Topology (FIT) ................................14 Declaration of Conformity ............................................................3 5.1.4 35-Hz High-Pass Filter ...........................................14 1 Welcome ..................................................... 5 5.1.5 AC Under-/Over-Voltage Protection ....
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CTs Multi-Channel Power Amplifiers CTs 4200 Maximum Average Power in watts with 0.1% THD. Dual 4 Channels Driven 1 kHz 20 Hz–20 kHz 4-ohm (per ch.) 260W 215W 8-ohm (per ch.) 200W 190W 70V (per ch.) 220W 220W* 1 Channel Driven 1 kHz 20 Hz–20 kHz 4-ohm (per ch.) 270W 225W 8-ohm (per ch.) 220W 210W * 70V (per ch.) 250W 245W Bridge-Mono 2 Channel-Pairs Driven 1 kHz 20 Hz–20 kHz 8-ohm (per ch. pair) 520W 430W 16-ohm (per ch. pair) 400W 380W * 100V (per ch. pair) 220W 220W • Continuously-variable-spee
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CTs Multi-Channel Power Amplifiers 3 Setup 3.1 Unpack Your Amplifier 3.2 Install Your Amplifier 3.3 Ensure Proper Cooling When using an equipment rack, mount units 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 directly on top of each other. Close any open transit. If damage is found, notify the transpor- power source, with the power switch in spaces in rack with blank panels. D
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CTs Multi-Channel Power Amplifiers 3 Setup Figure 3.3 Balanced Input 3.4 Choose Input Wire Connector Wiring and Connectors Figure 3.3 shows connector pin assignments for balanced wiring, and Figure 3.4 shows connector pin assignments for unbalanced wiring. See the Crown Amplifier Appli- When possible, use balanced wiring for signal input, which provides better cation Guide, available online at rejection of unwanted noise and hum. For more information, refer to the www.crownaudio.com, for
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CTs Multi-Channel Power Amplifiers 3 Setup See the Crown Amplifier Appli- cation Guide, available online at www.crownaudio.com, for pin 3.6 Wire Your System assignments for commonly CAUTION: Never change the position of used connector types. BRIDGE DUAL DUAL the Mode Switch while the amplifier power is on. See Section 5.2.2 for more CH 2 CH 1 information. Output panel 3.6.1 Dual 8/4 Mode shown with Typical input and output wiring, along with level touch-proof control and Mode Switch s
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CTs Multi-Channel Power Amplifiers 3 Setup See the Crown Amplifier Appli- cation Guide, available online at www.crownaudio.com, for pin 3.6.3 Bridge-Mono 16/8 Mode BRIDGE assignments for commonly CAUTION: Never change the position of DUAL DUAL used connector types. the Mode Switch while the amplifier CH 2 CH 1 power is on. See Section 5.2.2 for more Output panel information. shown with Typical input and output wiring, along with level touch-proof control and Mode Switch settings are sh
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CTs Multi-Channel Power Amplifiers 3 Setup 3.7 Connect to AC Mains 3.8 Startup Procedure Connect your amplifier to the AC mains power Use the following procedure when first turning on source (power outlet) with the supplied AC power your amplifier: cordset. First, connect the IEC end of the cordset to 1. Turn down the level of your audio source. the IEC connector on the amplifier; then, plug the other end of the cordset to the AC mains. 2. Turn down the level controls of the amplifier. WARNI
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CTs Multi-Channel Power Amplifiers 4 Operation 4. WARNING: Never connect the output 4.1 Precautions to a power supply, battery or power Your amplifier is protected from internal and main. Electrical shock may result. external faults, but you should still take the fol- lowing precautions for optimum performance and 5. Tampering with the circuitry, or making safety: unauthorized circuit changes may be hazard- ous and invalidates all agency listings, and 1. Before use, your amplifier first mu
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CTs Multi-Channel Power Amplifiers 4 Operation 4.2 Front Panel Controls C. Signal Indicator F. Fault Indicator and Indicators Green LED, one per channel, illuminates to Red LED, one per channel, illuminates indicate the presence of input signals when the amplifier output channel has Note: CTs 8200 is shown. Some CTs above –40 dBu. stopped operating. 4200 features are in different locations. D. Clip Indicator G. Ventilation Grille A. Bridge Mode Indicator Red LED, one per channel, illuminates
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CTs Multi-Channel Power Amplifiers 4 Operation 4.3 Back Panel Controls M. Accessory Panel P. Mode Switch and Connectors CTs 4200: Accepts an optional IQ-MC4A or Used on each consecutive pair of channels, this VCA-MC4A module. four-position switch is used to select the ampli- Note: CTs 8200 is shown. Some CTs fier’s mode of operation: Dual 8/4 ohms, CTs 8200: Accepts an optional IQ-MC8 or 4200 features are in different locations. Dual 70V, Bridge-Mono 16/8 ohms, and VCA-MC8 module (explained
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CTs Multi-Channel Power Amplifiers 5 Advanced Features and Options 5.1.4 35-Hz High-Pass Filter NOTE: For more information about these Crown 5.2 Advanced Features amplifier features, please visit the Crown web- A fixed 35-Hz (70-Hz in CTs 4200) high-pass filter per 5.2.1 Switching Power Supply site at www.crownaudio.com. channel pair is automatically inserted when the mode Crown’s new Switching Power Supply minimizes the switch is set to either of the constant-voltage settings. 5.1 Protecti
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CTs Multi-Channel Power Amplifiers 5 Advanced Features and Options 5.2.4 Channel Level Control ATTENUATION in dB The signal level for each input can be attenu- ated accurately by adjusting the 21-step Level Detent 4/8 Ohm 70V 100V Control (see Section 4.2). Figure 5.2 shows the 0 (full CCW) -68.31 -72.90 -71.02 amount of attenuation in dB for each detent. 1 -67.54 -72.06 -70.26 Note: Attenuation per detent varies with operat- ing mode since gain varies with operating 2 -32.23 -36.61 -34.90 m
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CTs Multi-Channel Power Amplifiers 5 Advanced Features and Options 5.3 Options Wall-Mount level control panels for use with Choosing the Right Module VCA module: To order accessory modules for your amplifier, Below are some available options. For current please refer to the model tag (located on the back options, visit the Crown website at www.crownau- 1-VCAP: See Figure 5.5. Used in conjunction with panel of the amplifier) for your amplifier’s specific dio.com. a VCA-MC module, this is a
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CTs Multi-Channel Power Amplifiers 6 Troubleshooting CONDITION: Power indicator is off. CONDITION: Fault indicator is on. POSSIBLE REASON POSSIBLE REASON: • The amplifier has lost AC power. • The amplifier channel has stopped oper- ating. Return the unit to an authorized • The amplifier’s Power switch is off. Crown Service Center. • The amplifier is not plugged into the power receptacle. • The amplifier output level is so high that the power supply fuse has blown. Verify that input levels an
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CTs Multi-Channel Power Amplifiers 6 Troubleshooting CONDITION: No sound, even though CONDITION: Thermal indicator is the amp has power. Power LED is on flashing. without flashing and the amp is receiving an POSSIBLE REASON: input signal. Signal indicator is flashing. • The amplifier has become too hot for safe operation. Check for loads less than 2 ohms, and for excessive input levels. • Speakers not connected. Check for proper ventilation and proper • Open circuit due to speaker failu
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CTs Multi-Channel Power Amplifiers 7 Specifications (in watts, 0.1% THD) 120VAC, 60 Hz units CTs 4200: MINIMUM GUARANTEED POWER Dual Mode Channels Driven 4 2 1 1 kHz 20 Hz - 20 kHz 1 kHz 1 kHz 20 Hz - 20 kHz 4 Ohm 260 215 270 270 225 8 Ohm 200 190 210 220 210 Figure 7.1 70V (25 Ohm) at 0.1% THD 220 220* 240 250 245* CTs 4200 Bridge-Mono Mode Power Chart Channel Pairs Driven 21 1 kHz 20 Hz - 20 kHz 1 kHz 20 Hz - 20 kHz 8 Ohm 520 430 560 450 16 Ohm 400 380 440 420 100V (50 Ohm) at 0.1% THD 220
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CTs Multi-Channel Power Amplifiers The following specifications apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise specified. 7 Specifications Performance CTs 4200 CTs 8200 Frequency Response (at 1 wa tt, 20 Hz - 20 kHz) ± 0.5 dB ± 0.5 dB Phase Response (at 1 watt, 10 Hz - 20 kHz) ± 35° ± 35° Signal to Noise Ratio below rated power (20 Hz to 20 kHz) 100 dB unweighted 100 dB unweighted Total Harmonic Distortion (THD) at 1 watt, from 20 Hz to 20 kHz < 0.05% < 0.05% Int
