Summary of the content on the page No. 1
CTs 2-Channel Series
CTs 600
CTs 1200
Operation Manual
CTs 2000
CTs 3000
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 installat
Summary of the content on the page No. 2
CTs 2-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. À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ 6) Clean only with a dry cloth. PAS LES COUVERCLES. IL N’Y A PAS DES PAR- 7) Do not block any ventila
Summary of the content on the page No. 3
CTs 2-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 3000, CTs 2000, CT
Summary of the content on the page No. 4
CTs 2-Channel Power Amplifiers Table of Contents 5.1.3 Fault ..........................................................................15 Important Safety Instructions .......................................................... 2 5.1.4 High-Pass Filters ......................................................15 Declaration of Conformity .............................................................. 3 5.1.5 Low-Pass Filters ........................................
Summary of the content on the page No. 5
CTs 2-Channel Power Amplifiers * 20 Hz–20 kHz 20 Hz–20 kHz * CTs 600 Power CTs 2000 Power 2-ohm Dual (per ch.) 150W 2-ohm Dual (per ch.) 1000W 4-ohm Dual (per ch.) 300W 4-ohm Dual (per ch.) 1000W 8-ohm Dual (per ch.) 300W 8-ohm Dual (per ch.) 1000W 16-ohm Dual (per ch.) 300W 16-ohm Dual (per ch.) 625W 70V Dual (per ch.) 300W 70V Dual (per ch.) 1000W 4-ohm Bridge 300W 100V Dual (per ch.) 1000W 8-ohm Bridge 600W 4-ohm Bridge 2000W 16-ohm Bridge 600W 8-ohm Bridge 2000W 140V Bridge 600W 16-ohm Bridg
Summary of the content on the page No. 6
CTs 2-Channel Power Amplifiers 1 Welcome Features (continued from page 4) • Legendary Crown class I (BCA) and class 2 How to Use This ® AB+B (Multi-Mode ) output topologies offer the best in amplifier reliability. CTs • Switchable high-pass filter for each chan- Manual 600/1200 use Class AB+B; CTs 2000/ nel provides low-frequency roll off to elim- 3000 use Class I. inate step down transformer saturation This manual provides you with the necessary when used in distributed systems. informatio
Summary of the content on the page No. 7
CTs 2-Channel Power Amplifiers 3 Setup 3.1 Unpack Your Amplifier 3.2 Install Your Amplifier 3.3 Ensure Proper Cooling Please unpack and inspect your amplifier for CAUTION: Before you begin, make sure When using an equipment rack, mount units 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 power switch in the spaces in rack with blank panels. DO
Summary of the content on the page No. 8
CTs 2-Channel Power Amplifiers 3 Setup 3.4 Choose Input Wire and Connectors Figure 3.3 shows connector pin assignments for balanced wiring, and Figure 3.4 shows connec- Figure 3.3 tor pin assignments for unbalanced wiring. Balanced Input Connector Wiring NOTE: Custom wiring should only be per- formed by qualified personnel. 3.5 Choose Output Wire and Con- nectors A protective cover is installed over the barrier- strip output. Some models have a cover with two holes. To remove this type of c
Summary of the content on the page No. 9
CTs 2-Channel Power Amplifiers 3 Setup 3.6 Wire Your System 3.6.1 Dual 8/4/2 Mode Typical input and output wiring, along with Attenuator and Mode Switch settings are shown in Figures 3.6 and 3.7. Make sure the Mode switch is set to the “Dual” posi- tion when operating in Dual mode. INPUTS: Connect input wiring for each channel. The Y switch on the rear PIP panel can be used to parallel the channel inputs when only mono input signals are neces- sary. The amplifier’s channel outputs are s
Summary of the content on the page No. 10
CTs 2-Channel Power Amplifiers 3 Setup 3.6.3 Dual 70V/100V Mode Typical input and output wiring, along with Atten- uator and Mode Switch settings are shown in Fig- ures 3.10 and 3.11. Make sure the Mode switch is set to the “Dual” position when operating in Dual mode. INPUTS: Connect input wiring to both channels. OUTPUTS: In Dual Mode, the CTs 600/1200 can power 25/50/70V lines; the CTs 2000/3000 can power 25/50/70/100V lines. Connect each chan- nel of output connectors to speakers that
Summary of the content on the page No. 11
CTs 2-Channel Power Amplifiers 3 Setup 3.6.5 Dual Mode with “Y” Input See Figure 3.14. This configuration feeds a mono signal to both Channel 1 and Channel 2. In the example in Figure 3.14, Channel 1 is driving a low- impedance loudspeaker and Channel 2 is driving a loudspeaker with a 70V transformer. INPUTS: Connect the signal to the Channel 1 input. On the back panel, set the “Y” Input Switch to ON. OUTPUTS: Connect the Channel 1 speaker’s positive (+) lead to Channel 1 positive termina
Summary of the content on the page No. 12
CTs 2-Channel Power Amplifiers 3 Setup 3.7 Connect to AC Mains 4 Operation On the back panel, check whether your amplifier is labeled for 120V or 220-240V AC mains. Connect your amplifier 4.1 Precautions to the corresponding AC mains power source (power out- Your amplifier is protected from internal and external let) with the supplied AC power cordset. First, connect the faults, but you should still take the following precautions IEC end of the cordset to the IEC connector on the ampli- fo
Summary of the content on the page No. 13
CTs 2-Channel Power Amplifiers 4 Operation I. Power Indicator 4.2 Front Panel Controls Signal Indicators Blue LED indicates AC power has been and Indicators Three green LEDS per channel indicate the applied and is within the safe operating amplifier’s input and output signal levels. range of the power supply. The LED will From bottom to top the LEDs are: A. Fault Indicator flash when the AC line voltage is approxi- Red LED, one per channel, flashes when D. Signal: input signal is above
Summary of the content on the page No. 14
CTs 2-Channel Power Amplifiers 4 Operation 4.3 Back Panel Controls Sensitivity Switches The “Y” Input Switch also can be used to daisy-chain the signal to another amplifier. and Connectors. Behind the input panel are the Input Sensi- tivity Switches. One 3-position switch per See Section 3.6.5 for details. CTs 2000/3000 back panel is shown. channel selects various sensitivity set- CTs 600/1200 look slightly different near S. Input Connectors tings. See Section 5.2.4 for details and the Re
Summary of the content on the page No. 15
CTs 2-Channel Power Amplifiers 5 Advanced Features and Options NOTE: For detailed information about 5.1.3 Fault 5.1.9 Inrush Limiting these Crown amplifier features, please A soft-start circuit in the power supply mini- The amplifier will light the Fault LED if the consult the Crown Amplifier Application amplifier output stage stops operating. If this mizes the amplifier’s current draw during Guide, available on the Crown website power-on. happens, see Section 8 for servicing informa- at
Summary of the content on the page No. 16
CTs 2-Channel Power Amplifiers 5 Advanced Features and Options 5.2.4 Input Sensitivity Switches 5.3 Options T-170V: See Figure 5.3. This is an autoformer that To access the Input Sensitivity Switches, turn off the amplifier and remove the PIP2-BBY Input Panel. The switches are in the top surface of the cavity behind the allows 100V output from the CTs 600/1200, and allows other amplifiers without direct constant voltage Input Panel. One 3-position switch per channel selects among these sett
Summary of the content on the page No. 17
CTs 2-Channel Power Amplifiers 5 Advanced Features and Options 5.3.1 Nominal Attenuation Settings The signal level for each input can be attenuated accurately by adjusting the 21-step Level Control (see Section 4.3). Figure 5.5 shows the attenuation in dB for each detent. The setting of the input-sensitivity switch varies the actual attenation as shown. Detent 26 dB 4/8 ohm or 70/100V The accuracy of the attenuation varies with the setting. Expected 0 (full CW) 0.0 0.0 tolerances are: 10.5 0
Summary of the content on the page No. 18
CTs 2-Channel Power Amplifiers 6 Troubleshooting CONDITION: Power indicator is CONDITION: Fault indicator is off. flashing. POSSIBLE REASON POSSIBLE REASON: • The amplifier has lost AC power. • The amplifier channel has stopped operat- • The amplifier’s Power switch is off. ing. Refer the unit to an authorized Crown Service Center. • The amplifier is not plugged into the power receptacle. • The amplifier output level is so high that the power supply circuit breaker has tripped. Allow the
Summary of the content on the page No. 19
CTs 2-Channel Power Amplifiers 6 Troubleshooting CONDITION: Data indicator not flash- ing, even though PIP module is CONDITION: No sound, even though installed and host computer IQ soft- the amp has power. Power LED is on with- ware is active. out flashing and the amp is receiving an input sig- nal. Signal indicator is flashing. POSSIBLE REASON: POSSIBLE REASON: • Cable between computer and PIP module is broken or not connected. • Speakers not connected. Note: Data indicator flashes only whe
Summary of the content on the page No. 20
CTs 2-Channel Power Amplifiers 7 Specifications Minimum Guaranteed Power CTs 600 CTs 1200 CTs 2000 CTs 3000 (20 Hz - 20 kHz) Power at 0.1% THD Power at 0.1% THD Power at 0.35% THD Power at 0.35% THD 2-ohm Dual (per ch.) 150W 250W 1000W 1500W 4-ohm Dual (per ch.) 300W 600W 1000W 1500W 8-ohm Dual (per ch.) 300W 600W 1000W 1250W 16-ohm Dual (per ch.) 300W 300W 625W 625W 70V Dual (per ch.) 300W 600W 1000W 1500W 100V Dual (per ch.) 300W* 600W* 1000W 1500W 4-ohm Bridge 300W 500W 2000W 3000W 8-
