Page 2 - Important Safety Instructions; FCC COMPLIANCE NOTICE; Importantes Instructions de Sécurité
Operation Manual CT Power Amplifiers page 2 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manu...
Page 3 - DECLARATION of CONFORMITY
CT Power Amplifiers page 3 CT Power Amplifiers Operation Manual DECLARATION of CONFORMITY European Representative’s Name and Address: David Budge 10 Harvest Close Yateley GU46 6YS United Kingdom Equipment Type: Power Amplifiers Family Name: CT series Model Names: CT8150, CT875, CT4150, CT475 EMC Sta...
Page 4 - Table of Contents
Operation Manual CT Power Amplifiers page 4 Important Safety Instructions ...................................... 2 Declaration of Conformity ........................................... 3 1 Welcome ......................................... 5 1.1 Features .................................................
Page 5 - Welcome; How to Use This
CT Power Amplifiers page 5 CT Power Amplifiers Operation Manual 1 Welcome Crown ® ComTech DriveCore™ amplifiers provide state-of-the-art technology for installed sound applications. The ComTech amplifiers provide noiseless operation and small footprint with excellent quality and performance.ComTech ...
Page 6 - Setup
Operation Manual CT Power Amplifiers page 6 4.1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage is found, notify the transpor tation company immediately. Only you can ini tiate a claim for shipping damage. Crown will be h...
Page 9 - Precautions
CT Power Amplifiers page 9 CT Power Amplifiers Operation Manual 4.8 Startup Procedure Use the following procedure when first turning on your amplifier:1. Turn down the level of your audio source. 2. Turn down the level controls of the amplifier (see Section 7.6). 3. Turn on the “Power” switch. The P...
Page 10 - Front Panel
Operation Manual CT Power Amplifiers page 10 6 Front Panel 1. Fault Indicator • Red LED• One per output channel• Flashes when the amplifier output channel has stopped operating. Usually this means that the amplifier must be serviced. (See Section 15 Troubleshooting) 2. Thermal Indicator • Red LED• O...
Page 11 - Back Panel
CT Power Amplifiers page 11 CT Power Amplifiers Operation Manual 7 Back Panel 1. AC Power Inlet • Standard IEC type 320 inlet for detachable connector • 100-240V 2. Reset Button/Breaker • Push button switch• Resets the circuit breaker that protects the power supply • A circuit breaker located near t...
Page 12 - Amp Configuration
Operation Manual CT Power Amplifiers page 12 8 Amp Configuration 9 Operating Modes 8.1 70Hz HPF (High Pass Filter) On the back panel, one 2-position high-pass filter switch will only allow signals above 70Hz to be amplified. This is to prevent transformer saturation. The HPF, when turned on, is acti...
Page 13 - 0 Auxiliary Port
CT Power Amplifiers page 13 CT Power Amplifiers Operation Manual 10.1 Deep Sleep In deep sleep mode, the amp consumes less than 1 watt of power. It is activated via the AUX port with a ground closure.To bring the amplifier out of deep sleep, remove the ground closure via the AUX port. 10.2 Amp Statu...
Page 14 - 3 Advanced Features; 4 Accessories
Operation Manual CT Power Amplifiers page 14 13 Advanced Features 13.1 Protection Systems Your Crown amplifier provides extensive protection and diagnostic capabilities, including thermal level control, fault indicators, high-pass filtering, DC protect, AC under/over voltage protection, inrush limit...
Page 15 - 5 Troubleshooting
CT Power Amplifiers page 15 CT Power Amplifiers Operation Manual 15 Troubleshooting 15.1 Power Indicator OFF CONDITION: Power indicator is OFF. POSSIBLE REASON • The amplifier has lost AC power.• The amplifier’s Power switch is off.• The amplifier is not plugged into the power receptacle.• The ampli...
Page 16 - 6 Specifications
Operation Manual CT Power Amplifiers page 16 16 Specifications Performance CT475 CT4150 CT875 CT8150 Channels 4 4 8 8 Sensitivity 1.4V 1.4V 1.4V 1.4V Rated Power Output 75W per channel into 8/4 ohms 125W per channel into 8/4 ohms 75W per channel into 8/4 ohms 125W per channel into 8/4 ohms Signal to...
Page 17 - 7 AC Power Draw and Thermal Dissipation; ComTech DriveCore 475
CT Power Amplifiers page 17 CT Power Amplifiers Operation Manual 17 AC Power Draw and Thermal Dissipation ComTech DriveCore 475 Load Watts in Watts out 120VAC Watts Dissipated Watts in Watts out 240VAC Watts Dissipated Thermal Dispation Line Current Watts Out Per 1A Line Current Line Current Watts O...
Page 19 - ComTech DriveCore 875
CT Power Amplifiers page 19 CT Power Amplifiers Operation Manual 17 AC Power Draw and Thermal Dissipation ComTech DriveCore 875 Load Watts in Watts out 120VAC Watts Dissipated Watts in Watts out 240VAC Watts Dissipated Thermal Dispation Line Current Watts Out Per 1A Line Current Line Current Watts O...
Page 25 - OWNER’S INFORMATION - PLEASE PRINT; * MODEL; PRODUCT REGISTRATION; PRODUCT INFORMATION; CUT ON THIS
CT Power Amplifiers page 25 CT Power Amplifiers Operation Manual Online registration is also available at http://crownweb.crownintl.com/webregistration. Warranty is only valid within the country in which the product is purchased. When this form is used to register your product, it may be mailed or f...
Page 27 - PLEASE PRINT CLEARLY; PRODUCT RETURN INFORMATION; PAYMENT OPTIONS; Crown Audio Factory Service Information
CT Power Amplifiers page 27 CT Power Amplifiers Operation Manual PLEASE PRINT CLEARLY SRA #: __________________(If sending product to Crown factory service.) Model: ____________________________________________ Serial Number: _____________________ Purchase Date: _____________ PRODUCT RETURN INFORMATI...