Operation Manual
CT Power Amplifiers
page 4 page 5
CT Power Amplifiers
Operation Manual
Important Safety Instructions ...................................... 2
Declaration of Conformity ........................................... 3
1 Welcome .........................................5
1.1 Features ........................................................... 5
2 How to Use This Manual ........................ 5
3 Features ........................................... 5
4 Setup .............................................. 6
4.1 Unpack Your Amplifier ......................................6
4.2 Install Your Amplifier ........................................6
4.3 Ensure Proper Cooling ..................................... 6
4.4 Choose Input Wire and Connectors .................. 7
4.5 Choose Output Wire and Connectors ...............7
4.6 Wire Your System .............................................8
4.7 Connect to AC Mains ....................................... 8
4.8 Startup Procedure ............................................ 9
5 Precautions ......................................9
6 Front Panel ....................................... 10
7 Back Panel ........................................ 11
8 Amp Configuration ............................... 12
8.1. 70Hz HPF (High Pass Filter) ............................. 12
8.2 Limiter ............................................................. 12
9 Operating Modes ................................. 12
9.1 Normal .............................................................. 12
9.2 Green Power ..................................................... 12
9.3 Deep Sleep .......................................................12
10 Auxiliary Ports .................................13
9.1 Deep Sleep .......................................................13
9.2 Amp Status ....................................................... 13
11 Input Routing ................................... 13
13 Advanced Features ............................14
13.1 Protection Systems ......................................... 14
13.1.1 Thermal Indicator .................................... 14
13.1.2 Fault .......................................................14
13.1.3 High-Pass Filters .................................... 14
13.1.4 AC Under/Over Voltage Protection ..........14
13.1.5 Circuit Breaker ........................................ 14
13.1.6 Convection-cooled Chassis .................... 14
13.1.7 Auto-Standby .......................................... 14
13.2 Features .......................................................... 14
13.2.1 Switching Power Supply ........................14
13.2.2 Power Mode ............................................14
13.2.3 Adaptive Voltage Rail ..............................14
13.2.4 DriveCore Power Stage ........................... 14
14 Accessories .....................................14
14.1 XFMR 4/8 .................................................. 14
14.2. Rack Support/Ears .................................... 14
15 Troubleshooting ................................15
15.1 Power Indicator ...............................................15
15.2 Fault Indicator ................................................. 15
15.3 Thermal Indicator ............................................15
15.4 Clip Indicator .................................................. 15
15.5 Signal Indicator ..............................................15
15.6 Ready Indicator ............................................... 15
16 Specifications ................................... 16
17 AC Power Draw and Thermal Dissipation ... 17
18 Service ........................................... 21
19 Warranty ......................................... 22
Product Registration Form ........................................... 25
Factory Service Information Form ............................... 27
Table of Contents
1 Welcome
Crown
®
ComTech DriveCore™ amplifiers provide state-of-the-art
technology for inst alled sound applications. The ComTech amplifiers
provide noiseless operation and small footprint with excellent qualit y and
performance.
ComTech DriveCore amplifiers offer:
1.1 Features
Audiophile Sound
• A signal-to-noise ratio of better than 110dB
• Total harmonic distortion below 0.05% across the full audio bandwidth
• Greater than 70dB crosstalk
• Frequency response of ±0.5dB
Size Advantage
• Up to 8 channels in a single rack-space
• Weight of only 10 pounds (4.54 Kg)
Power Efficiency
• Over 90% efficient in the DriveCore amplifier stage
• Power consumption of less than 1W when not in use (In Deep Sleep)
• Green Mode delivers power when needed. Amplifier efficency increases
by up to 10% when compared to typical class D amplifiers
Typical applications for ComTech DriveCore amplifiers include boardrooms,
video and teleconferencing, VIP suites in stadiums and arenas, and upscale
restaurants and retail outlets.
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly set up and
operate your amplifier. It does not cover every
aspect of installation, setup, or operation that
might occur under every condition. For additional
information, please consult Crown’s Amplifier
Application Guide (available online at www.
crownaudio.com), Crown Technical Support, your
system installer, or system retailer).
3 Features
• 4 channel or 8 channel (4 inputs with 4
outputs or 8 inputs with 8 outputs)
• Single rack space
• Balanced 3-pin Barrier block-type/line inputs
• 4-pin Phoenix-type speaker outputs
• Flexible input routing
• Multiple Power Configuration (Auto-Standby,
Deep Sleep, and Green Mode)
• Auxiliary port for amp status and power
saving mode (Deep Sleep)
• Circuit breaker protection with reset switch
• Convection-cooled chassis (no fan)
• Three-year, no-fault, fully transferable
warranty that completely protects your
investment and guarantees its specifications
• Can be used in mass notification and EN 54
systems
• Patented technology including DriveCore
TM
• Fault Reporting through Aux Port
• Adaptive Rail Technology for power
on demand.
• Complies with Green Edge by Harman
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