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Crown
Amplifier
CL1
Crown CL1 User Manual
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Page 30
Contractor Series Power
Amplifiers
Reference Manual
Figure 7.4 CH4 & CL4 Fr
equency Response
Figure 7.5 CH1, CH2, CL1 & CL2 Damping Factor
Figure 7.6 CH4 & CL4 Damping Factor
29
31
Table of Contents
Default Chapter
6
Table of Contents
6
Contractor Series
8
Figure 1.1 Contractor Series Amplifiers
8
1 Welcome
9
Unpacking
9
Features
9
2 Controls, Indicators and Connectors
10
Figure 2.1 Contractor Series Front Panel Controls and Indicators
10
Figure 2.2 CH1 & CH2 Back Panel Controls and Connectors
10
Figure 2.3 CH4 Back Panel Controls and Connectors
11
Figure 2.4 CL1 & CL2 Back Panel Controls and Connectors
11
Figure 2.5 CL4 Back Panel Controls and Connectors
11
3 Installation
12
Mounting
12
Wiring
12
Figure 3.1 Mounting Dimensions
12
Figure 3.2 Stereo/Bridge Switch
13
Figure 3.3 4/8 Ohm, 70V/100V Operation Switches
13
Input Wiring
13
Output Wiring
13
Figure 3.4 CH1 & CH2 Wiring for Stereo Mode
14
Figure 3.5 CH1 & CH2 Wiring for Bridge Mode
14
Figure 3.6 CH4 Wiring for Stereo Mode
15
Figure 3.7 CH4 Wiring for Bridge Mode
15
Figure 3.8 CL1 & CL2 Wiring for Stereo Mode
16
Figure 3.9 CL1 & CL2 Wiring for Bridge Mode
16
Figure 3.10 CL4 Wiring for Stereo Mode
17
Figure 3.11 CL4 Wiring for Bridge Mode
17
4 Operation
18
Precautions
18
Startup Procedure
18
Indicators
18
Figure 4.1 Indicators
18
Controls
19
5 Advanced Features and Options
19
BCA ® (CH4 and CL4 Only)
19
Switching Power Supply with PFC (CH4 and CL4 Only)
19
Crown SST Modules
20
SST-MX Crossover
20
SST-SX Crossover
20
Figure 5.1 SST-MX Crossover Block Diagram
20
SST-SBSC Module
21
Fault Monitoring
21
Constant Voltage Computer
21
Figure 5.2 SST-SX Crossover Block Diagram
21
Figure 5.3 SST-SBSC Crossover Block Diagram
21
6 Principles of Operation
22
CH1, CH2, CL1 and CL2
22
Figure 6.1 CH1 & CH2 Circuit Block Diagram
22
Figure 6.2 CL1 & CL2 Circuit Block Diagram
23
CH4 and CL4
24
Audio Signal Path
24
Figure 6.3 CH4 Circuit Block Diagram
24
Figure 6.4 CL4 Circuit Block Diagram
25
Power Supply Operation
26
7 Specifications
27
Figure 7.1 Contractor Series Output Power
29
Figure 7.2 CH1 & CH2 Frequency Response
29
Figure 7.3 CL1 & CL2 Frequency Response
29
Figure 7.4 CH4 & CL4 Frequency Response
30
Figure 7.5 CH1, CH2, CL1 & CL2 Damping Factor
30
Figure 7.6 CH4 & CL4 Damping Factor
30
Figure 7.7 CH1, CH2, CL1 & CL2 Output Impedance
31
Figure 7.8 CH4 & CL4 Output Impedance
31
8 AC Power Draw and Thermal Dissipation
32
Figure 8.1 CH1 Power Draw, Current Draw and Thermal Dissipation
32
Figure 8.2 CH2 Power Draw, Current Draw and Thermal Dissipation
33
Figure 8.3 CH4 Power Draw, Current Draw and Thermal Dissipation
33
Figure 8.4 CL1 Power Draw, Current Draw and Thermal Dissipation
33
Figure 8.5 CL2 Power Draw, Current Draw and Thermal Dissipation
34
Figure 8.6 CL4 Power Draw, Current Draw and Thermal Dissipation
34
9 Installation Helps
35
Cooling
35
Additional Cooling
35
Input Wiring
35
Figure 9.1 Extra Cooling with a Rack-Mounted Blower
35
Figure 9.2 Balanced & Unbalanced Input Wiring
36
Figure 9.3 Polarity Conversions
36
Figure 9.4 Balanced Input Wiring
36
Figure 9.5 Unbalanced Input Wiring
36
Solving Input Problems
36
More about Output Modes
37
4/8 Ohm Operation (CH and CL Series)
37
And 100V Operation (CH Series Only)
37
Figure 9.6 Infrasonic Filter Capacitor Values
37
Figure 9.7 Unbalanced RFI Filters
37
Figure 9.8 Balanced RFI Filters
37
Output Wiring
38
Figure 9.9 Wire Size Nomograph
38
Additional Load Protection
39
Figure 9.10 Inductive Load (Transformer) Network
39
Solving Output Problems
39
Fault Circuit Wiring
40
Figure 9.11 Loudspeaker Fuse Nomograph
40
Figure 9.12 Fault Status LED Circuitry
40
Figure 9.13 RJ Jack Wiring and Pin Assignments
40
10 Applications
41
Restaurant
41
Figure 10.1 Restaurant System Example
41
House of Worship
42
Figure 10.2 House of Worship System Example
42
11 Service
43
Other manuals for Crown CL1
Specifications
2 pages
Supplementary Guide
1 page
Architectural & Engineering Specifications
1 page
5
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Crown CL1 Specifications
General
Cooling
Convection
Frequency Response
20Hz - 20kHz, +0/-1 dB
Total Harmonic Distortion
<0.5%
Signal-to-Noise Ratio
>100 dB
Input Impedance
20k Ohm
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