Crown Audio CH Series, CL Series operation manual Table of Contents

CH and CL Series Power Amplifiers

Table of Contents

Important Safety Instructions		2
Declaration of Conformity		3
1 Welcome		5
1.1	Features	5
1.2	How to Use This Manual	5
2 Setup		6
2.1	Unpack Your Amplifier	6
2.2	Install Your Amplifier	6
2.3	Ensure Proper Cooling	6
2.4	Choose Input Wire and Connectors	7
2.5	Choose Output Wire and Connectors	7
2.6	Switch Settings	8
2.7	Wire Your System	9
	2.7.1 Models CH1 & CH2 Stereo Mode	9
	2.7.2 Models CH1 & CH2 140V Bridge Mode	9
	2.7.3 Model CH4 Stereo Mode	10
	2.7.4 Model CH4 Bridge Mode	10
.	2.7.5 Models CL1 & CL2 Stereo Mode	11
	2.7.6 Models CL1 & CL2 Bridge Mode	11
.	2.7.7 Model CL4 Stereo Mode	12
	2.7.8 Model CL4 Bridge Mode	12
	2.7.9 All Models: How to Parallel the Inputs
	in Stereo Mode	13
2.8	Connect to AC Mains	13
2.9	Startup Procedure	13
3 Operation		14
3.1	Precautions	14
3.2	Indicators	18
3.3	Controls	18

4 Advanced Features and Options	19
4.1 Protection Systems	19
4.1.1 Power Circuit Breaker	19
4.1.2 Proportional-speed or 3-speed Fan	19
4.2 Advanced Features	19
4.2.1 BCA® (CH4 and CL4 Only)	19
4.2.2 Switching Power Supply with PFC (CH4 and CL4 Only) .19
4.3 Options	19
4.3.1 Input Sensitivity	19
4.3.2 Crown SST Modules	19
4.3.3 Fault Monitoring	21
4.3.4 Precision Detented Level Controls	22
5 Principles of Operation	23
5.1 CH1, CH2, CL1 and CL2	23
5.2 CH4 and CL4	25
5.2.1 Audio Signal Path	25
5.2.2 Power Supply Operation	27
6 Troubleshooting	28
7 Specifications	29
8 AC Power Draw and Thermal Dissipation	34
9 Service	38
9.1 International and Canada Service	38
9.2 US Service	38
9.2.1 Service at a US Service Center	38
9.2.2 Factory Service	38
9.2.3 Factory Service Shipping Instructions:	38
9.2.4 Packing Instructions	38
9.2.5 Estimate Approval	38
9.2.6 Payment of Non-Warranty Repairs	38
10 Warranty	39
Crown Factory Service Information Form	41

page 4 Operation Manual