Crown Audio MA-1202, MA-602 Table of Contents

Operation Manual
MA Series Power Amplifiers
page 4
Important Safety Instructions ..........................2
Declaration of Conformity................................3
1 Welcome ...................................................5
1.1 Features ..............................................5
2 How to Use This Manual .......................5
3 Setup .........................................................6
3.1 Unpack Your Amplifier ........................6
3.2 Install Your Amplifier ..........................6
3.3 Ensure Proper Cooling ........................6
3.4 Choose Input Wire and Connectors .... 7
3.5 Choose Output Wire and Connectors...7
3.6 Wire Your System ...............................8
3.6.1 Stereo Mode ................................8
3.6.2 Bridge-Mono Mode ..................... 8
3.6.3 Parallel-Mono Mode ....................9
3.7 Set Input Sensitivity ............................10
3.8 Connect to AC Mains ..........................10
3.9 Startup Procedure ...............................10
4 Operation ..................................................10
4.1 Precautions .........................................10
4.2 Front Panel Controls and Indicators ....11
4.3 Back Panel Controls, Indicators and
Connectors .........................................12
4.4 Indicators ............................................13
5 Advanced Features and Options ..........14
5.1 Protection Systems..............................14
5.1.1 ODEP............................................14
5.1.2 Standby Mode.......................................... 14
5.1.3 Transformer Thermal Protection................14
5.1.4 Fuses and Circuit Breakers.......................15
5.2 Advanced Features.......................................... 15
5.3 Options.......................................................... 16
5.3.1 PIP and PIP2 Modules........................... 16
5.3.2 Cooling Fan Options.............................. 17
5.3.3 Level Control Shaft Lock......................... 17
6 Troubleshooting.................................................. 18
7 Theory of Operation.......................................... 19
7.1 Overview........................................................ 19
7.2 Circuit Theory................................................. 19
7.2.1 Stereo Operation..................................... 19
7.2.2 Bridge-Mono Operation........................... 20
7.2.3 Parallel-Mono Operation......................... 20
8 Specifications....................................................... 21
9 AC Power Draw and Thermal Dissipation....... 30
10 Service.............................................................. 31
10.1 International and Canada Service.................... 31
10.2 US Service.................................................... 31
10.2.1 Service at a US Service Center............... 31
10.2.2 Factory Service..................................... 31
10.2.3 Factory Service Shipping Instructions.....31
10.2.4 Packing Instructions...............................31
10.2.5 Estimate Approval....................................31
10.2.6 Payment of Non-Warranty Repairs...........31
11 Warranty............................................................. 32
Factory Service Information Form......................... 35
Table of Contents