Operation Manual
MA 2402 Power Amplifier
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 .......25
10 Service .................................................................27
10.1 International and Canada Service ...................27
10.2 US Service......................................................27
10.2.1 Service at a US Service Center ...............27
10.2.2 Factory Service.......................................27
10.2.3 Factory Service Shipping Instructions....27
10.2.4 Packing Instructions...............................27
10.2.5 Estimate Approval...................................27
10.2.6 Payment of Non-Warranty Repairs..........27
11 Warranty...............................................................28
Product Registration Form............................................31
Factory Service Information Form ................................33
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