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
Table of Contents
