CH M1.1 - Technical Highlights; Unmatched Flexibility; Advanced Monitoring Circuits; Construction and Modularity

Table of contents
1 Technical highlights............................................................................................................................................................. 7
1.1 Unmatched flexibility................................................................................................................................................. 8
1.1.1 Operation modes............................................................................................................................................... 8
1.1.2 Feedback ratio control........................................................................................................................................ 9
1.1.3 Gain control...................................................................................................................................................... 9
1.1.4 Bias circuitry (ExactBias).................................................................................................................................... 9
1.2 Advanced monitoring circuit........................................................................................................................................ 9
1.2.1 Power monitoring.............................................................................................................................................. 9
1.2.2 Temperature monitoring.................................................................................................................................. 10
1.3 Careful construction.................................................................................................................................................. 10
1.4 Modular architecture and slot-in boards..................................................................................................................... 10
1.4.1 Monaural analog inputs: ANALOG_IN board...................................................................................................... 11
1.4.2 Firmware update and control: CONTROL board................................................................................................... 11
1.5 Power supply........................................................................................................................................................... 11
2 Read carefully before use.................................................................................................................................................. 12
2.1 Package content....................................................................................................................................................... 12
2.2 Safety notice............................................................................................................................................................ 12
2.3 User manual............................................................................................................................................................ 13
2.4 Mains supply............................................................................................................................................................ 13
2.5 Transport and packaging.......................................................................................................................................... 13
2.6 Cleaning.................................................................................................................................................................. 14
2.7 Maintenance and service........................................................................................................................................... 14
3 Installation....................................................................................................................................................................... 15
3.1 Unpacking............................................................................................................................................................... 15
3.2 Positioning your unit................................................................................................................................................ 15
3.3 Connections.............................................................................................................................................................. 16
3.3.1 CONTROL board............................................................................................................................................... 18
3.3.1.1 USB port................................................................................................................................................. 18
3.3.1.2 Ethernet port.......................................................................................................................................... 18
3.3.2 ANALOG IN board............................................................................................................................................ 18
3.3.3 Power cord receptacles and voltage selection..................................................................................................... 19
3.4 Amplifier modes....................................................................................................................................................... 19
3.4.1 Stereo mode.................................................................................................................................................... 19
3.4.2 Monaural mode............................................................................................................................................... 19
3.4.3 Bridge mode................................................................................................................................................... 20
3.4.4 Passive bi-amplification mode........................................................................................................................... 20
3.4.5 Active bi-amplification mode............................................................................................................................ 21
3.4.6 Daisy-chain mode............................................................................................................................................ 22
4 Operation......................................................................................................................................................................... 23
4.1 Front panel controls.................................................................................................................................................. 23
4.1.1 Front panel..................................................................................................................................................... 23
4.1.2 Front panel push buttons.................................................................................................................................. 24
4.2 Operating modes...................................................................................................................................................... 24
4.2.1 Normal mode.................................................................................................................................................. 24
4.2.2 Shortcuts......................................................................................................................................................... 26
Rev 3.0 M1.1 User Manual 5