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MICROPHONE PREAMPLIFIER
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Instruction Manual
CONTENTS
1. INTRODUCTION – 4
1.1 LOGICAL CONTROL BLOCKS — 4
1.2 PATENTED TECHNOLOGY — 4
1.3 SIGNAL & CONTROL — 4
1.4 SIMPLIFIED BLOCK DIAGRAM — 5
2. QUICK START – 6
2.1 FRONT PANEL — 6
2.2 REAR PANEL — 7
2.3 GETTING UP & RUNNING — 8
3.3 REAR PANEL VIEW — 10
3. INSTALLATION – 10
3.1 UNPACKING AND INSPECTING — 10
3.2 MOUNTING — 10
3.3 REAR PANEL VIEW — 10
3.4 POWER CONNECTION — 10
3.5 MICROPHONE INPUT — 11
3.6 OUTPUT CONNECTORS — 11
3.7 INPUT TRANSFORMER MODE — 12
3.8 MIDI CONNECTIONS — 12
3.9 COM PORT — 13
3.10 INSTALLING NEW FIRMWARE INTO THE 1788A — 13
3.11 AUX OUTPUT POST/PRE MODE SETTING — 13
4. FUNCTIONS IN DETAIL – 15
4.1 LOCAL BLOCK — 15
4.2 CONTROL BLOCK — 18
4.3 DIGITAL BLOCK — 20
4.4 MONITOR BLOCK — 21
4.5 TEST BLOCK — 21
4.6 SECONDARY FUNCTIONS — 22
4.6.1. Display Brightness — 22
4.6.2. Flash Version — 22
4.6.3. Synchronize — 22
4.6.4. Sysex Dump — 22
5. USING THE DIGITAL MODULE – 23
5.1 SYNCHRONIZATION — 23
5.2 SENDING DIGITAL AUDIO — 28
6. TYPICAL OPERATION – 29
6.1 BYPASSING A CONSOLE’S MICROPHONE PREAMPLIFIERS — 29
6.2 DIRECT TRACKING — 30
6.3 USING ALL OUTPUTS TO FEED FIVE DESTINATION DEVICES — 31
6.4 USING THE MICROPHONE OUTPUT LIMITER — 32
6.5 USING POLARITY REVERSE — 32
6.6 GROUPING CHANNELS — 33
7. Warranty & Service – 34
7.12 WARRANTY — 34
6.2 SERVICE INFORMATION — 34
8. Specifications – 35
8.1 GENERAL SPECIFICATIONS — 35
8.2 ARCHITECT’S SPECIFICATIONS — 36
APPENDICES - 47
Appendix A: Balanced and Unbalanced Lines and Operating Levels — 37
Appendix B: Dealing With Grounds and Hum — 38
Appendix C: Proper Wiring Techniques — 39
Appendix D: Standard Cable Wiring — 41
Appendix E: Helpful Wiring Table — 45
Appendix F: Word Clock Cabling — 47
CONTENTS
