Martin Audio MA4.2s User Manual

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CONTENTS
CONTENTS (ENGLISH)
1
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3
3.1 EXPLANATION OF GRAPHICAL SYMBOLS
3.2 WARNING
3.3 CAUTION
3.4 IMPORTANT SAFETY INSTRUCTIONS
3.5 USER RESPONSIBILITY
4
4.1 UNPACKING
4.2 FRONT PANEL
4.3 REAR PANEL
5
5.1 GAIN SWITCH
5.2 LINK SWITCH
5.3 OPERATING MODES
5.4 IMPEDANCE MATCHING (MLS SWITCH)
6
6.1 MOUNTING
6.2 COOLING
6.3 OPERATING VOLTAGE
6.4 DENMARK
6.5 SWITZERLAND
6.6 GROUNDING
6.7 POWER CONSUMPTION
7
7.1 INPUT CONNECTIONS
7.2 CONNECTING SPEAKERS
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8.1 OPERATION PRECAUTIONS
8.2 POWERING UP – SOFT START
8.3 INPUT ATTENUATORS
8.4 INDICATORS
9
9.1 OUTPUT LIMITER
9.2 THERMAL PROTECTION
9.3 VHF PROTECTION
9.4 SHORT CIRCUIT PROTECTION
9.5 AUTOMATIC FUSE SAVER, AFS - LIMITER
9.6 AC MAINS VOLTAGE PROTECTION
9.7 THE "AC" LED
9.8 D.C. PROTECTION
10
10.1 TROUBLESHOOTING
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12
All material © 2007. Martin Audio Ltd. Subject to change without notice.
PRINT
CONTENTS MA 4.2s USER GUIDE
APPROVALS
WARNINGS
3.5.1 LOUDSPEAKER DAMAGE
3.5.2 LOUDSPEAKER OUTPUT HAZARD
3.5.3 RADIO INTERFERENCE
INTRODUCTION
REAR PANEL FEATURES
5.1.1 GAIN
5.1.2 SENSITIVITY
5.1.3 OPTIONS
5.3.1 STEREO MODE
5.3.2 NOTES FOR AMPLIFIER TESTING
5.3.3 TANDEM MODE
5.3.4 BRIDGE MONO MODE
5.3.5 BRIDGE MONO MODE FEATURES
5.4.1 THE MLS TECHNOLOGY
5.4.2 THE PROBLEM
5.4.3 THE SOLUTION
INSTALLATION
6.7.1 CALCULATION
CONNECTIONS
7.1.1 BALANCED INPUTS
7.1.2 UNBALANCED INPUTS
OPERATION
PROTECTION FEATURES
MAINTENANCE
WARRANTY
SPECIFICATIONS MA4.2s
Martin Audio – MA4.2s (ETL) Amplifier
1
GUIDES
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