Martin Audio – MA900 Amplifier
E
NGLISH
1
CONTENTS (ENGLISH)
Page No
1
CONTENTS MA900 USER GUIDE
1
2
APPROVALS
2
3
WARNINGS
2
3.1
EXPLANATION OF GRAPHICAL SYMBOLS
2
3.2
WARNING
2
3.3
CAUTION
2
3.4
IMPORTANT SAFETY INSTRUCTIONS
2
3.5
USER RESPONSIBILITY
3
3.5.1
LOUDSPEAKER DAMAGE
3
3.5.2
SPEAKER OUTPUT HAZARD
3
3.5.3
RADIO INTERFERENCE
3
4
INTRODUCTION
4
4.1
UNPACKING
4
4.2
FRONT PANEL
4
4.3
REAR PANEL
5
5
REAR PANEL FEATURES
5
5.1
GAIN SWITCH
5
5.1.1
THE DIP-SWITCH
6
5.1.2
SENSITIVITY
6
5.1.3
OPTIONS
6
5.2
LINK SWITCH
6
5.3
OPERATING MODES
6
5.3.1
STEREO MODE
6
5.3.2
NOTES FOR AMPLIFIER TESTING
7
5.3.3
TANDEM MODE
7
5.3.4
BRIDGE MONO MODE
7
5.3.5
BRIDGE MONO MODE FEATURES
7
6
INSTALLATION
8
6.1
MOUNTING
8
6.2
COOLING
8
6.3
OPERATING VOLTAGE
8
6.4
GROUNDING
9
6.5
POWER CONSUMPTION
9
6.5.1
CALCULATION
9
7
CONNECTIONS
10
7.1
INPUT CONNECTIONS
10
7.1.1
BALANCED INPUTS
10
7.1.2
UNBALANCED INPUTS
11
7.2
CONNECTING SPEAKERS
11
8
OPERATION
12
8.1
OPERATING PRECAUTIONS
12
8.2
POWERING UP – SOFT START
12
8.3
INPUT ATTENUATORS
12
8.4
INDICATORS
12
9
PROTECTION FEATURES
12
9.1
OUTPUT LIMITER
13
9.2
VHF PROTECTION
13
9.3
SHORT CIRCUIT PROTECTION
13
9.4
AC MAINS VOLTAGE PROTECTION
13
9.5
DC PROTECTION
13
10
MAINTENANCE
13
10.1 TROUBLESHOOTING
14
11
WARRANTY
15
12
SPECIFICATIONS MA900
16
All material © 2007. Martin Audio Ltd. Subject to change without notice.
