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1
CONTENTS .......................................................................................................................................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
Speaker 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 ..............................................................................................................6
5.1
Gain switch.................................................................................................................................6
5.1.1
The DIP-switch...................................................................................................................6
5.1.2
Sensitivity...............................................................................................................................6
5.1.3
Options ...............................................................................................................................7
5.2
Link switch .................................................................................................................................7
5.3
Operation modes.........................................................................................................................7
5.3.1
Stereo mode............................................................................................................................7
5.3.2
Note for bench test .............................................................................................................7
5.3.3
Tandem mode .....................................................................................................................7
5.3.4
Bridge mono mode .............................................................................................................8
5.3.5
Bridge mono mode features................................................................................................8
5.4
Impedance matching (MLS switch) ...........................................................................................8
5.4.1
A practical way to find your MLS
TM
settings.....................................................................9
5.4.2
MLS technology – the background ..................................................................................10
5.4.3
The problem .....................................................................................................................10
5.4.4
The solution......................................................................................................................10
6
INSTALLATION.............................................................................................................................10
6.1
Mounting ..................................................................................................................................10
6.2
Cooling .....................................................................................................................................10
6.3
Operating voltage .....................................................................................................................11
6.4
Denmark ...................................................................................................................................11
6.5
Grounding.................................................................................................................................11
6.6
Power consumption ..................................................................................................................11
6.6.1
Calculation........................................................................................................................12
7
CONNECTIONS..............................................................................................................................13
7.1
Input connections .....................................................................................................................13
7.1.1
Balanced inputs ................................................................................................................13
7.1.2
Unbalanced inputs ............................................................................................................13
7.2
Connecting speakers.................................................................................................................14
8
OPERATION ...................................................................................................................................14
8.1
Operation precautions...............................................................................................................14
8.2
Powering up – Soft start ...........................................................................................................14
8.3
Input attenuators .......................................................................................................................15
8.4
Indicators ..................................................................................................................................15
9
PROTECTION FEATURES............................................................................................................15
9.1.1
Clip limiter .......................................................................................................................15
9.1.2
Thermal protection ...........................................................................................................16
9.1.3
VHF protection.................................................................................................................16
9.1.4
Short circuit protection .....................................................................................................16
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