Lab.gruppen fP Series FP 2400Q User Manual

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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
5.1.1 Gain ....................................................................................................................................6
5.1.2 Sensitivity...........................................................................................................................6
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) ...........................................................................................9
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..............................................................................................................................12
7.1 Input connections .....................................................................................................................12
7.1.1 Balanced inputs ................................................................................................................12
7.1.2 Unbalanced inputs ............................................................................................................13
7.2 Connecting speakers.................................................................................................................13
8 OPERATION ...................................................................................................................................14
8.1 Operation precautions...............................................................................................................14
8.2 Powering up – Soft start ...........................................................................................................14
8.3 Input attenuators .......................................................................................................................14
8.4 Indicators..................................................................................................................................15
9 PROTECTION FEATURES............................................................................................................15
9.1.1 Clip limiter .......................................................................................................................15
9.1.2 Thermal protection ...........................................................................................................15
9.1.3 VHF protection.................................................................................................................16
9.1.4 Short circuit protection.....................................................................................................16
9.1.5 AC mains voltage protection ............................................................................................16
9.1.6 DC protection ...................................................................................................................16
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Lab.gruppen fP Series FP 2400Q Specifications

General

Brand	Lab.gruppen
Model	fP Series FP 2400Q
Category	Amplifier
Language	English