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Lab.gruppen fP Series FP 6400 User Manual

Lab.gruppen fP Series FP 6400
20 pages
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Lab.gruppen fP Series FP 6400 Specifications

General IconGeneral
Number of Channels2
Total Harmonic Distortion (THD)< 0.1%
Voltage Gain32 dB
Frequency Response20 Hz - 20 kHz
Damping Factor> 500
Input Sensitivity1.4 V
Input Impedance20 kΩ
Dimensions (H x W x D)3.5 x 19 x 15.5 in

Summary

Warnings and Safety

Explanation of Graphical Symbols

Explains warning symbols like lightning and exclamation points.

General Warning

Advises against exposing apparatus to rain or moisture.

Cautionary Advice

Advises not to remove screws and to refer servicing to qualified personnel.

Important Safety Instructions

Lists crucial safety guidelines for amplifier operation and handling.

User Responsibility Overview

Outlines user's role in safe operation and preventing damage.

Speaker Damage Prevention

Warns about amplifier power potentially damaging loudspeakers.

Speaker Output Hazard

Warns about hazardous output voltages and touching exposed speaker wiring.

Radio Interference Compliance

Discusses compliance with EMC/FCC rules and potential interference.

Introduction to fP 6400

Unpacking and Initial Checks

Instructions for carefully unpacking the amplifier and checking for damage.

Front Panel Overview

Identifies and describes the components on the amplifier's front panel.

Rear Panel Overview

Identifies and describes the components on the amplifier's rear panel.

Rear Panel Features and Operation Modes

Gain Switch Functionality

Explains how the rear panel DIP-switch adjusts input sensitivity.

DIP Switch Configuration

Details the layout and function of the rear panel DIP switches.

Sensitivity Settings Explained

Defines sensitivity and how it relates to input voltage and output power.

Link Switch Operation

Describes the function of the Link switch for changing operation modes.

Operation Modes Explained

Details different amplifier operation modes like Stereo, Tandem, and Bridge Mono.

DIP Switch Options

Discusses optional modifications to the DIP switch bay.

Stereo Mode Configuration

Explains independent channel operation for stereo and bi-amping.

Bench Test Notes

Provides specific instructions for bench testing the amplifier.

Tandem Mode Setup

Describes linking both channels for the same input signal.

Bridge Mono Mode

Explains how to combine both channels for a single load.

Bridge Mono Mode Benefits

Highlights benefits of bridged mono mode, like increased power.

MLS Switch and Impedance Matching

Explains MLS switch for matching impedance and optimizing power.

Finding Optimal MLS Settings

Provides guidance on selecting optimal MLS settings for applications.

MLS Technology Background

Explains the technical background of MLS technology.

Low Impedance Load Problem

Discusses issues with conventional amplifiers driving low impedances.

Constant Power Converter Solution

Presents the "Constant Power Converter" solution for low impedance loads.

Installation and Setup

Mounting Guidelines

Guidance on rack mounting the amplifier, including spacing and supports.

Cooling System Explanation

Explains the forced air cooling system and airflow requirements.

Operating Voltage Requirements

Instructions on connecting the correct AC mains voltage and its implications.

Denmark Installation Deviation

National deviation concerning mains fuse requirements for Denmark.

Switzerland Installation Deviation

National deviation concerning mains connector type for Switzerland.

Grounding Procedures

Details grounding procedures, avoiding ground lift, and AC mains filter requirements.

Power Consumption Information

Explains how to determine amplifier power and current consumption.

Heat Power and Efficiency Calculation

Provides examples and charts for calculating heat power and efficiency.

Connections and Wiring

Input Connection Types

Describes how to connect input signals using XLR and 1/4" jacks.

Balanced Input Wiring

Details wiring for balanced XLR and 1/4" TRS inputs.

Unbalanced Input Wiring

Explains connecting unbalanced sources and minimizing hum.

Speaker Connection Guide

Instructions for connecting speakers using Neutrik NL4FC Speakon connectors.

Amplifier Operation

Pre-Operation Precautions

Lists essential precautions before powering up or operating the amplifier.

Powering Up Sequence (Soft Start)

Describes the amplifier's soft-start sequence and initial operational indicators.

Input Level Attenuator Usage

Explains the function of front panel attenuators for signal level adjustment.

Front Panel Indicators

Describes the front panel LEDs (yellow for protection, green for signal/power).

Protection Features

Clip Limiter Function

Explains the clip limiter's role in preventing speaker damage from clipped signals.

Thermal Protection Mechanism

Details how thermal protection mutes the signal to prevent overheating.

VHF Protection

Describes VHF protection muting signals above 12kHz to prevent output damage.

Short Circuit Protection

Explains the protection against short circuits on the outputs.

Automatic Fuse Saver (AFS)

Describes the AFS limiter for preventing mains breaker trips during high current draws.

AC Mains Voltage Protection

Explains protection against over or under AC mains voltage.

AC Power Indicator LED

Explains the green AC LED indicating mains power presence.

DC Protection Features

Details DC protection mechanisms for the output channels.

Maintenance and Troubleshooting

Troubleshooting Common Faults

Lists common faults and checks for diagnosing amplifier issues.

Specifications

Warranty Information

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