Inter-m PAM-340A User Manual

Operation Manual
Public Address Amplifier
PAM-120A/340A/480A

Inter-m PAM-340A Specifications

General

Brand	Inter-m
Model	PAM-340A
Category	Amplifier
Language	English

Summary

Welcome and Safety

Cautionary Information

Safety warnings regarding electric shock, focusing on enclosure and voltage risks.

General Warning

Safety warning to prevent fire or shock hazard by avoiding rain or moisture exposure.

Unpacking

Installation

Environment and Safety Instructions

Guidance on suitable installation environments and crucial safety instructions for operation.

Product Features

Modular Design and Expansion

Details on optional modules (CD, Tuner, Cassette) to expand the amplifier's audio capabilities.

Input Management

Covers input gain controls, priority muting, and remote control inputs for flexible audio mixing.

Output and Signal Functions

Includes speaker selection, announcement chime, and emergency voice IC functionality.

Operation Guide

Power-On Procedures

Guidance on connecting sources and keeping volumes low before powering on the system.

Front Panel Controls and Indicators

Module Bays and Level Displays

Description of bays for optional modules and the output level LED meter.

Volume, Tone, and Master Controls

Controls for individual channel volume, bass, treble, and overall master volume.

Functional Buttons and Status Indicators

Explanation of chime button, speaker selectors, power switch, and protection indicator.

Rear Panel Connections (PAM-120A)

Speaker Output and Impedance Selection

Connecting speakers and selecting impedance for 4Ω, 70V, and 100V systems.

Ancillary Connections and Controls

Antenna, EQ, and Phantom Power connections and their functions.

Rear Panel Functions (PAM-120A) - Part 2

Power, Priority, and Backup Systems

Covers AC power input, priority switches, EXT chime/mute, and DC input terminals.

Audio Input/Output and Channel Connections

Details on Preamp Out, Amp In, Link In, Channel Inputs 1-6, and their gain controls.

Rear Panel Connections (PAM-340A/480A)

Speaker Output and Impedance

Connecting speakers and impedance selection for 100V systems.

Ancillary Connections and Controls

Antenna, EQ, and Phantom Power connections and their functions.

Rear Panel Functions (PAM-340A/480A) - Part 2

Power, Priority, and Emergency Features

Covers AC power input, priority switches, EM function, EXT chime/mute.

Remote Control and Audio Connectivity

Details on Remote Control Input, Preamp Out, Amp In, and Link In.

Rear Panel Inputs (PAM-340A/480A) - Part 3

Channel Inputs and Gain Controls

Description of channel inputs 1-6 and their respective input gain controls.

Connecting Speakers

Speaker System Connection Types

Instructions for connecting 4Ω/8Ω and high-voltage distributed speaker systems.

Speaker Connection Examples & Warnings

Parallel Connection Example

Illustrates connecting multiple speakers in parallel for total wattage.

Low-Impedance System Hazards

Cautionary note about hazardous voltages when connecting low-impedance systems.

Applications Diagram (PAM-120A)

Applications Diagram (PAM-340A/480A)

Block Diagram (PAM-120A)

Block Diagram (PAM-340A/480A)

Product Specifications

Service, Warranty, and Product Information

Service Procedures and Resources

Troubleshooting steps and how to obtain schematics and parts lists.

Warranty Terms and Contact

Details on warranty variations, options, and how to contact for service.

Product Variations and Options

Notes on AC power compatibility and the absence of optional items.