Changing the Speaker Line Voltage | TOA Electronics VM-2120 guide

20. CHANGING THE SPEAKER LINE VOLTAGE

Caution: Leave the following work to a qualified service technician.

Be sure to switch off the power before the work.

The VM amplifier's speaker line voltage is set for 100 V line output. For 50 V or 70 V line applications, change internal connector wiring as shown below.

Step 1. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the cover.

Step 2. Pull the cable connector (9-pin) connected to CN1102 connector on the circuit board with the zone volume control (selector switch).

Step 3. Change wires inserted into the cable connector for different wires according to color-coding shown in the table below to switch to the desired line voltage.

Step 4. Connect the cable connector to the circuit board.

Step 5. Using the 4 rear panel screws and 6 side panel screws removed in Step 1, replace the amplifier cover.

CN1102 connector

VM amplifier's front panel

Connector pin assignment

Speaker line voltage

CN1102 Connector Pin Number

1

2

3

4

5

6

7

8

9

100

V

White

Violet

Blue

Green

Yellow

Orange

Red

Brown

Black

70

V

Violet

Blue

Green

Yellow

Orange

Red

Brown

White

Black

50

V

Blue

Green

Yellow

Orange

Red

Brown

White

Violet

Black

Speaker line voltage/impedance

Speaker line voltage

VM-2120

VM-2240

100 V

83 Ω

42 Ω

70 V

42 Ω

21 Ω

50 V

21 Ω

10 Ω

How to remove cables from connector

Pull out the cable pressing the lock spring with a pointed object like tweezers as shown below.

Pull out the cable.

Press the lock spring.

1

9

44

Image 44

TOA Electronics VM-2120 Changing the Speaker Line Voltage, Connector pin assignment, How to remove cables from connector

Contents

System Management Amplifier Table of Contents Remote Microphone Installation Safety Precautions Safety Symbol and Message ConventionsWhen Installing the Unit When the Unit is in Use When Installing the Unit Features General DescriptionSystem Management Amplifier VM-2120/VM-2240 Remote Microphone RM-200M Handling Precautions Installation PrecautionsVM-2120/VM-2240 and RM-200M/RM-210 VM-2120/VM-2240 Nomenclature and Functions System Management Amplifier VM-2120/-2240 Front Rear Function switch Settings An 8-bit DIP switch and selects Control input and output connector Control I/ODC power input Signal earth terminal Voice Announcement Board EV-200 Surveillance Board SV-200M Remote Microphone RM-200M Top Rear Right Side Left Side System Configuration Remote Microphone Operation Panel Function Speaker zones with 2 VM amplifiers Connection method vs. Distance Power Supply from the VM Amplifier to Remote MicrophoneConnection between Remote Microphone and VM Amplifier Power supply using cables other than Category 5 STP cable Keys/Indicators Used for Emergency Broadcast Emergency Alert and Evacuation BroadcastEmergency Broadcast Equipment System management amplifier VM-2120/-2240 Evacuation announcement example*4 Emergency Broadcast Operation Typical ExampleAlert announcement example*3 Page Restoration to general-purpose broadcast Emergency modeEmergency Broadcast Sequence Background Music Broadcast Microphone Announcements When Operated by Control InputBroadcast Operation AT the Amplifier Operation and Display Sections Broadcast volumeRemote Microphone GENERAL-PURPOSE Broadcast Broadcast Operation Press-to-talk operation Operation below follows on the previous Lock operation GENERAL-PURPOSE Broadcast Priority Broadcast Source-to-Priority Relationship Zone Broadcast source Made a broadcast last Priority Function during BGM Broadcast How the Chime Tone Is Used Chime FunctionAvailable Chime Tone Types Independent chime activation remote control Operating procedure Westminster chime Choke Coil Installation Input Transformer Installation and ITS Board Modification Transformer InstallationInputs 1 Remote Microphone RM or Telephone Paging TEL Switching Off the Phantom Power Supply RM/TEL input transformer board EV-200 surveillance signal output Switch No Mounting AN Optional EV-200 Voice Announcement Board CF Card security cover Communications with VM VM-2120 or VM-2240 amplifier Mounting AN Optional SV-200M Surveillance BoardSpeaker line surveillance activation time Surveillance I/O blank panel Rack Mounting Amplifier Input ConnectionTwo Amplifiers Stack-Connection Microphone Connection to the VM Amplifier Telephone Paging Input Connections External Attenuator Control Wiring Wire System Connection Attenuator C CONTROL*1 Changing the Speaker Line Voltage Connector pin assignmentHow to remove cables from connector Control I/O Connector Functions Control I/O connector pin function table Electrical characteristics Surveillance I/O Connector Functions Surveillance I/O connector pin function table Chime Selection table VM Amplifiers Internal Function Switches RM RM-200M Unit No. table Remote Microphones Function SwitchesConnected unit No. table SW3 Broadcast GROUP/ZONE Setting Setting example mark indicates Set stateDefault setting Routing Assignment Operating Keys Recorded Message-to-Group assignment Zone-to-Group Assignment Operation Lighting status All zones setting and its cancellation Group setting contents check Indicator status Operation for zone selection and its cancellation Dual indication of group and zone selections Dual indication of setting item and group selections Message setting contents checkOperation for group selection and its cancellation Recorded Message-to-Group Assignment Operation Linkage Between Remote Microphone and ITS Extension Remote Microphones Label Preparation Name Label PreparationAmplifiers Label Preparation Pattern paper for hand writing Dimensional diagram for printing devices Setting items and contents Compactflash CF Card RecordingRecording Message Program/Sentence Composition Example Message Program Example VM-2120/-2240 Specifications System Management Amplifier VM-2120/-2240 To be AWG Remote Microphone RM-200M Accessories Optional productsRemote microphone extension RM-210 Voice announcement board EV-200Page 133-12-726-70