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OPERATING INSTRUCTIONS

POWER AMPLIFIER 

PA-3640VB

1. SAFETY PRECAUTIONS 

........................... 2

2. GENERAL DESCRIPTION 

......................... 4

3. NOMENCLATURE AND FUNCTIONS

Front ............................................................ 4
Rear ............................................................. 5

4. RACK MOUNTING 

..................................... 6

5. CONNECTIONS

5.1. AC Power Supply ................................. 6
5.2. 24 V DC Power Supply ......................... 6
5.3. Speaker and Attenuator Connection .... 7

6. MUTE LEVEL ADJUSTMENT 

(For qualified service personnel only) ......... 8

7. SPECIFICATIONS 

...................................... 8

Accessories ................................................. 8
Optional product .......................................... 8

Thank you for purchasing TOA's Power Amplifier. 
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

TABLE OF CONTENTS

Summary of Contents for PA-3640VB

Page 1: ...1 AC Power Supply 6 5 2 24 V DC Power Supply 6 5 3 Speaker and Attenuator Connection 7 6 MUTE LEVEL ADJUSTMENT For qualified service personnel only 8 7 SPECIFICATIONS 8 Accessories 8 Optional product...

Page 2: ...spill into the unit this may cause a fire or electric shock Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit s cover as this may result in fire or e...

Page 3: ...so may cause a fire or personal injury Install the equipment rack on a stable hard floor Fix it with anchor bolts or take other arrangements to prevent it from falling down When connecting the unit s...

Page 4: ...es The unit can operate on either 220 V AC or 24 V DC The rear panel includes provision for mounting an optional YA 1000A Fault Detection Circuit Module that functions to detect power amplifier failur...

Page 5: ...ut when the Priority control is activated The Priority output terminal can be connected to the next power amplifier s Priority input terminal feeding the same Priority input sources to the amplifier 1...

Page 6: ...space should be provided upper and lower side of the units for ventilation The Perforated Panel is recommended in place of space 5 CONNECTIONS 5 1 AC Power Supply The PA 3640VB is a permanent connecte...

Page 7: ...ion Connect speakers to either 100 V 27 8 or 50 V 6 9 terminal Never use both terminals simultaneously 5 3 2 Attenuator Connection The PA 3640VB has a built in relay activated by the Priority control...

Page 8: ...JUSTMENT For qualified service personnel only When the Priority control input is activated the Priority input mutes the Program input by a preset level which can be adjusted with the Mute level contro...

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