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Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
PUBLIC ADDRESS SYSTEM
4120A
4-CHANNEL AMPLIFIER
PROTECT
POWER
CLIP
TEMP
SIGNAL
CH 1
CH 2
CH 3
5
5
5
4
6
4
6
4
6
ON
3
7
3
7
3
7
OFF
2
8
2
8
2
8
1
9
1
9
1
9
0
10
0
10
0
10
4-CHANNEL AMPLIFIER
CH 4
5
4
6
3
7
2
8
1
9
0
10
4120A
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Table of Contents
Related Manuals for Sound Choice Pro Audio 4120A
Summary of Contents for Sound Choice Pro Audio 4120A
- Page 1 PUBLIC ADDRESS SYSTEM 4120A 4-CHANNEL AMPLIFIER 4120A 4-CHANNEL AMPLIFIER PROTECT POWER CLIP TEMP SIGNAL CH 1 CH 2 CH 3 CH 4 Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.
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Page 2: Table Of Contents
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ..................3 2. GENERAL DESCRIPTION ...................5 3. FEATURES ......................5 4. NOMENCLATURE AND FUNCTIONS 4.1 Front Panel ........................6 4.2 Rear Panel .........................7 5. CONNECTIONS 5.1 Speaker Connections ....................5.2 Input Connections ...................... 6. APPLICATIONS ..................... 7. -
Page 3: Safety Precautions
1. SAFETY PRECAUTIONS Be sure to read the instructions in this section carefully before use. Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included. We also recommend you keep this instruction manual handy for future reference. Safety Symbol and Message Conventions Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. - Page 4 SAFETY PRECAUTIONS When the Unit is in Use When Installing the Unit Do not place heavy objects on the unit as this may Never plug in nor remove the power supply plug cause it to fall or break which may result in with wet hands, as doing so may cause electric personal injury and/or property...
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Page 5: General Description
2. GENERAL DESCRIPTION With four separate power amplifiers in a single chassis and power ratings 120 watts RMS, these sleek, attractive units provide a compact solution for PA system amplification and distribution. Each channel has its own input and 4ohm,70V and 100V speaker outputs, so a wide variety of audio sources and speaker zones can be easily configured. -
Page 6: Nomenclature And Functions
4. NOMENCLATURE AND FUNCTIONS 4.1 FRONT PANEL 4120A 4-CHANNEL AMPLIFIER PROTECT POWER CLIP TEMP SIGNAL CH 1 CH 2 CH 3 CH 4 1. POWER SWITCH On top of the opening Power Press the end, power shut down 2. CH1\CH2\CH3\CH4 VOLUME Channel volume control 3. -
Page 7: Rear Panel
NOMENCLATURE AND FUNCTIONS 4.2 REAR PANEL CH 1 OUT CH 2 OUT CH 1 IN CH 2 IN XLR BAL INPUT ¦¸ ¦¸ 1-GND RISK OF ELECTRIC SHOCK 2-HOT+ 3-COLD- DO NOT OPEN RISQUE DE CHOC ELECTRIQUE AVIS: -NE PAS OUVRIR ~240V 50Hz 720W T8AL 250V CH 3 OUT... -
Page 8: Connections
5. CONNECTIONS 5.1 SPEAKER CONNECTIONS 70V 100V 70V 100V 70V 100V (4120A) (4120A) 100V LINE 70V LINE 70V/ 5.2 XLR CONNECTIONS... -
Page 9: Applications
6. APPLICATIONS REAR PANEL CONNECTIONS... -
Page 10: Block Diagram
7. BLOCK DIAGRAM... -
Page 11: Specifications
8. SPECIFICATIONS MODEL 4120A RATED POWER OUTPUT 4X120W SPEAKER OUTPUTS 4~16 ,70V/100V OUTPUTS NOISE <3mV IMPEDANCE 200:1 INPUT SENSITIVITY 775mV/0dB 50Hz~16KHz d istortion<1.5dB FREQUENCY RESPONSE S/N RATIO >15V/microsecond T.H.D <1% Copulsive wind cool form COOL METHOD Power, Signal, Protection, Peaking... -
Page 12: Dimensional Diagram
9. DIMENSIONAL DIAGRAM UNIT :mm 4120A 4-CHANNEL AMPLIFIER PROTECT POWER CLIP TEMP SIGNAL CH 1 CH 2 CH 3 CH 4 CH 1 OUT CH 2 OUT CH 1 IN CH 2 IN XLR BAL INPUT ¦¸ ¦¸ 1-GND RISK OF ELECTRIC SHOCK... - Page 13 PUBLIC ADDRESS SYSTEM VersionV0.1...
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