Gentec PA70W Manual de usuario
PA70W
40 Watt Power Amplifier
All Rights Reserved
Version: PA70W/100V_2014V1.3
User Manual
40W Power Amplifier
Safety Operation Guide
In order to guarantee the reliable operation of the equipments and safety of the staff,
please abide by the following proceeding in installation, using and maintenance:
1) The system must be earthed properly. Please do not use two blades plugs and
ensure the alternating power supply ranged from 100v to 240v and from 50Hz to
60Hz.
2) Do not put the switcher in a place of too hot or too cold.
3) As the power generating heat when running, the working environment should be
maintained fine ventilation, in case of damage caused by overheat.
4) Please cut off the general power switch in humid weather or left unused for long
time.
5) Before following operation, ensure that the alternating current wire is pull out of the
power supply:
Take off or reship any components of the equipment.
Take off or rejoin any pin or other link of the equipment.
6) As to non-professional or without permission, please DO NOT try to open the casing
of the equipment, DO NOT repair it on your own, in case of accident or increasing
the damage of the equipment.
7) DO NOT splash any chemistry substance or liquid in the equipment or around.
40W Power Amplifier
NOTICE: Please read this user manual carefully before using this product. Pictures
shown in this manual is for reference only, different model and specifications are
subject to real product.
This manual is only for operation instruction only, not for any maintenance usage.
The functions described in this version are updated till October 2014. Any
changes of functions and parameters since then will be informed separately.
Please refer to the dealers for the latest details.
All rights reserved. No part of this publication may be copied or reproduced
without permission.
All product function is valid till 2014-10-23.
40W Power Amplifier
Table of Contents
1. Introduction .................................................................................................................2
1.1 Introduction to 40 Watt Power Amplifier.............................................................2
1.2 Features ............................................................................................................2
1.3 Package Contents .............................................................................................2
2. Panel Description........................................................................................................3
2.1 Front Panel ........................................................................................................3
2.2 Introduction of Rear Panel.................................................................................4
3. System Connection.....................................................................................................5
3.1 Usage Precautions ............................................................................................5
3.2 System Diagram ................................................................................................5
3.3 Audio Signal Connection....................................................................................5
3.3.1 Audio Output............................................................................................5
3.3.2 Audio Inputs.............................................................................................6
3.4 System Applications...........................................................................................7
4. System Operations .....................................................................................................7
4.1 Operations of Front Panel..................................................................................7
4.1.1 Audio switching........................................................................................7
4.1.2 Volume/EQ controlling .............................................................................8
4.2 Operations of IR Remote ...................................................................................8
4.3 Operations of Control Software .........................................................................9
4.3.1 Connection with Computer ......................................................................9
4.3.2 Installation/uninstallation of RS232 Control Software ..............................9
4.3.3 Running Environment ............................................................................11
4.3.4 Function Settings................................................................................... 11
4.3.5 RS232 Communication Commands ......................................................12
5. Specifications............................................................................................................14
6. Panel Drawing ..........................................................................................................15
7. Troubleshooting and Maintenance............................................................................16
8. After-sales Service....................................................................................................17
40W Power Amplifier
2
1. Introduction
1.1 Introduction to 40 Watt Power Amplifier
40 Watt Power Amplifier is a 40 Watt power amplifier (Class-D) with output alternatively
at 70V or 100V. It has 2 stereo inputs (1x3.5mm jack for line in, 2xRCA for L&R), 1
digital input & 1 balanced MIC. It is integrated with powerful functions, including
ducking function, EQ control, MIC mixer etc, and MIC input supports 3 levels with
condenser MIC, dynamic MIC & line audio input.
As for power amplifier we have normally voltages at 70V and 100V for different
countries, but 40 Watt Power Amplifier is designed to integrate with both voltages to
meet different requirements.
1.2 Features
Mono audio output at 40Watt.
Switchable between 70V and 100V.
Ducking function.
16 ID codes for controlling between different 40 Watt Power Amplifier amplifiers.
3-level MIC input, supports condenser microphone, dynamic microphone and
wireless microphone.
MIC port can support balance/unbalance signal, suppress the external noise
effectively.
Two stereo audio inputs and one digital audio input, switchable by button, IR remote
& RS232.
Volume/Bass/Treble controllable by buttons, IR remote & RS232.
Fast switching speed for good performance.
Convection cooler, fan is not needed.
LED indicator, for power and working status.
Antistatic case design to provide good protection for long-term and stable
performance.
1.3 Package Contents
1 x 40 Watt Power Amplifier
2 x Mounting ears (separated from 40 Watt Power Amplifier)
4 x Screws
1 x Pluggable Terminal Block
1 x RS232 cable
1 x Power adapter (DC 24V)
40W Power Amplifier
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1 x Power Cord
4 x Plastic Cushions
1 x User manual
Note: Ensure the product and the accessories are all included, if not, please contact
with the dealers.
2. Panel Description
2.1 Front Panel
Figure 1 Front Panel
No. Name Function
①Audio Input
Selection
To select the input audio source, after choosing the audio
source, the corresponding LED indicator will be on. No.1 is
for dual mono audio input (2 RCA connectors for L&R), No.2
is for stereo audio input (3.5mm mini jack), and No.3 is for
digital fiber audio input.
②Audio
Control
Adjust the volume of the MIC, Line, or the level of Bass and
Treble with this button
③Volume
Adjustment
To turn up/down or mute the corresponding audio.
▽
▽▽
▽: Turn down the volume
△
△△
△: Turn up the volume
MUTE: Mute the output
40W Power Amplifier
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2.2 Introduction of Rear Panel
Figure 2 Rear Panel
No. Name Function
①Power
Indicator Turns red when power on.
②Microphon
e input port
3-pole captive screw connector for microphone input, the dial
switch in right side is to select the micro input kind, including
48V (for condenser microphone), MIC (for dynamic
microphone) and LINE (for line audio).
③Audio
Inputs
3.5mm mini jack for stereo audio input, it can be connected
with audio source device such as DVD player.
④ID Code 16 codes range from 0 to F (hexadecimal), works together with
the PC control software.
⑤IR To connect with the IR receiver, works together with the IR
remote.
⑥Power Port To connect with the power adapter (DC24V).
⑦2 x RCA Dual-mono audio input, which can be connected with audio
source device such as a PC.
⑧Digital
Audio Input
Fiber connector for digital audio input (PCM format only), it can
be connected with a device with fiber port, such as blue-ray
player.
⑨RS232
3-pole captive screw connector for serial control, it can be
connected with PC (Use a 3-pole captive to 9 pin female D
connector and serial control software) to control 40 Watt Power
Amplifier.
⑩Audio
Output
To connect with audio output devices, such as speakers (To
select 70V or 100V depends on the input voltage of the
speakers). COM is for grounding (GND).
40W Power Amplifier
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3. System Connection
3.1 Usage Precautions
1) No working with empty load is allowed.
2) Speakers must be connected before power on.
3.2 System Diagram
Figure 3 System Diagram
3.3 Audio Signal Connection
3.3.1 Audio Output
40 Watt Power Amplifier supports mono audio output, and the output voltage is 70V or
alterative 100V. With its dual-purpose design, it can be applied in different areas. The
end COM is for grounding. The amplifier to be connected is mono audio output with a
rated power at 40Watt, so 40 Watt Power Amplifier can be connected with several
speakers in parallel connection way (Total power mustn’t be more than 40Watt).
The following figure shows us how to connect with the speakers. Here we take the
100V/10W speakers for each as example.
MIC
PC 1
Blu-ray
DVD
Speaker
Speaker
Speaker
Speaker
PC
(100V/10W)
(100V/10W)
(100V/10W)
(100V/10W)
IR Remote
IR Receiver
40W Power Amplifier
6
Figure 4 Audio Output Connection
Note: Speakers to be connected should be with constant pressure.
3.3.2 Audio Inputs
40 Watt Power Amplifier provides with 2 stereo audio inputs, one microphone input and
one digital fiber audio input. The following figure shows the audio input ports.
Figure 5 Audio Input Ports
48V phantom power input
When the switch turns to “48V” (It has a good frequency characteristic, high input
impedance and high sensitivity in this mode), the MIC input will provide a 48V phantom
power. This is usually used for power supply for condenser microphone, Connection is:
“+” connects to positive, “-” connects to negative and “ ” to ground.
Note: In this mode, only condenser microphone can be connected with.
MIC input
When the switch turns to “MIC” (It has a low frequency characteristics, and wide
frequency response in this mode), the microphone input is used for connecting with
dynamic microphone. There are two different connections:
a) Unbalanced connection:
“+” and “ ” connect to ground, and “-” connects to signal.
COM
70V
100V
Speaker
Speaker
Speaker
Speaker
(100V/10W)
(100V/10W)
(100V/10W)
(100V/10W)
Dial Switch, to select the MIC input mode,
includes MIC (dynamic microphone), 48V
(condenser microphone) and LINE
(normal audio or wireless microphone).
40W Power Amplifier
7
“-” and “ ” connect to ground, and “+” connects to signal.
b) Balanced connection: “+” connects to positive, “-” connects to negative and “ ”
connects to ground.
LINE input
When the switch turns to “LINE” (It has a low frequency characteristics, and wide
frequency response in this mode), the microphone input is used for connecting with
normal audio or wireless microphone output. There are two different connections:
a) Unbalanced connection:
“+” and “ ” connect to ground, and “-” connects to signal.
“-” and “ ” connect to ground, and “+” connects to signal.
b) Balanced connection: “+” connects to positive, “-” connects to negative and “ ”
connects to ground.
Digital Audio Input
40 Watt Power Amplifier provides with a fiber optical port to connect with digital audio
source device. With the SPF optical fiber, the audio signal can be transmitted faster,
more stable, reliable, and can be transmitted over a long distance without distortion.
Notice: This digital audio input can support/decode PCM format signal only. If the
CD/DVD is DTS or AC3 format, please set the player to PCM format output before
connect to 40 Watt Power Amplifier.
3.4 System Applications
40 Watt Power Amplifier can be applied in different occasions, such as classroom,
small meeting room, lecture hall, bar and hotel etc.
4. System Operations
4.1 Operations of Front Panel
The buttons provides the control of volume/EQ control and switching. The LED
indicator will show the connecting status. The following content introduces audio
switching and EQ control in detail.
Operations: Press the corresponding button again for cyclic switching.
4.1.1 Audio switching
There are three switchable audio inputs, one 2xRCA input, one 3.5mm jack input, and
one digital fiber audio input, switchable through the buttons as below:
Figure 6 Audio Source Selection Button
Audio Source Selection:
1: Dual mono audio
2: Stereo audio
3: Digital fiber audio.
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