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Public Address System
Four-Channel Matrix Power Amplifier MP906
MP912
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Operation Instructions
Welcome to use the public address system manufactured by DSPPA Company. For the better application of this
equipment, please read the operation instruction carefully prior to use.
G u a n g z h o u D S P PA A u d i o C o . , L t d .
http: //www.DSPPA.com
http://www.dsppatech.com
This page is left blank for keeping note by user
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About Operation Instruction
This operation instruction shall come into effect on the date on which the development of
the four-channel matrix power amplifier MP906/MP912 equipment is completed. The
operation instruction contains the systematic introduction to the four-channel matrix
power amplifier MP906/MP912 equipment, precautions for use, instruction to connection
of system, and instruction to operation of product, and so on. The user shall read this
operation instruction carefully prior to connection, installation and use, and shall operate
in accordance with the instructions herein.
The attention must be paid to the instructions with such identification on the back panel of the
machine. Please use or operation the machine following such instruction.
Please keep this operation instruction for the checking in the future.
MP—V0.4
Facture 2014-10-17
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Warning
In order to prevent the personal injury to user and other persons, the damage to equipment or loss of assets,
please abide by the following basic precautions:
Check the power line for damage; please do not
unplug by pulling the power cord but unplug
directly; otherwise, it will lead to electric shock,
short circuit or fire.
During the process of use, do not block the vent. It is
required to keep all the vents unblocked in order to
prevent the overheating.
Please do not put this equipment in the
heavily dusty, shocking, extremely cold, or
hot environment
Please do not put any weight on this equipment. Do
not operate switch and button or connect the external
audio source equipment with overexertion.
Prevent the entry of any foreign matter (e.g.
paper and metal) through the clearance or opening
of the equipment into it; in such case, please
disconnect the power supply immediately.
Do not try to remove any component in the
equipment or transform it in any way.
In case of the sudden interruption, or abnormal
smell, or smoking during the operation of the
machine, please unplug the power supply to prevent
the electric shock, fire and other accidents, and ask
the professionals to repair the equipment.
Smell of scorching
Please make sure to unplug the AC power line or
switch off the socket on the wall to achieve the zero
energy consumption if this equipment is out of service
for a long term.
This mark indicates what is prohibited. This mark indicates what must be done.
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Table of Contents
I. INTRODUCTION TO PRODUCT
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1.1 DESCRIPTION OF EQUIPMENT
1.2 PERFORMANCE CHARACTERISTICS
II. DESCRIPTION OF APPEARANCE
2.1 DESCRIPTION OF FRONT PANEL
2.2 DESCRIPTION OF REAR PANEL
III. INSTRUCTION TO CONNECTION
PACKING LIST
PERFORMANCE SPECIFICATION
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2
2
2
2
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* * Four-Channel Matrix Power Amplifier
I. Introduction to Product
1.1 Description of Equipment
MP906/MP912 four-channel matrix power amplifier is a kind of cost-effective professional intelligent address
1.2 Performance Characteristics
2 channels of line input, each of which may adjust the volume and tune independently;
3 channels of microphone balanced input, each of which may adjust the gain and tune independently with the
optional +48V phantom power supply;
4 channels of remote paging microphone inputs (Linking up to 10 equipments) and 1 channel of telephone
signal input (Adjustable volume); the remote paging microphone is connected to this equipment with the
crystal plug, and this equipment is connected to the telephone line with the telephone socket, i.e. this
equipment is an slave machine connected to this telephone set;
Fire alarm signal (Adjustable volume) and bell sound source (Adjustable volume);
With built-in MP3 module, play mainstream 32G U-disks and the documents in the formats of MP3, WMA,
WAV and ACC transferred through the bluetooth;
All the sound sources have the function of matrix four-channel output;
Priority level (Default): AUX1---siren---telephone---remote paging microphone 1, 2, 3 and 4---bell---MP3,
AUX2, AUX3, AUX4, AUX5; the priorities of AUXI and telephone are exchangeable through the
“PRIORITY” terminal on the rear panel; with regard to the priority, the hard priority is used for siren,
telephone and remote paging microphone, and the soft priority is used for AUX 1 and bell; the other
remaining sound sources may be mixed into any channel of output simultaneously;
Four channels of line output;
Four channels of power output, each of which has its own 4-16Ω terminal, 70V terminal, and 100V terminal;
The power amplifier has the DC output protection, overload protection, short-circuit protection, and overheat
protection;
LED indication, level indication, and protection indication;
1 channel of 1W/8Ω adjustable volume, which is used to monitor the four channels of line output;
1 channel of RS232 interface, which is used to expand the computer to control this equipment.
system combining the luxurious and high-grade aluminum-alloy panel with standard and exquisite case with an
elegant appearance, and also suitable for household, factory, school, hospital, shop and other commercial
application. The amplification system of this equipment is designed with imported power tube, resulting in the
strong power, wide frequency band, low noise, high fidelity and quality at the level of performance. In the
equipment, there are four channels of power output in order to facilitate the user to access the back-end
loudspeaker. With the perfect and reliable DC output protection, overload protection, short-circuit protection, and
overheat protection, the safety performance of this equipment is improved. The technical essence of this product is
focused on the super adaptability and perfect performance.
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* * Four-Channel Matrix Power Amplifier
II. Description of Appearance
2.1 Description of Front Panel
MATRIX MIXER AMPLIFER MP912
VOLUME
CH1 CH2 CH3 CH4
DISTRIBUTOR
VOLUME
PROT CH3
VOLUME
BASS TREBLE CH1 CH2
CH3 CH4
AUX 1
AUX LEVEL
MONITOR CHIME
VOLUME
SIREN
MP3
VOLUME
VOLUME
CH4
VOLUME
CH1
VOLUME
CH2
VOLUME
BASS TREBLE
AUX 2
VOLUME
BASS TREBLE
AUX 3
VOLUME
BASS TREBLE
AUX 4
VOLUME
BASS TREBLE
AUX 5
VOLUME
CH1 CH2
CH3
CH4
TEL
MODE
CH3
CH4CH2CH1
MP3/BLUETOOTH
BASS TREBLE
PROT
PROTPROT
10
8
6
4
2
CH2
POWER
CH1 CH3 CH4
CALL STATION
CH2CH1 CH3 CH4
CH1 CH2
CH3 CH4
CH1 CH2
CH3 CH4
CH1 CH2
CH3 CH4
CH1 CH2
CH3 CH4
10
8
6
4
2
10
8
6
4
2
10
8
6
4
2
1 2 3 456
7
8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29
1 Channel CH1 level indicator lamp
Indicate the input level of this channel, and for
channel CH2, CH3, CH4 and so on.
2 Channel CH1 power amplifier protection
indicator lamp
When using this channel, this indicator lamp is
alight, and for channel CH2, CH3, CH4 and so
on.
3 Channel CH1 volume adjustment knob
Turn it clockwise to increase the volume, and for
channel CH2, CH3, CH4 and so on.
4 Channel monitoring selection key
Press this key to select channel CH1, CH2, CH3
and CH4 in turn, and the corresponding indicator
lamp will be alight; in such case, adjust the
monitoring volume of this channel.
5 Channel monitoring volume adjustment knob
Press key 4 to select the channel, and then turn
this button to adjust the monitoring volume of
this channel.
6 Channel monitoring selection indicator lamp
When pressing key 4 to select the channel, the
corresponding channel indicator lamp will be alight.
7 Channel bell volume adjustment knob
Press the key 8 to turn on the bell; after pressing
the key 9 to select the channel, turn this knob to
adjust the bell volume of this channel.
8 Channel bell turn-on key
Press this key to turn on the bell.
9 Channel CH1 bell on-off key
Press this key, and the indicator lamp is alight,
indicating that this channel is selected at this
time, and then adjust the volume of the channel
bell. Press this key against to turn it off, and for
CH2, CH3, CH4 and so on.
10 Channel CH1 bell selection indicator lamp
Press the key 8 to turn on the bell; press the key
8 and the indicator lamp is alight, and then select
this channel, and for CH2, CH3, CH4 and so on.
11 Siren volume adjustment knob
Turn it clockwise to increase the volume.
12 Siren on-off key
Remove the white transparent shield and press
this key to give the alarm.
13 MP3 display screen
Display the playing.
14 MP3 control key
: Play/pause;
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* * Four-Channel Matrix Power Amplifier
: Previous song;
: Next song;
: MP3 and bluetooth switching key.
15 USB interface
Support 32UG disk.
16 Channel CH4 playing indicator lamp
When the Channel CH4 is playing MP3 or
bluetooth program, the corresponding channel
indicator lamp is alight, and for channel CH1,
CH2, CH3 and so on.
17 Channel CH4 program playing on-off key
Press this key and indicator lamp 16 will be
alight, indicating that channel CH4 is selected,
and for channel CH1, CH2, CH3 and so on.
18 MP3/bluetooth bass adjustment knob BASS
Adjust this knob with screwdriver.
19 MP3/bluetooth treble adjustment knob TREBLE
Adjust this knob with screwdriver.
20 MP3/bluetooth volume adjustment knob
Press key 17 to select the channel so as to adjust
the volume of such channel.
21 Auxiliary output AUX1 bass adjustment knob
BASS
Adjust this knob with screwdriver, and for AUX2,
AUX3 and so on.
22 Auxiliary output AUX1 volume adjustment knob
Press key 25 to select the channel so as to adjust
the volume of such channel.
23 Auxiliary output AUX1 treble adjustment knob
TREBLE
Adjust this knob with screwdriver, and for AUX2,
AUX3, AUX4, AUX5 and so on.
24 Auxiliary output AUX1 channel CH4 indicator
lamp
Press the key 25 to select the channel, and this
indicator lamp is alight; press this key again, the
indicator lamp is off. Repeat the same operation
for channel CH1, CH2, and CH3, and for AUX2,
AUX3, AUX4, AUX5 and so on.
25 Auxiliary output AUX1 channel CH4 on-off key
Press this key and the corresponding indicator
lamp 24 is alight, indicating the channel CH4 is
turned on. Repeat the same operations for channel
CH1, CH2, and CH4, and for AUX2, AUX3, AUX4,
AUX5 and so on.
26 Power switch
27 Power indicator lamp
28 Remote paging microphone indicator lamp
Indicate whether the corresponding channel is
turned on or not.
29 Telephone signal channel indicator lamp
Indicate whether the corresponding channel is
turned on or not.
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* * Four-Channel Matrix Power Amplifier
2.2 Description of rear panel
AUX3AUX2AUX1
GAIN GAIN GAIN
PHANTOM MIC PHANT OM MIC PHANTOM MIC
AUX4 AUX5
~220V/50Hz/10A
CH1 CH2 CH3 CH4
AUX OUTPUTS
CALL STATION
ADDRESS VOLUMEIN
PRIORITY
RS232
TEL
100V
70V
4-16?
CH1
ZONE OUTPUTS
COM
100V
70V
4-16?
CH2
COM
100V
70V
4-16?
CH3
COM
100V
70V
4-16?
CH4
COM
8?
MONITOR
1 32 4
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION!
MP906
F4AL250V F6AL250V
MP912DSPPA
F A
16V
22V4-16?
FUSE TYPE
Nur Sicherung 250V
Use Only With A 250V Fuse
Employer Unlquement Avec
Fusible De 250V
1 2 3 4
ON
1 2
3
4 5 6 7
8 9 10 11 12 13 14
1 Power line socket
Connect ~220V/50Hz power supply.
2 Priority level adjustment terminal PRIORITY
Please see description of performance
characteristics for priority level in details.
3 Monitoring terminal
1W/8Ω adjust the volume and monitor the output
of the four channels of lines.
4 Telephone signal input module
ADDRESS VOLUMEIN
TEL
1 2 3 4
ON
a b c
a Address dial-up
b Telephone line socket
c Volume adjustment knob
5 Matrix 4-channel output interface
Four-channels of power output, each of which
has independent 4-16Ω terminal, 70V terminal,
and 100V terminal. Connect the loudspeaker.
6 RS232 interface
It is used to expand the computer to control this
equipment.
7 Remote paging microphone interface
4-channel remote paging microphone input
(Linking up to 10 equipments)
8 AUX output interface
4-channel line output.
9 AUX1 input gain adjustment knob
And for AUX2, AUX3 and so on.
10 Microphone and phantom power supply
switching key
3-channel microphone balanced input, each of
which can adjust the gain and volume and tune
independently with optional +48V phantom
power supply.
11 AUX1 input interface
Connect microphone and other external sound
sources, and for AUX2, AUX3 and so on.
12 AUX4 input interface
Connect other external sound sources.
13 AUX5 Input interface
Connect other external sound sources.
14 Fan outlet
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* * Four-Channel Matrix Power Amplifier
III. Instruction to Connection
AUX3AUX2AUX1
GAIN GAIN GAIN
PHANTOM MIC PHANTOM MIC PHANTOM MIC
AUX4 AUX5
~220V/50Hz/10A
CH1 CH2 CH3 CH4
AUX OUTPUTS
CALL STATION
ADDRESS VOLUMEIN
PRIORITY
RS232
TEL
100V
70V
4-16?
CH1
ZONE OUTPUTS
COM
100V
70V
4-16?
CH2
COM
100V
70V
4-16?
CH3
COM
100V
70V
4-16?
CH4
COM
8?
MONITOR
1 32 4
RISK OF EL ECTRIC SHOCK
DO NOT OPEN
CAUTION!
MP906
F4AL250V F6AL250V
MP912DSPPA
F A
16V 22V4-16?
FUSE TYPE
Nur S icherung 250V
Use Only With A 250V Fuse
Employer Unlquement Avec
Fusible De 250V
1 2 3 4
ON
MIC
CD player
Pure driver
Monitoring
CM12
Telecommunication
Junction
Telephone
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* * Four-Channel Matrix Power Amplifier
Precautions for safety in use
1. Precautions for safety in use
Before connecting the system line properly, do not insert the power plug of this equipment into the grid.
Ensure the voltage input to the equipment shall be fully consistent with the voltage of this equipment to
prevent the risk in the burning of the equipment.
There is the hazardous voltage in the machine, which is sufficient to cause the electric shock to the person.
Please do not open the machine housing without authorization to prevent the hazard of electric shock.
In the event that the power supply to this equipment is turned off, the machine is not fully disconnected with
the power supply of the grid. For the purpose of safety, please pull the power plug out of the socket when the
equipment is not in service.
Please do not put the equipment in the extremely cold or hot place.
Ensure the good ventilation in the working environment of the equipment, to prevent the damage to the
equipment due to the heating in working and excessively high temperature.
In the rainy and humid days or if the machine is not in service for a long term, please pull out the power plug.
Before removing or reassembling any part of the equipment, disconnecting or reconnecting any electrical
plug or other connections of the equipment, be sure to pull out the power plug to ensure the full
disconnection of the equipment with the grid.
In case of any fault in the equipment, the non-professional person shall not disassemble the housing for repair
without the approval, in order to prevent accident or aggravate the damage to the equipment.
Do not put any corrosive chemicals nearby or on the equipment.
In case of the installation and operation according to this instruction, the company will provide the free
warranty service (Including replacement of parts free of charge) for any problem in the normal operation for
three years since the date of purchase.
In case of the warranty, the user shall show the user’s voucher of warranty card and the invoice as the
certificate.
In any of the following cases, the free warranty shall not be applicable:
1. The damage to the product due to the incorrect installation, use or handling;
2. The damage to the product due to the abnormal conditions (e.g. excessively high power voltage or ambient
humidity);
3. The damage to the product due to natural and man-made disaster and other accidents;
4. The number on the product body is changed, altered or removed;
5. The product has been repaired or refitted by the person other than those authorized by the company;
Please keep the operation instruction and warranty card properly.
For the issue or matter not covered herein, please contact the distributor or visit http://www.DSPPA.com.
In case of any fault occurred during the period of warranty, please contact the service personnel of our
company (or distributor); our company will not take responsibility for the damage due to the unauthorized
disassembly or the repair by the person other than the technicians of our company.
2. Precautions for after-sales service
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* * Four-Channel Matrix Power Amplifier
4
Packing List
No.
List
Quantity
1
Power amplifier
1 set
2
Warranty card
1 copy
3
Certificate
1 copy
4
Operation instruction
1 copy
5
10A GB power line
1 piece
6
1500MM double-modulator audio line
1 piece
7
6.35R lotus plug
2 pieces
8
4P lockable green plug/2ERJKM-5.08-4P
4 pieces
9
2P green plug/2ERJK3.81-2P
2 pieces
10
H21-612 remote controller
1 piece
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* * Four-Channel Matrix Power Amplifier
Performance specification
Type
MP906
MP912
Rated output power
60W×4
120W×4
Loudspeaker output
4-16Ω, 70V, 100V
Input sensitivity and input
impedance
AUX1, AUX2, AUX3: (3±0.5mV/600Ω) ~ (300±50mV /10KΩ) balanced input;
AUX4, AUX5: 300±50 mV /10 KΩ unbalanced input;
TEL: 300±50mV /10 K Ω;
CALL STATION1, 2, 3: 2000±100 mV/10KΩ balanced input
Tune
Bass 100Hz ±10±2 dB;
Treble 10000H ±10±2dB;
Frequency response
80Hz~16KHz
Signal to noise ratio
≥75 dB
AUX1---4 output level
2V/600 Ω balanced output
MP3
Play documents in the formats of MP3, WMA, WAC and ACC stored in 32GU
disk or transferred by bluetooth
Dimension of equipment
(L×W×H mm)
483×440×132mm
Dimension of packing
(L×W×H mm)
550×550×215mm
Net weight
25.5kg
28kg
Gross weight
28kg
30.5kg
Attention
If the power switch of the equipment is “off”, the machine is not disconnected to the grid; for the purpose of
safety, please pull the power line plug out of the socket if this equipment is not in service.
This equipment shall not suffer from water dripping or spraying. Do not place the vase full of water onto the
equipment.
Do not open the cover plate of the machine without authorization to prevent electric shock. The repair shall
be conducted by the professional with professional certificate if necessary.
The terminal marked with in the equipment indicates the hazardous electrification. The connection of
such terminal shall be completed by the trained personnel.
This equipment is connected to the power supply of the grid with the power line plug; in case of any fault or
risk in the equipment, pull out the power line plug to disconnect the connection between the equipment and
the grid; therefore, the power line plug shall be put in the place easy for plug-in/out of the power line.
Guangzhou DSPPAAudio Co., Ltd.
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