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Mini Digital Amplifier

 

7

 

5.  Communication Protocol and Command Codes 

Communication Protocol

: RS232 Communication Protocol 

Baud rate: 9600          Data bit: 8          Stop bit: 1          Parity bit: none 

Command 

Function Description 

Feedback Code 

1A1. 

Switching the audio to input 1 

A: 1 -> 1   

2A1. 

Switching the audio to input 2 

A: 2 -> 1   

0A0. 

Mute Audio of MIC and Line out 

Mute 

1A0. 

Mute audio of MIC 

Mute MIC 

2A0. 

Mute audio of line out 

Mute LIN 

0A1. 

Unmute Audio 

Unmute 

3A0. 

Switch on Noise Gate 

Gate On 

4A0. 

Switch off Noise Gate 

Gate Off 

600% 

Checking the working status 

A: 1 -> 1   
Volume: 30   
Bass: 00   
Treble: 00   

601% 

MIC volume up 

Volume of MIC: 51 

602% 

MIC volume down 

Volume of MIC: 51 

603% 

Line volume up 

Volume of LINE: 51   

604% 

Line volume down 

Volume of LINE: 51 

605% 

Bass level up 

Bass of LINE: 04   

606% 

Bass level down 

Bass of LINE: 04   

607% 

Treble level up 

Treble of LINE: 04   

608% 

Treble level down 

Treble of LINE: 04   

609% 

Initialization, back to the default 
setting 

Init OK 

5[x][x]% 

Preset MIC volume, [xx] arranges 
from [00] to [60].   
61 degrees in total. 

Volume of MIC: 50   

7[x][x]% 

Preset line volume, [xx] arranges 
from [00] to [60].   
61 degrees in total. 

Volume of LINE: 50   

8[x][x]% 

Preset the bass level, [xx] arranges 
from [00] to [08]. 
9 degrees in total. 

Bass of LINE: 04 

9[x][x]% 

Preset the treble level, [xx] arranges 
from [00] to [08]. 
9 degrees in total. 

Treble of LINE: 04 

Notice: 

1: The letter inside bracket [ ] is the variable code, which is changeable. 

Summary of Contents for Pro MP-A2B

Page 1: ...MP A2B Mini Digital Amplifier All Rights Reserved Version MP A2B_2016V1 0 User Manual ...

Page 2: ...ent generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications It has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a commerc...

Page 3: ... install this product near water Do not put any heavy items on the extension cable in case of extrusion Do not remove the housing of the device as opening or removing housing may expose you to dangerous voltage or other hazards Install the device in a place with fine ventilation to avoid damage caused by overheat Keep the module away from liquids Spillage into the housing may result in fire electr...

Page 4: ... 2 2 1 3 Dual mono Output 2 2 2 Microphone input 3 2 2 1 48V phantom power input 3 2 2 2 MIC input 3 2 2 3 LINE input 3 3 Operation of the Control Panel and the IR Remote 4 3 1 Operation of the Control Panel 4 3 1 1 Audio switching 4 3 1 2 Volume EQ controlling 4 3 2 Usage of the IR Remote 5 4 System Diagram 6 5 Communication Protocol and Command Codes 6 6 Specification 8 7 Panel Drawing 9 8 Troub...

Page 5: ...nce signal suppress the external noise effectively Line audio output at 3 5mm jack with volume controllable Dual mono function User can sum up the stereo audio to two times mono audio MIC mixer function The microphone will be mixed to the line audio output and be controlled separately MIC input supports 48V phantom power dynamic MIC and wireless MIC Auto noise gate It keeps detecting the audio and...

Page 6: ...hm so user can connect the amplifier output in the regular way As the picture below 2 1 2 Bridge connection 1x40Watt 8Ohm The MP A2B has the bridge connection to double the output power at 1x40Watt 8Ohm It will sum up the input left channel and input right channel to be mono output and the power is up to 40Watt The bridge connection is 2 1 3 Dual mono Output The MP A2B also has the function of dou...

Page 7: ...one can be connected with 2 2 2 MIC input When the switch turns to MIC the microphone input is used for connecting with dynamic microphone There are two different connections 1 Unbalanced connection connects to ground and connects to signal connects to ground and connects to signal 2 Balanced connection connects to positive connects to negative and connects to ground 2 2 3 LINE input When the swit...

Page 8: ...are two switchable stereo audio inputs one 2xRCA input and one 3 5mm jack input switchable through the buttons as below 3 1 2 Volume EQ controlling The line volume and MIC volume can be controlled by the buttons The MIC Volume LINE volume LINE bass LINE treble will be selected by the buttons and controlled up down mute by the function buttons Please check the picture below For example to turn up t...

Page 9: ...tting out of control as there is no signal detected 3 5mm jack insert it into the specialized socket 3 5mm to connect the IR receiver with the amplifier Mute Mode MIC Mute the microphone volume LINE Mute the line volume SPEAKER Unmute Use to transmit the infrared signal send by the IR remote Audio Controlling Modes MIC turn up down the microphone volume LINE turn up down the line volume BASS bass ...

Page 10: ...Mini Digital Amplifier 6 4 System Diagram DVD Speaker2 MIC Laptop Speaker Speaker1 Speaker3 RS232 control panel MIC ...

Page 11: ...lume up Volume of MIC 51 602 MIC volume down Volume of MIC 51 603 Line volume up Volume of LINE 51 604 Line volume down Volume of LINE 51 605 Bass level up Bass of LINE 04 606 Bass level down Bass of LINE 04 607 Treble level up Treble of LINE 04 608 Treble level down Treble of LINE 04 609 Initialization back to the default setting Init OK 5 x x Preset MIC volume xx arranges from 00 to 60 61 degree...

Page 12: ...t Input 2 stereo audio 1 MIC Output 1 amplifier 1 stereo audio Input Connector 2 RCA 1 3 5mm jack 1 pluggable terminal block 3P 3 81mm Output Connector 1 3 5mm jack 1 pluggable terminal block 4P 5 08mm Input Impedance 10KΩ Output Impedance 50Ω stereo 4 8Ω Amplifier Audio General Frequency Response 20Hz 20KHz CMRR 70dB 20Hz 20KH z SNR 80dB at maximum output Bandwidth 20Hz 25KHz Stereo Channel Separ...

Page 13: ...MIC LINE 48V MIC 1 2 INPUTS OUTPUTS LOOP 1x40Watt 8 Ω 2x20Watt 4 Ω 87 mm 57 mm 99 mm 39 mm 12 mm 123 mm MIC LINE BASS TREBLE MUTE INPUT SEL MP A2B Mini Amplifier 1 2 Microphone Mixer 2x1 Stereo Audio with Line Out Automatic Ducking Process Bridge Connection 1x40Watt 8Ω 2x20Watt 4Ω ...

Page 14: ...ly there is something broken inside the unit please send it to the dealer for repairing 2 If the POWER indicator doesn t work or no respond to any operation please make sure the power cord connection is good 3 If the output sound is interfered please make sure the system is grounded well 4 If the static becomes stronger when connecting the audio connectors it probably due to bad grounding please c...

Page 15: ...pplied serial number has been altered or removed from the product Damage deterioration or malfunction caused by Normal wear and tear Use of supplies or parts not meeting our specifications No certificate or invoice as the proof of warranty The product model showed on the warranty card does not match with the model of the product for repairing or had been altered Damage caused by force majeure Serv...

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