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Mini Digital Amplifier, with MIC Mixer and EQ 

               

 

 

4.  Specification 

 

Audio Input 

Audio Output 

Input 

2 stereo audio,   

1 MIC 

Output 

1 amplifier,   

1 stereo audio 

Input Connector 

2 RCA 

1 3.5mm jack 

1 6.5mm jack 

Output Connector 

1 3.5mm jack

 

1  captive  screw  connector,  4 

pole 

Input Impedance 

>10KΩ 

Output Impedance 

50Ω/stereo, 4~8Ω/Amplifier 

Audio General 

Frequency 

Response 

20Hz ~ 20KHz 

CMRR 

>70dB@20Hz~20KHz 

SNR 

80dB at maximum output   

Bandwidth 

20Hz ~ 25KHz 

Stereo 

Channel 

Separation 

>75dB@20Hz to 20KHz 

THD + Noise   

1%@1KHz,  0.3%@20KHz  at 

nominal level 

Voltage Gain 

32dB 

Power Output 

20 Watts X 2 (4 Ohms) 

Control Parts 

Serial Control Port 

RS-232,  9-pin  female  D 

connector   

Pin Configurations 

2 = TX, 3 = RX, 5 = GND 

NOTE: 

All nominal levels are at ±10%. 

 

 

Содержание MMA220

Страница 1: ...220 Mini Digital Amplifier with EQ Mixer Index 1 General Instruction 2 2 Product Picture 2 3 Features 3 4 Specification 4 5 Audio Connection 5 6 Buttons Controlling 6 7 RS232 Communication Protocol 8...

Страница 2: ...ith EQ control and MIC mixer function It is compact size but powerful functions including the bridge connection dual mono EQ control microphone mixer etc It has a good application in different places...

Страница 3: ...the audio and MIC input and reducing the power consumption when there is no inputs coming Two stereo audio inputs switchable by button remote or RS232 Volume Bass Treble controllable by buttons or RS2...

Страница 4: ...pole Input Impedance 10K Output Impedance 50 stereo 4 8 Amplifier Audio General Frequency Response 20Hz 20KHz CMRR 70dB 20Hz 20KHz SNR 80dB at maximum output Bandwidth 20Hz 25KHz Stereo Channel Separ...

Страница 5: ...the picture below 5 2 Bridge connection 1x40Watt 8Ohm The MMA220 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...

Страница 6: ...oth of the outputs are showing the same mono audio The connection is 6 Buttons Controlling The buttons provides the control of volume EQ control and switching 6 1 Audio switching There are two switcha...

Страница 7: ...e 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 the line volume you should sele...

Страница 8: ...MIC Mute MIC 2A0 Mute audio of line out Mute LIN 0A1 UnMute Audio UnMute Audio 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...

Страница 9: ...Treble of LINE 04 Notice 1 The letter inside bracket is the variable code which is the changeable 2 The bracket is not included to the RS232 commands 3 Any dot after the letters is part of the comman...

Страница 10: ...Mini Digital Amplifier with MIC Mixer and EQ 10 8 System Diagram 2x20Watt 4Ohm Looping connection 1x40Watt 8Ohm...

Страница 11: ...Mini Digital Amplifier with MIC Mixer and EQ 11 9 Panel Drawing Unit mm...

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