Summary of Contents for Audio General PA2X20
- Page 1 User Manual PA2X20 Mini Digital Amplifier All Rights Reserved Version: PA2X20_2017V1.0...
- Page 2 Mini Digital Amplifier Preface Read this user manual carefully before using the product. Pictures shown in this manual are for reference only, different models 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 is updated till December 15, 2017.
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Page 3: Safety Precautions
Mini Digital Amplifier SAFETY PRECAUTIONS To insure the best from the product, please read all instructions carefully before using the device. Save this manual for further reference. Unpack the equipment carefully and save the original box and packing material for possible future shipment ... -
Page 4: Table Of Contents
Mini Digital Amplifier Table of Contents 1. Introduction ......................... 1 1.1. Introduction to Mini Digital Amplifier ..............1 1.2. Features ....................... 1 1.3. Package List ......................2 2. System Connection Introduction ................. 3 2.1. Audio Output ......................3 2.1.1. Default output: 2x20Watt@4Ohm ..............3 2.1.2. -
Page 5: Introduction
Mini Digital Amplifier 1. Introduction 1.1. Introduction to Mini Digital Amplifier The Mini Digital Amplifier is a compact-size digital amplifier (Class-D) with 3 inputs (2 line in and 1 balanced MIC). It is integrated with powerful functions, including bridge connection, dual-mono, EQ control, microphone mixer etc. It has a good application in different places, including classroom, small meeting room, lecture hall, bar, pub etc. -
Page 6: Package List
Mini Digital Amplifier 1.3. Package List 1 x Mini Digital Amplifier 2 x Pluggable Terminal Blocks 1 x RS232 Cable 1 x Power Adapter 1 x Power Cord 4 x Plastic Cushions 1 x User Manual ：... -
Page 7: System Connection Introduction
Mini Digital Amplifier 2. System Connection Introduction 2.1. Audio Output 2.1.1. Default output: 2x20Watt@4Ohm The default output of amplifier is 2x20Watt@4Ohm, so user can connect the amplifier output in the regular way. As the picture below: Connecting the four pins, like this 2.1.2. -
Page 8: Microphone Input
Mini Digital Amplifier Connecting the four pins, like this 2.2. Microphone input The microphone input of Mini Digital Amplifier has three modes, and different modes use different connections, as the picture below: 2.2.1. 48V phantom power input When the switch turns to “48V”, the MIC input will provide a 48V phantom power. This is usually used for power supply for condenser microphone, Connection is: “+”... -
Page 9: Line Input
Mini Digital Amplifier 2.2.3. LINE input When the switch turns to “LINE”, the microphone input is used for connecting with normal audio or wireless microphone output. There are two different connections: 1) Unbalanced connection: “╧” connects to ground, and “-” connects to signal. “╧”... -
Page 10: Operation Of The Control Panel And The Ir Remote
Mini Digital Amplifier 3. Operation of the Control Panel and the IR Remote 3.1. Operation of the Control Panel The buttons provide the control of volume/EQ control and switching. The following content introduces audio switching and EQ control in detail. 3.1.1. -
Page 11: Usage Of The Ir Remote
Mini Digital Amplifier Firstly to Then to turn select the down/up the function level, or from this mute the menu. output. For example, to turn up the line volume, you should select the “LINE” first, and then press the button “ ”. - Page 12 Mini Digital Amplifier IR receiver head, works in 3.5mm jack, insert conjunction with the IR it into the remote. Please point the IR specialized socket remote at the IR receiver (3.5mm) to connect when use, to avoid getting out the IR receiver with of control as there is no signal the amplifier detected.
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Page 13: System Diagram
Mini Digital Amplifier 4. System Diagram... -
Page 14: Communication Protocol And Command Codes
Mini Digital Amplifier 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. - Page 15 Mini Digital Amplifier Notice: 1: The letter inside bracket [ ] is the variable code, which is changeable. 2: The bracket [ ] is not included to the RS232 commands. 3: Any dot “.” after the letters is part of the commands. Example 1: Switching the input 2 to the line out, RS232 command is: [2A1.] Example 2:...
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Page 16: Specification
Audio Output Output (1) Amplifier; (1) Stereo audio (1) 3.5mm jack; (1) Pluggable terminal block (4P, Output Connector 5.08mm) 50Ω/stereo; 4~8Ω/Amplifier Output Impedance Audio General Frequency Response 20Hz ~ 20KHz CMRR >70dB@20Hz~20KHz 80dB at maximum output Bandwidth 20Hz ~ 25KHz Stereo Channel >75dB@20Hz to 20KHz... -
Page 17: Panel Drawing
Mini Digital Amplifier 7. Panel Drawing... -
Page 18: Troubleshooting & Maintenance
Mini Digital Amplifier 8. Troubleshooting & Maintenance 1) When there is no output audio: Check if there is any signal at the input. Check if there is any signal at the output. We can check these by using an oscilloscope or a multimeter. If there is no signal input/output, maybe the input/output cables broken or the connectors loosen, please change for another cable. -
Page 19: Warranty Service
Mini Digital Amplifier 9. Warranty Service If there is any question about the need for service, please call technical support at 1-267-288-0300. Before sending a product back for repair, please obtain a return authorization by calling customer service or by emailing support@audiogeneral.com. Please have a copy of your invoice with the serial number ready before calling.
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