Summary of Contents for Milestone pro MP-A250B
- Page 1 User Manual MP-A250B Mini Audio Amplifier All Rights Reserved Version: MP-A250B_2016V1.0...
- Page 2 Mini Audio Amplifier Preface 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. Trademarks Product model and logo are trademarks.
- Page 3 Mini Audio 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 ...
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Page 4: Table Of Contents
Mini Audio Amplifier Contents 1. Introduction ....................... 1 1.1 Introduction to MP-A250B ................1 1.2 Features ......................1 1.3 Package List ...................... 1 2. Panel Description ..................... 2 2.1 Front Panel ......................2 2.2 Rear Panel ......................3 3. System Connection ....................4 3.1 Usage Precautions .................... -
Page 5: Introduction
1. Introduction 1.1 Introduction to MP-A250B MP-A250B is a compact-size digital amplifier (Class-D) with 3 inputs (1 L+R stereo audio, 1 analog audio, 1 optical fiber audio). It features switchable stereo or mono output, and boasts complete EQ adjustment and intuitive work status display, making it an ideal addition to a classroom or conference room application. -
Page 6: Panel Description
2. Panel Description 2.1 Front Panel LINE BASS INPUT SEL CONTROL VOLUME Figure 2- 1 Front Panel of MP-A250B Name Description Power LED Illuminate red when powered on ① Input Selection Press to select any one of the 3 inputs, indicators will light... -
Page 7: Rear Panel
RS232 IR IN AUDIO OPTICAL LOOP DC 33V Figure 2- 2 Rear Panel of MP-A250B Name Description TCP/IP: (optional) connect with control device to enable IP control via web-based GUI& TCP/IP communication software; Indicators will blink when connected to control device... -
Page 8: System Connection
Step4. (optional) Connect a control device (e.g. a PC) to RS232 port to enable serial control. Step5. (optional) Connect a control device (e.g. a PC) to TCP/IP port to enable IP control. Step6. Plug DC 33V power adaptor to the power port of MP-A250B. -
Page 9: Audio Output Connection
Mini Audio Amplifier 3.4 Audio Output Connection 3.4.1 Stereo output (default): 2x50Watt@8Ohm Dial the switcher to STEREO to enable 2 50Watt@8Ohm stereo output mode. Connect the amplifier regularly (as shown in the following figure): Figure 3- 2 Stereo Output Connection 3.4.2 Mono output: 1x100Watt@4Ohm To enable mono 1x100Watt@4Ohm output, dial the switcher to MONO, and connect output devices as the figure below:... -
Page 10: Loop Connection
Mini Audio Amplifier 3.5 Loop Connection MP-A250B boasts a LOOP port for audio signal loop output, max 255 units can be looped within the same operation system. Connect MP-A250B like this: Speaker Speaker Speaker Laptop Figure 3- 4 Loop Connection Then audio signal sent to the first MP-A250B is cascaded to other connected MP-A250B, which enables multiple MP-A250B share the same audio source. -
Page 11: System Control
Mini Audio Amplifier 4. System Control 4.1 Front Panel Button Control Front panel buttons provides direct audio control including input source selection and audio effect adjustment. Figure 4- 1 Front Panel Buttons Operation Format: Input Sel + Control + Volume Knob (indicators and volume bar will display real-time operation) ... -
Page 12: Ir Control
Mini Audio Amplifier 4.2 IR Control Connect an IR receiver (5V, without carrier) to IR IN port on the rear panel, users are able to control the amplifier by the included IR remote (see as below): Input Selection Mute Unmute Volume Control Including LINE, BASS and TREBLE volume... -
Page 13: Rs232 Control
Unused Unused Unused Connect MP-A250B to the control device (e.g. a PC) with RS232 cable and set the parameters in the right manner, the control device is capable to control MP-A250B via designed software. 4.3.1 Installation/uninstallation of RS232 Control Software Installation: Copy the control software file to the computer connected with MP-A250B. - Page 14 Mini Audio Amplifier Parameter Configuration area Parameter Configuration area Monitoring area, indicates Monitoring area, indicates whether the command whether the command sent works. sent works. Command Sending area Command Sending area Please set the parameters of COM number, bound rate, data bit, stop bit and the parity bit correctly, only then will you be able to send command in Command Sending Area.
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Page 15: Rs232 Communication Commands
Mini Audio Amplifier 4.3.3 RS232 Communication Commands 1) Case-sensitive. 2) “[“, “]” in the commands are only for easy recognition and not necessary in real operations. Other symbols including “.” “%” are parts of the commands. 3) Feedbacks listed in the column “Feedback” are only for reference, feedbacks may vary according to different operations. -
Page 16: Tcp/Ip Control
Controlled by PC(s) in LAN Connect MP-A250B, a router and several PCs to setup a LAN (as shown in the following figure). Set the network segment of MP-A250B to the same as the router’s, then PCs within the LAN are able to control MP-A250B. -
Page 17: Control Via Tcp/Ip Communication Software
Step3. Set the MP-A250B’s network segment to the same as the router. Step4. Set the PC’s network segment to the original ones. Step5. Connect the MP-A250B and PC(s) to the router. PC(s) within the LAN is able to control the MP-A250B asynchronously. -
Page 18: Control Via Web-Based Gui
Mini Audio Amplifier 2) After connect successfully, we can enter commands to control the MP-A250B , as below: Enter your command here. Commands are the same with RS232 commands listed in 4.3.3 RS232 Communication Commands Here you will receive the feedback when a command is sent. - Page 19 Mini Audio Amplifier Type the right name and password in relative column: Name: admin; Password: admin (default setting, changeable via GUI) Click LOGIN, it will show the audio selection interface as shown below: Audio Selection: Figure 4- 4 Network Control In this interface, you can: ...
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Page 20: Port Management
Mini Audio Amplifier Figure 4- 5 Audio Selection In this interface, you can: Configure network settings: IP: support DHCP and Static IP, choose demanded state by clicking the button DHCP: IP Address, subnet mask and gateway are fixed in this mode. Static IP: set IP Address, subnet mask and gateway manually. -
Page 21: Specification
Mini Audio Amplifier 5. Specification Input Output 1x L+R stereo audio 1x LOOP Input Signal 1x 3.5mm analog audio Output Signal 2x Stereo audio/ 1 Mono 1x Optical Fiber audio audio 2x RCA 1x 3.5mm jack Connectors 1x 3.5mm TRS plug Connectors 1x 4-pin 5.08mm 1x SPDIF... -
Page 22: Panel Drawing
An alog and Dig ital Audio I ntput Co ntrol By Rs232, IR, Pa nel Butt on Bri dge Conn ection ,1x100 Watt@4 Ω Ad just Bass, Treble and Volume via A Kno b MP-A250B Audio Amplifier 2x50W LIN E BASS INPUT SEL... -
Page 23: Troubleshooting & Maintenance
Set the network segment of Control device and MP-A250B control device to the same are on different network segment with MP-A250B ’s. Fail in TCP/IP control Set the network segment of Network segment of MP-A250B MP-A250B to the same is different with LAN’s. -
Page 24: After-Sales Service
Mini Audio Amplifier 8. After-sales Service If there appear some problems when running the device, please check and deal with the problems reference to this user manual. 1) Product Limited Warranty: We warrant that our products will be free from defects in materials and workmanship for three years, which starts from the first day the product leaves warehouse (check the SN mark on the product).
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