Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for ALFAtron ALF-PA2B
Summary of Contents for ALFAtron ALF-PA2B
- Page 1 ALFATRON ELECTRONICS GmbH GERMANY ALF-PA2B...
- Page 2 ALF-PA2B Preface Read this user manual carefully before using this product. Pictures shown in this manual are for reference only, different models and specifications are subject to real product. This manual is for operation instruction only, not for any maintenance usage. The functions described in this version are updated as of April 2020.
- Page 3 ALF-PA2B SAFETY PRECAUTIONS To ensure the best performance 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 ...
-
Page 4: Table Of Contents
ALF-PA2B Table of Contents 1. Product Introduction ....................1 1.1. Features ......................1 1.2. Package List ..................... 2 2. System Connection ..................... 3 2.1. Audio Output ..................... 3 2.1.1. Default Output: 2x20Watt@4Ohm ............3 2.1.2. Bridge Connection: 1x40Watt@8Ohm ............ 3 2.1.3. -
Page 5: Product Introduction
ALF-PA2B 1. Product Introduction The Alfatron PA2B is a compact-size digital amplifier (Class-D) with 3 inputs, 2 line in and 1 balanced MIC. Integrated functions include bridge connection, dual-mono, EQ control, microphone mixer etc. Excellent in varied applications, including classrooms, small meeting rooms, lecture halls, bars etc. -
Page 6: Package List
ALF-PA2B 1.2. Package List 1 x PA2B mini 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
ALF-PA2B 2. System Connection 2.1. Audio Output 2.1.1. Default Output: 2x20Watt@4Ohm The default output of the amplifier is 2x20Watt@4Ohm. Output connection is pictured below: 2.1.2. Bridge Connection: 1x40Watt@8Ohm The amplifier has the bridge connection, which would double the output power at 1x40Watt@8Ohm. -
Page 8: Dual-Mono Output
ALF-PA2B 2.1.3. Dual-mono Output The amplifier also has the function of double-mono output. It can sum up the left and right channel to be the mono audio output. In this way, both of the outputs are outputting the same mono audio. -
Page 9: Microphone Input
ALF-PA2B 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 is set to “48V”, the MIC input will provide 48V phantom power. This is usually used as the power supply for a condenser microphone, Connection is: “+”... -
Page 10: Panel Control
ALF-PA2B 3. Panel Control The panel buttons control the volume/EQ and switching. The following content introduces audio switching and EQ control in detail. 3.1. Audio Switching There are two switchable stereo audio inputs, one 2xRCA input, and one 3.5mm jack... -
Page 11: Ir Remote Control (Optional)
ALF-PA2B For example, to turn up the line volume, you should select the “LINE” first, and then press the button “ ”. 4. IR Remote Control (Optional) Audio Inputs Used to transmit the infrared signal sent by the 1: RCA dual-mono audio IR remote. -
Page 12: System Diagram
ALF-PA2B 5. System Diagram... -
Page 13: Rs232 Command
ALF-PA2B 6. RS232 Command After setting all required input and output devices according to the system connection introduction, connect a PC for control to the RS232 port. Then install the RS232 control software (e.g. docklight) into the control PC to send RS232 commands to control the amplifier. - Page 14 ALF-PA2B 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]. Volume of MIC: 50 61 degrees in total.
-
Page 15: Specifications
ALF-PA2B 7. Specifications Audio Input Input (2) Stereo Audio, (1) MIC (2) RCA, (1) 3.5mm Jack, Input Connector (1) Pluggable Terminal Block (3P, 3.81mm) Audio Output Output (1) Amplifier, (1) Stereo Audio (1) 3.5mm Jack, Output Connector (1) Pluggable Terminal Block (4P, 5.08mm) -
Page 16: Troubleshooting & Maintenance
ALF-PA2B 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, perhaps the input/output cables are broken, or the connectors have come loose, please change for another cable. -
Page 17: After-Sales Service
Mini Digital Amplifier 9. After-sales Service Should you experience problems using the ALF-PA2B, please refer to the manual and troubleshooting and maintenance section (8). Should the error persist, note that any transport costs of the equipment to the distributor are borne by the user during the warranty. - Page 18 Mini Digital Amplifier Limited warranty in respect of Alfatron Products Only 1.1 This limited warranty covers defects in materials and workmanship in this product. 1.2 Should warranty service be required, proof of purchase must be presented to the Company. The serial number on the product must be clearly visible and not have been tampered with in any way whatsoever.
- Page 19 Mini Digital Amplifier 1.10 The Company will, at its sole option, provide one of the following three remedies to whatever extent it shall deem necessary to satisfy a proper claim under this limited warranty: 1.10.1 Elect to repair or facilitate the repair of any defective parts within a reasonable period of time, free of any charge for the necessary parts and labor to complete the repair and restore this product to its proper operating condition.;...
Need help?
Do you have a question about the ALF-PA2B and is the answer not in the manual?
Questions and answers