ALPOWL 4-Channel Professional Audio Mixer User Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your ALPOWL 4-Channel Professional Audio Mixer. Please read this manual thoroughly before using the product to ensure proper and safe operation. Keep this manual for future reference.

2. Safety Information

To reduce the risk of electric shock, fire, or damage to the device, please observe the following safety precautions:

• Do not expose this device to rain or moisture.
• Do not place objects filled with liquids, such as vases, on the device.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the device.
• Only use attachments/accessories specified by the manufacturer.
• Unplug this device during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the device, the device has been exposed to rain or moisture, does not operate normally, or has been dropped.

3. Package Contents

Please check the package contents to ensure all items are present and undamaged:

• ALPOWL 4-Channel Professional Audio Mixer
• USB Power Supply
• USB Mini Cable (3ft)
• User Manual (this document)

Image: The ALPOWL 4-Channel Live Mixer box, showing the mixer unit, USB power supply, and USB cable.

4. Product Overview

The ALPOWL 4-Channel Professional Audio Mixer is a compact and versatile sound board console system designed for various audio applications, including DJ, studio, and streaming. It features a 4-channel digital USB interface, Bluetooth connectivity, MP3 input, and 48V phantom power.

Front Panel Controls and Connections

Image: Front view of the ALPOWL 4-Channel Audio Mixer, displaying all knobs, buttons, and input/output ports.

• MIC1/LINE & MIC2/LINE Inputs: Combo XLR/TRS jacks for connecting microphones or line-level instruments.
• +48V PAD Button: Activates 48V phantom power for condenser microphones.
• REC Output: RCA outputs for recording.
• CD Input: RCA inputs for connecting external audio sources like CD players.
• MAIN OUT: L/R RCA outputs for main audio output.
• GAIN Knobs: Adjust input sensitivity for each channel.
• HIGH & LOW Knobs: Equalization controls for high and low frequencies on each channel.
• EFF Knobs: Adjust the effect level for each channel.
• PEAK Indicators: Light up when the input signal is too high, indicating potential clipping.
• LEVEL Knobs: Adjust the output level for each channel.
• ST/USB Button: Switches between stereo input and USB/Bluetooth input for Channel 3/4.
• USB Socket: For connecting USB drives for MP3 playback or connecting to a computer.
• MP3 IN + USB Display/Controls: Digital display and buttons for MP3 playback, Bluetooth pairing, and navigation.
• DELAY & REPEAT Knobs: Adjust parameters for the built-in effects processor.
• PHONES Jack: 3.5mm headphone output.
• PHONE Knob: Adjusts headphone volume.
• MAIN Knob: Adjusts the overall main output volume.

Image: A diagram illustrating various connections to the ALPOWL mixer, including microphones, record output, power amplifier, sound card, U disk, mobile phone, and headset.

Rear Panel Connections

Image: Rear view of the ALPOWL 4-Channel Audio Mixer, highlighting the DC 5V/PC power input and the USB/PC switch.

• DC 5V/PC: USB power input. Connect the provided USB cable and power supply here.
• USB/PC Switch: Press this button to switch the mixer to act as a sound card for your computer.

5. Setup

Follow these steps for initial setup of your ALPOWL Audio Mixer:

1. Power Connection: Connect the provided USB cable to the DC 5V/PC port on the rear of the mixer. Connect the other end to the USB power supply and plug it into a wall outlet. Alternatively, you can power the mixer via a computer's USB port or a mobile power bank.


Image: Illustration showing various power supply options for the ALPOWL mixer, including a computer, a wall power supply, and a mobile power bank.

2. Connecting Microphones/Instruments: Connect your microphones (XLR) or line-level instruments (TRS) to the MIC1/LINE and MIC2/LINE combo jacks. If using condenser microphones, ensure the +48V PAD button is pressed to supply phantom power.
3. Connecting Output Devices: Connect the MAIN OUT (L/R RCA) to your amplifier, powered speakers, or recording device.
4. Headphone Connection: Plug your headphones into the PHONES jack for monitoring.
5. Computer Connection (Optional): To use the mixer as a computer sound card, connect a USB cable from the mixer's USB port to your computer. Ensure the USB/PC switch on the rear is pressed in.
6. Bluetooth Pairing (Optional): For wireless audio streaming, activate Bluetooth on your mobile device and search for the mixer. Pair with the device named 'JieLi-BR21'.

6. Operating Instructions

This section details the operation of the ALPOWL 4-Channel Professional Audio Mixer's various features.

6.1. Basic Audio Mixing

1. Power On: Once connected, the mixer will power on automatically.
2. Adjusting Input Gain: Use the GAIN knobs for each channel to set the initial input level. Adjust until the PEAK indicator lights up only occasionally during the loudest parts of the signal.
3. Equalization: Use the HIGH and LOW knobs to adjust the tone of each channel. Turn clockwise to boost frequencies, counter-clockwise to cut.
4. Channel Volume: Use the LEVEL knobs to control the individual volume of each channel in the main mix.
5. Main Output Volume: Adjust the overall output volume using the MAIN knob.
6. Headphone Monitoring: Use the PHONE knob to adjust the volume of your headphones.

6.2. Using Effects (FX)

The mixer includes a built-in 16-bit DSP processor for effects.

1. Activate Effects: Press the EFF button on the desired channel to send its signal to the effects processor.
2. Adjust Effect Parameters: Use the DELAY knob to control the delay time and the REPEAT knob to control the number of repetitions for the echo/delay effect.
3. Effect Level: The EFF knob on each channel controls how much of that channel's signal is sent to the effects processor.

6.3. USB/Bluetooth/MP3 Playback

The mixer supports audio playback from USB drives, Bluetooth devices, and can function as a computer sound card.

1. USB Drive Playback: Insert a USB drive containing MP3 or WAV files into the USB socket. The mixer will automatically begin playback. Use the MP3 IN + USB controls (play/pause, skip) to navigate tracks.
2. Bluetooth Playback: After pairing your device (as described in Setup), select Bluetooth mode on the mixer (via the MP3 IN + USB controls). Audio from your paired device will now play through the mixer.
3. Computer Sound Card Mode: Ensure the USB cable is connected and the USB/PC switch on the rear is pressed. The mixer should be recognized by your computer as an audio device. You can then route computer audio through the mixer and record audio from the mixer to your computer.

Image: The ALPOWL mixer highlighting its intelligent matching and strong compatibility, including built-in upgraded Bluetooth template for digital products like mobile phones and computers.

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your audio mixer.

• Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Do not use abrasive cleaners, waxes, or solvents.
• Ventilation: Ensure the ventilation openings are clear of dust and debris to prevent overheating.
• Storage: When not in use for extended periods, store the mixer in a cool, dry place, away from direct sunlight and extreme temperatures.
• Cable Care: Avoid bending or pinching cables excessively. Always grasp the plug, not the cable, when disconnecting.

8. Troubleshooting

If you encounter issues with your ALPOWL Audio Mixer, refer to the following common problems and solutions:

9. Specifications

Key technical specifications for the ALPOWL 4-Channel Professional Audio Mixer:

• Brand: ALPOWL
• Model Number: 4-Channel
• Number of Channels: 4
• Connectivity Technology: USB, Bluetooth, XLR
• Output Connector Type: USB, XLR (via combo jack)
• Power Source: Corded Electric (DC 5V via USB)
• Item Weight: 1.39 pounds
• Product Dimensions: 2.36 x 7 x 8 inches
• Special Features: 48V Phantom Power, 16-Bit DSP Processor, MP3 Playback, Computer Sound Card Functionality

10. Warranty and Support

For warranty information and customer support, please refer to the documentation included with your purchase or visit the official ALPOWL website. You may also find additional resources and a downloadable PDF user manual at the following Amazon link: ALPOWL User Manual (PDF).

For further assistance, please contact ALPOWL customer service through the retailer where you purchased the product.