jindaaudio 4-Channel MG04 Audio Mixer User Manual

Introduction

The jindaaudio 4-Channel MG04 Audio Mixer is a versatile and portable sound board designed for various audio applications, including streaming, live mixing, DJ events, and karaoke. It features Bluetooth connectivity, a USB audio interface, 48V phantom power, and built-in FX delay effects, providing clean and clear sound with a super low noise floor.

Product Overview

Figure 1: Front view of the jindaaudio 4-Channel MG04 Audio Mixer, showcasing its compact design and control layout.

Figure 2: Detailed labeled diagram of the mixer's controls and input/output ports, including gain controls, EQ, effects, and USB/Bluetooth sections.

Key Features:

• 4-Channel Design: Provides multiple input options for various instruments and microphones.
• Bluetooth Connectivity: Seamless wireless audio streaming from compatible devices.
• USB Audio Interface: Connects to U disk, MP3 players, and computers for versatile playback and recording.
• 48V Phantom Power: Supports condenser microphones for professional audio capture.
• FX Delay Effect: Built-in reverb and delay effects for enhanced vocal and instrumental sound.
• High and Low Bass Adjustment: Per-channel equalization for precise sound shaping.
• Multi-interface Mode: Supports headphone, musical instrument, MIC, line, XLR, 1/4" integrated plug, and RCA (lotus) interface inputs.
• Portable Design: Compact and lightweight, suitable for on-the-go use, powered by DC5V, including power banks.
• Clean, Clear Sound: Engineered for low noise and high headroom, ensuring optimal audio quality.

Setup Guide

1. Powering the Mixer

The MG04 mixer can be powered via its DC5V power supply interface. This allows for flexible power options, including a standard wall adapter or a portable power bank, making it ideal for mobile setups.

Figure 3: Powering the mixer using various USB power sources, such as a laptop, power bank, or wall adapter.

2. Connecting Audio Devices

The mixer offers a variety of input options to accommodate different audio sources:

• MIC/LINE Inputs (Channels 1 & 2): Use XLR or 1/4" (6.35mm) TRS/TS cables for microphones (dynamic or condenser with 48V phantom power enabled) or line-level instruments.
• Stereo Input (Channels 3/4): Use 1/4" (6.35mm) TS cables for stereo line-level devices or RCA (lotus) inputs for consumer audio equipment.
• USB Input: Connect a USB flash drive for MP3 playback or connect the mixer to a computer for use as an audio interface.

Figure 4: The mixer's wide compatibility with various audio devices, including instruments, microphones, and amplifiers.

Figure 5: Overview of common connection points for microphones, instruments, headphones, and USB devices on the mixer.

3. Output Connections

• MAIN OUT (Left/Right): Connect these 1/4" (6.35mm) outputs to your powered speakers, amplifier, or recording device.
• REC Output (RCA): For connecting to a recording device.
• PHONE Output: Connect your headphones for monitoring the mix.

Operating Instructions

1. Basic Operation

1. Power On: Connect the power supply and press the POWER button. The power indicator will light up.
2. Gain Adjustment: For each channel, adjust the GAIN knob to set the input level. Aim for the PEAK indicator to flash only occasionally, avoiding constant illumination which indicates clipping.
3. Equalization (EQ): Use the HIGH and LOW knobs to adjust the treble and bass frequencies for each channel.
4. Volume Control: Use the channel VOL slider to control the individual channel volume.
5. Main Output Volume: Adjust the MAIN volume knob to control the overall output level.
6. Headphone Monitoring: Connect headphones to the PHONE jack and adjust the PHONE volume knob for monitoring.

2. Using 48V Phantom Power

The mixer provides +48V phantom power for condenser microphones on channels 1 and 2. To activate, ensure your condenser microphone is connected, then press the +48V PHANTOM(1-2) button. The indicator light next to the button will illuminate. Caution: Do not activate phantom power when dynamic microphones or other non-phantom powered devices are connected, as this may cause damage.

3. Bluetooth Playback

To stream audio wirelessly via Bluetooth:

1. Ensure the mixer is powered on.
2. Press the MODE/BT button until "Bluetooth" is displayed on the screen. The Bluetooth indicator will flash, indicating pairing mode.
3. On your smartphone or Bluetooth-enabled device, search for "MG04" (or similar name) in the Bluetooth settings and pair with it.
4. Once paired, the Bluetooth indicator will stop flashing. You can now play audio from your device through the mixer.
5. Use the playback control buttons (Play/Pause, Previous, Next) on the mixer to control your audio.

Figure 6: Bluetooth wireless streaming from a smartphone to the mixer.

4. USB Playback and Recording

The USB interface supports both playback from a USB flash drive and connection to a computer for audio interface functionality.

• USB Flash Drive Playback: Insert a USB flash drive containing MP3 files into the USB socket. The mixer will automatically detect and begin playing the audio. Use the playback control buttons to navigate tracks.
• Computer Connection (USB Audio Interface): Connect the mixer to your computer via a USB cable. The mixer will be recognized as an audio input/output device. You can then use it for recording audio from the mixer's inputs or playing back audio from your computer through the mixer.

Figure 7: USB compatibility for connecting a flash disk or computer PC.

5. Applying Effects (FX)

The MG04 features a built-in reverb/delay effect. Use the DELAY and REPEAT knobs to adjust the characteristics of the effect. The EFX knob on each channel controls the amount of effect sent from that channel to the master effect processor.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid using liquid cleaners or solvents, as they may damage the finish or internal components.
• Storage: When not in use, store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Protection: Protect the mixer from dust and moisture. Consider using a dust cover or storing it in a protective bag, especially during transport.

Figure 8: The compact size of the mixer allows for easy portability and storage.

Troubleshooting

Specifications

Warranty and Support

For warranty information and technical support, please refer to the official jindaaudio website or contact their customer service directly. Specific warranty terms may vary by region and retailer.

Visit the official jindaaudio store: jindaaudio Amazon Store