MOREFAND MG04BT 4-Channel Audio Mixer User Manual

Introduction

Thank you for choosing the MOREFAND MG04BT 4-Channel Audio Mixer. This manual provides detailed instructions for the proper setup, operation, and maintenance of your audio mixer. Please read this manual thoroughly before use to ensure optimal performance and to prevent damage to the unit.

Safety Instructions

Observe the following safety precautions to prevent electric shock, fire, or damage to the unit:

• Power Supply: Use only the specified power adapter. Ensure the voltage matches the requirements of the mixer.
• Water and Moisture: Do not expose the unit to rain or moisture. Do not place objects filled with liquids on the unit.
• Ventilation: Ensure adequate ventilation. Do not block ventilation openings.
• Heat Sources: Keep the unit away from heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
• Cleaning: Clean only with a dry cloth. Do not use liquid cleaners or aerosol cleaners.
• Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
• Cables: Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

Product Overview

The MOREFAND MG04BT is a compact 4-channel audio mixer designed for studio recording, live sound, and various audio applications. It features dual XLR microphone inputs with phantom power, USB and MP3 playback capabilities, Bluetooth 5.0 connectivity, and comprehensive audio controls.

Image: Front view of the MOREFAND MG04BT 4-Channel Audio Mixer, showcasing its compact design and control layout.

Key Features:

• 4-Channel Input: Two mono XLR/TRS inputs and one stereo TRS/USB input.
• Dual XLR Inputs with Phantom Power: Connect professional microphones with 48V phantom power support for condenser microphones.
• USB/MP3 Direct Playback: Play audio files directly from a USB drive or use the built-in MP3 player.
• Bluetooth 5.0 Connectivity: Wirelessly stream audio from compatible devices such as smartphones, tablets, and computers.
• Studio-Grade Controls: Each channel includes GAIN knobs, 3-band EQ (HIGH, MID, LOW), PAN positioning, and AUX sends for precise audio shaping.
• Digital Effect Processor: Built-in DSP for reverb effects with adjustable DELAY and REPEAT parameters.
• Real-Time Level Display: LED screen visualizes output levels to prevent clipping and ensure optimal volume balance.
• Pro I/O Flexibility: MAIN OUTPUT (L/R), PHONE monitoring, EFFECT sends, and INSERT jacks for expandable signal routing.
• USB OTG Support: Functions as a 24-bit/192 kHz sound card for computer recording and playback.

Controls and Connections

This section details the various controls and connection points on your MG04BT mixer.

Image: Detailed annotated diagram of the MG04BT mixer's front panel, highlighting all inputs, outputs, and control knobs.

Input Section:

• XLR / MIC Input Jacks (1, 2): Balanced inputs for microphones.
• TRS / 6.35mm Input Jacks (1, 2): Unbalanced inputs for line-level instruments or devices.
• INSERT Input Jacks (1, 2): For connecting external signal processors to individual channels.
• LINE Input (3/4 L/MONO, R): Stereo 6.35mm inputs for stereo line-level sources.
• USB Expansion: USB port for connecting a USB disk for MP3 playback or connecting to a computer for sound card functionality.

Channel Controls (Channels 1-4):

• GAIN Control: Adjusts the input sensitivity for each channel.
• 3-Band Equalizer (HIGH/MID/LOW): Adjusts the treble, midrange, and bass frequencies for each channel.
• PAN Control: Adjusts the stereo positioning of the channel signal (left to right).
• AUX Send: Controls the amount of signal sent to the auxiliary output for external effects or monitoring.
• EFF (Effect) Send: Controls the amount of signal sent to the internal digital effect processor.
• Channel Fader: Adjusts the output level of each individual channel.
• PEAK Indicator: Lights up when the input signal is too high, indicating potential clipping.

Master Section:

• +48V Phantom Power Switch: Activates 48V phantom power for condenser microphones on XLR inputs.
• Digital MP3 Player/Bluetooth Module: Includes an LED display, function control keys (Play/Pause, Skip, Menu), and USB port.
• DELAY/REPEAT Controls: Adjusts the parameters of the built-in digital effects.
• PHONE Monitoring Output: 6.35mm stereo jack for connecting headphones.
• MAIN Output (L/R): RCA and 6.35mm TRS outputs for connecting to main speakers or recording devices.
• MAIN Fader: Master volume control for the overall output.
• Signal Level Indicator: LED meters display the main output level.

Setup

1. Power Connection:

1. Ensure the mixer's power switch is in the OFF position.
2. Connect the provided power adapter to the DC 12V input on the rear of the mixer.
3. Plug the power adapter into a suitable AC power outlet.

2. Input Connections:

• Microphones: Connect XLR microphones to the MIC 1 or MIC 2 XLR inputs. If using condenser microphones, activate the +48V Phantom Power switch.
• Instruments/Line Devices: Connect instruments (e.g., keyboards, guitars with preamps) or line-level devices to the 6.35mm TRS inputs (Channels 1-4).
• USB Drive: Insert a USB flash drive with MP3 files into the USB port for direct playback.
• Bluetooth Device: Power on the mixer, press the MENU button on the digital player to switch to Bluetooth mode. Search for "BT 5.0" on your device and pair.
• Computer Connection: Connect the mixer to your computer via a USB cable. The mixer will function as an external sound card. Select "JieLi BR21" as the input/output device in your computer's sound settings.

Image: Illustration of connecting a condenser microphone and activating 48V phantom power.

Image: Diagram showing a smartphone connected to the mixer via Bluetooth 5.0 for backing tracks.

Image: Demonstrates USB connectivity for MP3 playback from a USB drive and functioning as a computer sound card.

Image: A user connecting the mixer to a laptop for recording and editing audio, highlighting its sound card capabilities.

3. Output Connections:

• Main Output: Connect the MAIN L/R outputs (RCA or 6.35mm TRS) to your powered speakers, amplifier, or recording interface.
• Headphones: Connect headphones to the PHONE 6.35mm jack for monitoring.

Image: A user monitoring audio through headphones connected to the mixer, demonstrating real-time audio adjustment.

Operation

1. Basic Mixing:

1. Turn on the mixer and any connected audio devices.
2. Set all channel GAIN knobs to their minimum position and all channel faders to their lowest position. Set the MAIN fader to approximately 0dB.
3. For each active channel, gradually increase the GAIN knob until the PEAK indicator flashes only occasionally during the loudest parts of the signal.
4. Adjust the 3-band EQ (HIGH, MID, LOW) to shape the tone of each input.
5. Use the PAN control to position the sound source in the stereo field.
6. Slowly raise the channel fader to bring the signal into the mix.
7. Adjust the MAIN fader for the overall output volume. Monitor the signal level indicators to avoid clipping.

Image: Illustrates the function of the 3-band equalizer (HIGH, MID, LOW) for boosting or cutting specific frequency bands.

2. Using Digital Effects:

1. Increase the EFF (Effect) send knob on the desired channel to send signal to the internal effect processor.
2. Adjust the DELAY and REPEAT knobs in the master section to control the characteristics of the reverb effect.

Image: Highlights the built-in digital signal processor (DSP) for reverb effects, indicating its fast response and professional output.

3. USB/MP3 Playback:

1. Insert a USB drive containing MP3 audio files into the USB port.
2. Use the control keys (Play/Pause, Skip, Menu) on the digital player module to navigate and play tracks.
3. Adjust the channel fader for the USB/MP3 input (Channel 3/4) to control its volume in the mix.

4. Bluetooth Operation:

1. Press the MENU button on the digital player module until "BLUE" appears on the LED display.
2. On your smartphone, tablet, or computer, search for Bluetooth devices and select "BT 5.0" to pair.
3. Once paired, audio played on your device will stream through the mixer. Adjust the channel fader for the Bluetooth input (Channel 3/4) to control its volume.

Specifications

The following are the technical specifications for the MOREFAND MG04BT Audio Mixer:

Image: Diagram showing the physical dimensions of the MG04BT mixer: 240mm (width), 220mm (depth), 40mm (height).

Image: Lists the various input and output types available on the mixer, including Mic, Line, Insert, USB/Bluetooth inputs, and AUX, Effect, Main, Headphone outputs.

Troubleshooting

If you encounter issues with your mixer, refer to the following table for common problems and solutions:

Maintenance

To ensure the longevity and optimal performance of your MOREFAND MG04BT mixer, follow these maintenance guidelines:

• Cleaning: Regularly wipe the mixer's surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or waxes, as they can damage the finish and controls.
• Dust Protection: When not in use, cover the mixer with a dust cover to prevent dust and debris from accumulating on the controls and inside the unit.
• Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Cable Care: Always handle cables by the connector, not the cable itself, to prevent damage to the wiring. Avoid sharp bends or kinks in cables.

Warranty and Support

For warranty information or technical support, please refer to the documentation included with your purchase or contact MOREFAND customer service through their official channels. Keep your proof of purchase for warranty claims.