1. Introduction
This manual provides detailed instructions for the operation and maintenance of your BOMGE BMG-04F Audio Mixer. This professional 4-channel mixer features 24 DSP effects, a built-in USB sound card interface, Bluetooth connectivity, and 48V phantom power, making it suitable for studio recording, live performances, and PC integration.
Image: The BOMGE BMG-04F Audio Mixer, showcasing both black and white models with their control layouts.
2. Safety Information
- Do not expose the unit to rain or moisture to avoid fire or electric shock.
- Do not open the casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Ensure proper ventilation. Do not block ventilation openings.
- Use only the power adapter supplied with the unit.
- Avoid placing the unit near heat sources or in direct sunlight.
- Disconnect the power supply during lightning storms or when unused for long periods.
3. Package Contents
Please check that all items are present in your package:
- BOMGE BMG-04F Audio Mixer
- Power Adapter (EU plug shown in image, specific plug type may vary by region)
- USB Cable
- User Manual (this document)
Image: The BOMGE BMG-04F Audio Mixer, power adapter, and USB cable included in the package.
4. Product Overview
The BMG-04F is a compact yet powerful 4-channel mixer designed for versatility. It features a range of inputs and outputs, comprehensive control over audio signals, and integrated digital effects.
4.1. Control Panel Layout
The mixer's front panel includes controls for each channel, master output, and DSP effects. Key controls include:
- GAIN: Adjusts input sensitivity for each channel.
- HIGH/MID/LOW: 3-band equalizer for tone shaping.
- EFF: Controls the amount of effect applied to the channel.
- PEAK: Indicator for signal clipping.
- LEVEL: Adjusts the output level of each channel.
- MAIN OUT: Master output level control.
- PHONES: Headphone output level control.
- PROGRAM: Selects DSP effects.
- DSP+/-: Adjusts DSP effect parameters.
- REC: Recording function controls.
- BT: Bluetooth activation button.
- +48V: Phantom power switch for condenser microphones.
4.2. Input/Output Ports
The rear and top panels feature various connection points:
- MIC/LINE Inputs (XLR/6.5mm Combo Jacks): For microphones and line-level instruments.
- IN L/R 3/4 (RCA/6.5mm Jacks): Stereo line inputs.
- OUT L/R (XLR/6.5mm Jacks): Main stereo outputs.
- REC (RCA): Stereo recording output.
- PHONES (6.5mm Jack): Stereo headphone output.
- USB Port: For PC connection (sound card) and U disk recording.
Image: Close-up of the mixer's input/output section, highlighting XLR and 6.5mm universal interfaces. Note that +48V phantom power only works when the input is XLR.
5. Setup Guide
5.1. Power Connection
- Connect the provided power adapter to the mixer's power input.
- Plug the power adapter into a suitable electrical outlet.
5.2. Connecting Audio Devices
The BMG-04F is compatible with a wide range of audio equipment:
Image: The mixer connected to various devices including guitar, microphone, speaker, energy amplifier, car sound system, electronic organ, CD player, computer, headphones, and computer speakers.
- Microphones: Connect dynamic or condenser microphones to the MIC/LINE inputs using XLR cables. Activate +48V phantom power for condenser microphones.
- Instruments: Connect guitars, electronic organs, or other instruments to the MIC/LINE or IN L/R 3/4 inputs using 6.5mm TS/TRS cables.
- Playback Devices: Connect CD players, computers, or other audio sources to the IN L/R 3/4 inputs using RCA or 6.5mm cables.
- Output Devices: Connect speakers, energy amplifiers, or car sound systems to the OUT L/R ports using XLR or 6.5mm cables. Connect headphones to the PHONES output.
5.3. Bluetooth Connection
To connect a mobile device via Bluetooth:
- Press the "BT" button on the mixer. The display will show "BT" and start flashing, indicating pairing mode.
- On your mobile device, go to Bluetooth settings and search for available devices.
- Select "BMG-24DSP" from the list. Once connected, the "BT" indicator on the mixer will stop flashing.
Image: Diagram illustrating how to connect a mobile phone to the mixer via Bluetooth, showing the device name "BMG-24DSP" in the phone's Bluetooth settings.
5.4. PC Connection (USB Sound Card)
To use the mixer as a USB sound card for your computer:
- Connect the mixer to your PC using the provided USB cable.
- Your computer should automatically detect and install the necessary drivers.
- Select the mixer as your audio input/output device in your computer's sound settings or DAW software.
6. Operating Instructions
6.1. Basic Mixing
- Ensure all GAIN and LEVEL controls are set to minimum before powering on.
- Power on the mixer and connected audio devices.
- Gradually increase the GAIN for each input channel until the PEAK indicator flashes only occasionally during the loudest parts of the signal.
- Adjust the HIGH, MID, and LOW EQ controls to shape the tone of each channel.
- Use the LEVEL faders to balance the volume of each channel in the mix.
- Adjust the MAIN OUT control for the overall output volume.
- Monitor your mix using headphones connected to the PHONES output, adjusting its level as needed.
6.2. DSP Effects
The BMG-04F features 24 built-in DSP effects, including 16 DSP chips for various sound effects.
Image: Comparison showing the new design with 16 DSP chips for different sound effects and XLR output, contrasting with an older model lacking DSP and XLR output.
- Press the "PROGRAM" knob to cycle through the available DSP effects.
- Use the "DSP+/-" buttons to adjust parameters of the selected effect.
- Turn the "EFF" knob on each channel to send that channel's signal to the effects processor.
6.3. Recording
The mixer supports recording to a USB flash drive (U disk) or directly to a PC.
Image: Diagram illustrating how to record audio from the mixer to a U disk or directly to a laptop/PC via USB. Note: The USB data cable is not included in the box for U disk recording, but a standard USB cable is provided for PC connection.
6.3.1. Recording to U Disk
- Insert a formatted USB flash drive into the USB port.
- Press the "REC" button to start recording. Press again to stop.
- The recorded audio will be saved to the U disk.
6.3.2. Recording to PC
When connected to a PC via USB, the mixer acts as an audio interface. Use your preferred Digital Audio Workstation (DAW) software to record the mixer's output.
6.4. Live Streaming
The mixer can be used to stream audio from various sources to your live streaming platform.
Image: Diagram showing how to live stream from audio sources (PC, USB, Bluetooth) to the mixer, and then output to devices like TV, mobile phone, or VOD. An OTG cable is required for mobile phone connection and must be purchased separately.
Connect your audio sources (PC, USB, Bluetooth) to the mixer. Then, connect the mixer's output to your streaming device (e.g., mobile phone via an OTG cable, or directly to a PC for streaming software).
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the mixer's surface. Do not use liquid cleaners or solvents.
- Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending cables sharply or placing heavy objects on them. Disconnect cables by pulling the plug, not the cable itself.
8. Troubleshooting
- No Sound Output:
- Check all cable connections.
- Ensure the mixer is powered on.
- Verify GAIN and LEVEL controls are not at minimum.
- Check the MAIN OUT and PHONES level controls.
- Ensure output devices (speakers, headphones) are properly connected and powered.
- No Phantom Power (+48V) for Microphone:
- Ensure the microphone is connected via an XLR cable. Phantom power is not supplied via 6.5mm inputs.
- Verify the +48V switch is engaged.
- Bluetooth Connection Issues:
- Ensure the mixer's "BT" button is pressed and flashing.
- Check that your mobile device's Bluetooth is enabled and searching.
- Try unpairing and re-pairing the device.
- Recording to U Disk Not Working:
- Ensure the U disk is properly inserted and formatted.
- Check if the U disk has sufficient free space.
- Power Cable Type: The mixer uses a standard power adapter. The specific connector type for the power adapter is not USB-C.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | BMG-04F |
| Type | Mixers |
| Brand Name | BOMGE |
| Channels | 4 |
| DSP Effects | 24 (Built-in 16 DSP chips) |
| Phantom Power | +48V (for XLR inputs) |
| Connectivity | USB Sound Card, Bluetooth |
| Recording | To U Disk, To PC |
| Dimensions (approx.) | 15.5cm (W) x 19cm (L) x 2-3.5cm (H) |
| Origin | Mainland China |
| Certification | None |
Image: Diagram showing the approximate dimensions of the BOMGE BMG-04F mixer: 15.5cm width, 19cm length, and height varying from 2cm to 3.5cm.
10. User Tips
- For connecting to mobile phones for live streaming or other audio input/output, an OTG (On-The-Go) cable is often required and must be purchased separately.
- When connecting to a car sound system, ensure proper impedance matching and use appropriate cables to avoid damage to either the mixer or the car audio system.
- The mixer's Bluetooth version is not explicitly stated, but it supports standard Bluetooth audio streaming. If experiencing issues, ensure your device is within range and try re-pairing.
11. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the BOMGE customer service directly. Keep your purchase receipt as proof of purchase.
