BOMGE BGM22 USB Audio Interface User Manual

1. Product Overview

The BOMGE BGM22 USB Audio Interface is a versatile device designed for high-fidelity audio recording and streaming. It offers 32-bit/192 kHz audio resolution, ensuring pristine sound quality for various applications including vocal recording, instrument recording, and podcasting. Its compact and durable metal body makes it suitable for both studio and portable use.

Figure 1.1: Front view of the BOMGE BGM22 USB Audio Interface.

Figure 1.2: The BOMGE BGM22 is suitable for vocal recording, guitar recording, and music recording.

2. Setup Guide

2.1 Package Contents

• BOMGE BGM22 USB Audio Interface x1
• USB Cable x1
• User Manual x1

2.2 Panel Details

Familiarize yourself with the various inputs, outputs, and controls on the BOMGE BGM22 interface.

Figure 2.1: Detailed diagram of the front and rear panels of the BOMGE BGM22, showing all controls and ports.

• Input 1/2 (Mic/Line/XLR Input Interface): Combo inputs for microphones (XLR) or line/instrument level signals (1/4-inch).
• HI-Z Input 2 Switch: Engages high impedance for direct guitar/bass connection on Input 2.
• Gain 1/2 Knobs: Adjust input gain for respective channels.
• Direct Monitor Switch: Enables zero-latency monitoring of input signals.
• Output Knob: Controls the main output volume.
• +48V Phantom Power Switch: Activates +48V phantom power for condenser microphones on Input 1 (requires XLR connection).
• Headphone Jack: 1/4-inch stereo output for headphones.
• Headphone Volume Adjustment: Controls headphone output volume.
• USB Port: Connects the interface to your computer.
• Power Source Switch: Selects power source (USB or DC 5V).
• DC 5V Port: Optional external 5V power input for stable power, especially when connected to iPad or for standalone use.
• Loopback Switch: Enables the loopback function.
• Outputs 1(L) / 2(R): 1/4-inch outputs for connecting to studio monitors or other audio equipment.

2.3 Connecting to Your Computer

The BGM22 is a plug-and-play device for Windows and Mac operating systems, requiring no proprietary drivers. Simply connect it via USB.

1. Ensure the Power Source switch on the rear panel is set to the desired position (USB for computer power, DC 5V for external adapter).
2. Connect the USB cable from the BGM22's USB port to an available USB port on your computer.
3. Your computer should automatically recognize the device.
4. For stable power, especially with iPads or if experiencing power issues, connect a standard USB power adapter or external USB battery to the DC 5V port.

Figure 2.2: Diagram illustrating how to connect the BOMGE BGM22 to a computer and speakers.

2.4 Connecting Microphones and Instruments

The BGM22 features two combo inputs that accept both XLR and 1/4-inch connections.

1. Microphones: Connect dynamic microphones via XLR to Input 1 or Input 2. For condenser microphones, connect via XLR to Input 1 and activate the +48V phantom power switch on the rear panel.
2. Instruments: Connect guitars, basses, or other instruments via 1/4-inch cables to Input 1 or Input 2. For high-impedance instruments like electric guitars, ensure the HI-Z Input 2 switch is engaged if using Input 2.
3. Line-Level Devices: Connect keyboards, drum machines, or other line-level devices via 1/4-inch cables.

Figure 2.3: Diagram showing various connections to the BOMGE BGM22, including microphone, keyboard, guitar, and headphones.

Figure 2.4: Demonstrating the use of 48V phantom power for condenser microphones with the BOMGE BGM22.

3. Operation

3.1 Basic Recording and Monitoring

1. Connect your microphone or instrument to the appropriate input.
2. Adjust the corresponding Gain knob (Gain 1 or Gain 2) until the "OL" (Overload) indicator light flashes only occasionally during the loudest parts of your performance.
3. Connect headphones to the Headphone Jack and adjust the Headphone Volume Adjustment knob for comfortable listening.
4. To monitor your input signal directly without latency, ensure the Direct Monitor switch is engaged. This allows you to hear your performance in real-time.
5. Adjust the main Output knob to control the volume sent to your studio monitors or other output devices.

Figure 3.1: A user operating the BOMGE BGM22 with a laptop and headphones, demonstrating its use in a recording setup.

3.2 Loopback Function

The Loopback function allows you to mix all audio input from the BGM22's channels (Input 1 and 2) with audio playback from your computer. This combined signal is then sent back to your computer as a 2-channel stereo signal. This is particularly useful for live streaming, podcasting, or recording online meetings where you need to capture both your microphone and computer audio simultaneously.

• To activate, simply engage the Loopback switch on the rear panel.
• Configure your recording software (DAW) to record the stereo input from the BGM22.

3.3 Stereo/Mono Output

The BGM22 provides both left and right channel outputs, allowing for stereo recording and playback. This helps in accurately reflecting the spatial position of different sound sources.

Figure 3.2: Diagram explaining stereo output functionality, showing how MIC1 and MIC2 can be routed to left and right channels for separate track recording.

You can switch between stereo and mono output modes depending on your recording or playback needs. This flexibility allows for various recording scenarios, such as recording two separate mono tracks (e.g., vocal and guitar) or a single stereo track.

3.4 Product Demonstration Video

4. Maintenance

Proper maintenance ensures the longevity and optimal performance of your BOMGE BGM22 audio interface.

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Avoid using abrasive cleaners, solvents, or waxes.
• Storage: When not in use, store the interface in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Handle the device with care. Avoid dropping it or subjecting it to strong impacts.
• Connections: Always ensure cables are properly connected and disconnected to prevent damage to the ports.

5. Troubleshooting

• No Sound Output:
  • Check all cable connections (USB, outputs to speakers/headphones).
  • Ensure the main Output and Headphone Volume knobs are turned up.
  • Verify the BGM22 is selected as the audio input/output device in your computer's sound settings and DAW.
  • Check if the Power Source switch is correctly set and the device is receiving power.
• Input Signal Too Low/High:
  • Adjust the Gain 1 or Gain 2 knobs for the respective input.
  • Ensure +48V phantom power is enabled for condenser microphones (Input 1 only, via XLR).
  • If using a guitar or bass, ensure the HI-Z Input 2 switch is engaged for Input 2.
• Latency During Monitoring:
  • Ensure the Direct Monitor switch is engaged for zero-latency monitoring.
  • If monitoring through software (DAW), reduce the buffer size in your DAW's audio settings.
• Intermittent Connection/Noise:
  • Try a different USB port on your computer.
  • Use a high-quality USB cable.
  • Ensure stable power supply, especially if using the DC 5V input.
  • Avoid placing the interface near sources of electromagnetic interference.
• Loopback Function Not Working:
  • Ensure the Loopback switch on the rear panel is engaged.
  • Verify your recording software is configured to receive the mixed stereo input from the BGM22.

6. Specifications

Figure 6.1: Dimensions of the BOMGE BGM22 USB Audio Interface.

7. Warranty and Support

For warranty information, please refer to the documentation included with your product packaging or visit the official BOMGE brand store.

• Official User Manual (PDF): Download PDF Manual
• BOMGE Brand Store: Visit BOMGE Store on Amazon

For further assistance or technical support, please contact BOMGE customer service through the official channels provided on their website or product packaging.