1. Introduction
The LMBGM-R2 Wireless Microphone System is a professional-grade, dual-channel UHF fixed-frequency dynamic microphone set designed for a wide range of audio applications. Its robust construction, stable transmission, and clear sound quality make it ideal for various events and settings.
Key Features:
- Material: Constructed with durable ABS anti-fall design material for longevity.
- Transmission: Utilizes a UHF 500MHz high-frequency band stable transmission chip for reliable wireless performance.
- Sound Quality: Features a self-developed circuit board ensuring stable transmission, undistorted sound quality, and a microphone core that accurately reproduces human voice.
- Cost-Effective: A versatile and affordable solution suitable for both outdoor and home KTV environments.
- Wide Application: Perfect for stage performances, outdoor events, churches, auditoriums, classrooms, home use, and conference rooms.
- Compatibility: Easily pairs with mixers, amplifiers, audio interfaces, and powered speakers.
2. Package Contents
Please check the package carefully to ensure all items are present and in good condition:
- Receiver x 1
- Handheld Microphone x 2
- Charger x 1
- 6.35mm Audio Cable x 1
- Instruction Manual x 1
3. Product Features Overview
The LMBGM-R2 system is engineered for professional performance and ease of use.
- Good Sound Quality: Delivers clear and crisp audio reproduction.
- Hard Metal Mesh Shell: Provides durability and protection for the microphone capsule.
- Long Transmission Distance: Offers a reliable operating range of 30 to 50 meters under standard conditions.
- Dynamic Core: Ensures high-fidelity sound capture.
- Heart-Shaped Radio (Cardioid Pickup Pattern): Focuses on sound directly in front of the microphone, reducing background noise.
- LED Display: Provides clear visual feedback on frequency and status.
The dynamic microphone design ensures that treble frequencies are not harsh, and the thick vibration membrane contributes to a spacious and flat frequency response with high sensitivity, resulting in clear vocals.
The system is compatible with a broad range of audio equipment, including mixers, karaoke machines, audio interfaces, PA systems, and powered speakers, making it highly versatile for different setups.
4. Specifications
Detailed technical specifications for the LMBGM-R2 Wireless Microphone System:
| Parameter | Receiver | Transmitter (Handheld) |
|---|---|---|
| Sensitivity | 2/Mv | N/A |
| Transmit Power | N/A | 10Mv |
| Mirror Image Interference Ratio | >88Db | N/A |
| Sub-Harmonic | N/A | <40Db For Main Wave |
| Audio Output | 0-300Mv | N/A |
| Antenna | External Antenna | N/A |
| Frequency Stability | <0.002% | <0.002% |
| Neighborhood Interference Ratio | >90Db | N/A |
| Current Dissipation | N/A | <25Ma |
| Signal-To-Noise Ratio | >95Db | N/A |
| Format | N/A | Fixed Frequency |
| Operating Range | Standard Conditions 30 To 50 Meters | N/A |
| Battery | N/A | 1.5V AA Battery |
| Dynamic Range | N/A | >95Db System Distortion(<%, 1 Khz Modulation) |
Dimensions:
- Receiver: Approximately 21 cm (8.27 in) x 16 cm (6.29 in) x 4.3 cm (1.69 in)
- Handheld Microphone: Approximately 24 cm (9.45 in) in height
5. Setup Guide
Follow these steps to set up your LMBGM-R2 Wireless Microphone System:
- Unpack Components: Carefully remove all items from the packaging and ensure nothing is damaged.
- Connect Receiver Power: Connect the provided charger to the receiver's power input and plug it into a suitable power outlet.
- Connect Receiver to Audio System: Use the supplied 6.35mm audio cable to connect the receiver's audio output to an input on your mixer, amplifier, audio interface, or powered speaker. Ensure the connection is secure.
- Install Microphone Batteries: Open the battery compartment of each handheld microphone and insert two 1.5V AA batteries, observing the correct polarity (+/-).
- Position Antennas: Extend and position the external antennas on the receiver for optimal signal reception.
- Power On: Turn on the receiver and then each handheld microphone. The LED displays on both units should illuminate, indicating they are powered on and attempting to connect. Since the system uses fixed frequencies, the microphones and receiver should automatically pair.
- Volume Adjustment: Start with the volume on your audio system (mixer/amplifier) at a low level. Gradually increase it while speaking into the microphone to avoid sudden loud noises.
6. Operating Instructions
Power On/Off:
- To turn on the receiver, press the power button on the front panel.
- To turn on each microphone, slide the power switch located on the microphone body.
- To turn off, reverse the process: switch off microphones first, then the receiver.
Microphone Usage:
- Holding the Microphone: Hold the microphone firmly, pointing it towards the sound source (e.g., your mouth).
- Proximity: For best sound quality and to minimize feedback, maintain a consistent distance from the microphone, typically 2-6 inches (5-15 cm).
- Operating Range: The system has an effective operating range of 30-50 meters. Ensure you stay within this range for optimal performance and to avoid signal dropouts.
- Directionality: The microphones feature a heart-shaped (cardioid) pickup pattern, meaning they are most sensitive to sounds from the front and least sensitive to sounds from the rear. This helps to reduce background noise and feedback.
Application Scenarios:
7. Maintenance
Proper maintenance will extend the life and performance of your microphone system:
- Cleaning: Use a soft, dry cloth to clean the receiver and microphones. Do not use abrasive cleaners, solvents, or harsh chemicals. For microphone grilles, a soft brush can be used to remove debris.
- Battery Replacement: Replace microphone batteries when the low battery indicator appears on the microphone's LED display or when audio quality degrades. Always use fresh 1.5V AA batteries. Remove batteries if the microphones will not be used for an extended period to prevent leakage.
- Storage: Store the system in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Keep components in their original packaging or a protective case when not in use.
- Handling: Avoid dropping the microphones or receiver, as this can cause internal damage.
8. Troubleshooting
If you encounter issues with your LMBGM-R2 Wireless Microphone System, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from microphone | Microphone or receiver not powered on Low or dead batteries in microphone Receiver not connected to audio system Audio system volume too low Microphone muted | Ensure both microphone and receiver are powered on Replace batteries with fresh ones Check 6.35mm audio cable connection to audio system Increase volume on your mixer/amplifier Check if microphone has a mute function and is not activated |
| Interference or static noise | Operating outside range Obstructions between microphone and receiver Other wireless devices operating on similar frequencies | Move closer to the receiver (within 30-50m) Ensure a clear line of sight between microphone and receiver Turn off other wireless devices or move them away from the system |
| Weak or distorted sound | Low microphone battery Incorrect gain settings on audio system Microphone too far from mouth | Replace microphone batteries Adjust input gain on your mixer/amplifier Hold microphone closer to your mouth |
| Receiver LED display not working | Receiver not powered on Power adapter issue | Check power connection and ensure receiver is turned on Try a different power outlet or inspect the charger |
9. User Tips
To get the most out of your LMBGM-R2 Wireless Microphone System, consider these tips:
- Battery Management: Always carry spare AA batteries, especially for longer events, to avoid interruptions.
- Line of Sight: For the most stable connection, try to maintain a clear line of sight between the microphones and the receiver, minimizing physical obstructions.
- Feedback Prevention: Position speakers in front of the microphones, not behind them, and avoid pointing microphones directly at speakers to prevent audio feedback.
- Testing Before Use: Always perform a quick sound check before any event to ensure all components are working correctly and audio levels are set appropriately.
10. Warranty & Support
For any issues not covered in this manual or for further assistance, please contact your retailer or the manufacturer's customer support. Keep your purchase receipt as proof of purchase for warranty claims.
The manufacturer, LMBGM, is committed to providing quality products and support.
