1. Introduction
The G-MARK X220U is a versatile UHF wireless microphone system designed for various applications including speeches, parties, street performances, karaoke, and live broadcasts. It features advanced digital audio transmission technology, automatic frequency matching, and a durable design, providing clear sound reproduction and freedom of movement.
This manual provides detailed instructions for setting up, operating, and maintaining your G-MARK X220U wireless microphone system to ensure optimal performance and longevity.
2. Package Contents
Please check the box for the following items:
- 1 x Wireless Receiver
- 2 x Wireless Handheld Microphones
- 3 x 18650 Lithium Batteries
- 1 x Power Charge Cable
- 2 x Roll Rings
- 1 x User Manual (this document)
3. Product Overview
3.1 Key Features
- Rechargeable Batteries: Includes three 18650 lithium batteries, providing 3-5 hours of operation after a 2-hour charge.
- Anti-interference: Features frequency locking to ensure stable wireless signal connection without external interference.
- Adjustable Frequency: Utilizes UHF frequency band (520-580MHz, 660-663MHz) with 2 channels for enhanced signal reception.
- G-MARK Exclusive Capsule: Equipped with a sensitive, high-fidelity microphone core and a shockproof, noise-proof silicone base.
- Automatic Frequency Recognition: Receiver and microphones automatically connect upon power-on, eliminating manual adjustment for subsequent uses.
- Durable Design: Microphones are wear-resistant and anti-fall, made from ABS material with spray paint finish.
- Flash Match Technology: Quick and easy frequency pairing.
- Mini Receiver: Compact, plug-and-play design for ease of operation and portability.
- Long Transmission Distance: Supports wireless UHF transmission up to 50 meters in open environments.
- Upgraded Audio Chip: Analog digital reverb processing for enhanced anti-howling.
3.2 Components
The system consists of two handheld microphones and one mini wireless receiver.
Microphone
- Switch: Power on/off button.
- SET Button: Used for flash matching and channel adjustment.
- DC-5V Charging Interface: Located at the bottom for recharging the internal lithium battery.
- Display Screen: Shows channel and battery status.
Wireless Receiver
- 6.35mm Audio Jack: For connecting to audio equipment (mixers, speakers, etc.).
- DC/5V Charging Interface: For recharging the internal lithium battery.
- ON/OFF Push Switch: To power the receiver on or off.
- Antenna: For wireless signal reception.
4. Setup
4.1 Battery Installation and Charging
- Microphones: Unscrew the bottom part of each microphone to access the battery compartment. Insert one 18650 lithium battery into each microphone, ensuring correct polarity.
- Receiver: The receiver also uses an internal 18650 lithium battery. Ensure it is properly installed.
- Initial Charge: Before first use, fully charge all batteries. Connect the power charge cable to the DC-5V charging interface on both the microphones and the receiver, then connect to a 5V USB power source. A full charge typically takes 2 hours.
4.2 Connecting the Receiver
- Insert the 6.35mm audio jack of the wireless receiver into the MIC input interface of your audio equipment (e.g., mixer, active speaker, portable audio system, projector).
- Ensure the receiver is securely connected.
5. Operating Instructions
5.1 Powering On/Off
- Receiver: Push the ON/OFF switch on the receiver to the 'ON' position. The indicator light will illuminate.
- Microphones: Press the power switch on each microphone. The display screen will light up, showing the channel and battery status.
- To power off, reverse the steps.
5.2 Automatic Pairing (Flash Match)
The G-MARK X220U system features automatic frequency recognition. Upon powering on both the receiver and microphones, they should automatically pair. The display on the microphone will show the connected channel (e.g., CHN A or CHN B).
5.3 Channel Adjustment for Multiple Microphones
If you are using two microphones simultaneously, they must be on different channels (e.g., one on CHN A and the other on CHN B) to avoid interference. If both microphones are on the same channel (CHN A or CHN B), they cannot be used at the same time.
To adjust a microphone's channel:
- Turn off the microphone you wish to adjust.
- Press and hold the power switch (or SET button, depending on model variation) for 7 seconds.
- Continue holding until the microphone turns on and the channel displayed on the screen changes (e.g., from CHN B to CHN A). Release the button.
- Once one microphone is on CHN A and the other on CHN B, they can be used simultaneously.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the microphone and receiver. Do not use abrasive cleaners or solvents.
- Battery Care: To prolong battery life, avoid fully discharging the batteries frequently. Recharge them regularly, especially if the system will not be used for an extended period. Store the batteries in a cool, dry place.
- Storage: When not in use, store the microphone system in a dry, dust-free environment, away from extreme temperatures and direct sunlight.
- Handling: Although designed to be wear-resistant and anti-fall, avoid dropping or subjecting the microphones to harsh impacts to prevent damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from microphone |
|
|
| Interference or poor sound quality |
|
|
| Two microphones cannot be used simultaneously |
|
|
| Short battery life |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand Name | G-MARK |
| Model | X220U |
| Microphone Type | Dynamic Microphone |
| Style | Handheld Microphone |
| Polar Patterns | Cardioid (Heart-shaped pointing) |
| Communication | Wireless (UHF) |
| Frequency Mode | UHF adjustable |
| Carrier Frequency Band | 520-580MHz, 660-663MHz |
| RF Bandwidth | 60MHz |
| Frequency Points | 30 |
| Audio Sampling Mode | 48KHz |
| Frequency Response | 50Hz - 18KHz |
| Dynamic Range | 96dB |
| Signal to Noise Ratio | 96dB |
| Transmitting Power | 10mW |
| Harmonic Radiation | <-50dBc |
| Distortion | <0.1% |
| Wireless Receiving Distance | 30-50 meters (accessible, open environment) |
| Power Supply | 1 x 1200mA 18650 Lithium Battery (3.7V) per device |
| Battery Life | 3-5 hours (after 2 hours charge) |
| Microphone Material | Plastic (ABS with spray paint finish) |
| Handheld Microphone Size | Approx. 26cm (Length) |
| Receiver Size | Approx. 22cm (Length, including antenna) |
| Certifications | CE, FCC, RoHS, WEEE |
9. User Tips
- Versatile Use: The G-MARK X220U is suitable for a wide range of scenarios, including street singing, large bars, multimedia rooms, home theaters, friends gatherings, and campus speeches. Its wireless nature provides freedom of movement for dynamic performances.
- Optimal Performance: For best results, ensure the microphone and receiver have a clear line of sight and are within the specified transmission range (up to 50 meters).
- Battery Management: The 1200mA lithium batteries offer long standby time. Always ensure they are fully charged before important events to avoid interruptions.
- Compatibility: The system is compatible with various audio equipment that has a MIC input interface, such as mixers, active speakers, portable audio systems, and projectors.
10. Warranty & Support
For detailed warranty information and customer support, please refer to the official user manual PDF or contact the seller directly.
A comprehensive user manual in PDF format is available for download: G-MARK X220U User Manual (PDF).
For any issues not covered in this manual, please reach out to G-MARK customer service or your point of purchase for assistance.
