G-MARK K8 Professional Rechargeable Dual Channel UHF Wireless Microphone User Manual

Introduction

The G-MARK K8 is a professional dual-channel UHF wireless microphone system designed for various applications including weddings, stage performances, KTV, band performances, meetings, and hosting events. It features a rechargeable design, magnetic induction charging, and advanced UHF technology for stable signal transmission and clear audio. This manual provides detailed instructions for setting up, operating, and maintaining your G-MARK K8 system.

Product Overview

Package Contents

The G-MARK K8 wireless microphone system package includes the following items:

• 1 x Receiver Unit
• 2 x Wireless Microphones
• 2 x Anti-slip Sleeves
• 2 x Antennas
• 1 x Power Supply Adapter
• 1 x 6.35mm Audio Cable
• 1 x User Manual

Image: Contents of the G-MARK K8 wireless microphone system package.

Key Features

• Dual Channel UHF Wireless System: Operates on the 630-660MHz frequency range with 32 adjustable channels for interference-free performance.
• Rechargeable Microphones: Equipped with built-in rechargeable batteries, offering 3-5 hours of operation after a 2-hour charge.
• Magnetic Induction Charging: Microphones charge directly on the receiver unit via magnetic induction, preventing short circuits and ensuring convenient charging.
• High Performance Chip: Features a custom G-MARK chip for clear, full, and detailed sound reproduction.
• Effective Distance: Provides a reliable wireless transmission distance of up to 80 meters (approximately 262 feet) in open spaces.
• Audio Intelligent Noise Reduction: Enhances sound clarity by reducing unwanted background noise.
• Wide Compatibility: Connects to active speakers, audio mixers, computers, mobile phones, and vehicle systems with AUX input.
• Durable Design: Microphones feature a metal shell for a smooth, comfortable grip, and anti-fall/knock resistance.
• Minimalist Design: Receiver unit has a sleek design, including a folding form for portability.

Image: Icons representing key features such as 80m effective distance, integrated charging, noise reduction, UHF technology, real voice restoration, and 99% audio device compatibility.

Setup Instructions

1. Unpack Components: Carefully remove all items from the packaging and verify against the package contents list.
2. Install Antennas: Screw the two antennas onto the designated ports on the back of the receiver unit.
3. Connect Power Supply: Connect the provided power adapter to the receiver unit's power input and plug it into a suitable power outlet.
4. Connect to Audio System: Use the 6.35mm audio cable to connect the receiver's audio output to your mixer, speaker, amplifier, sound card, or other audio input device.
5. Charge Microphones: Place the wireless microphones into the charging slots on the receiver. The magnetic induction design will initiate charging. Ensure microphones are fully charged before first use (approximately 2 hours for 3-5 hours of use).
   

   Image: Microphones charging on the receiver via magnetic induction, highlighting the metal contact points.

   

   Image: Diagram illustrating various audio devices compatible with the G-MARK K8 system, including mixers, speakers, sound cards, amplifiers, and all-in-one systems.

6. Frequency Adjustment (Synchronization):

   To ensure proper communication between the microphones and the receiver, frequency synchronization may be required:

   1. Open the battery cover of the microphone.
   2. Press the frequency adjustment button once. The frequency displayed on the handheld microphone will change.
   3. Observe the receiver's display. When the frequency shown on the receiver matches the frequency of the handheld microphone, the adjustment is completed. Repeat for the second microphone if necessary.

Operating Instructions

1. Power On: Press the POWER button on the receiver unit to turn it on. Press and hold the power button on each microphone to turn them on.
2. Check Connection: Ensure the microphones are connected to the receiver. The receiver's display will show the active channel frequencies (CHA and CHB).
3. Adjust Volume: Use the individual volume controls on the receiver for each channel (CHA and CHB) to achieve the desired vocal balance.
4. Microphone Usage: Hold the microphone approximately 2-6 inches from your mouth for optimal sound capture. Avoid covering the microphone grille with your hand.
5. Panel Function Keys (Receiver):

   The receiver unit features several control buttons:

   • POWER: Turns the receiver unit on or off.
   • SET: Used for menu navigation or confirming selections.
   • DW: Used for decreasing values or navigating down in menus.
   • HD: Used for increasing values or navigating up in menus.
   • LED Light: Indicates power status or other operational modes.
   

   Image: Close-up of the receiver panel showing POWER, SET, DW, HD buttons and LED light indicators.

6. Power Off: Press and hold the power button on each microphone to turn them off. Press the POWER button on the receiver to turn it off.

Maintenance

• Charging: Regularly charge the microphones using the receiver's magnetic induction charging slots. A full charge takes approximately 2 hours and provides 3-5 hours of usage.
  

  Image: Illustration of microphone battery life (5 hours) and charging status indicators.

• Cleaning: Wipe the microphones and receiver with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: When not in use for extended periods, store the system in a cool, dry place away from direct sunlight and extreme temperatures. Ensure microphones are fully charged before storage to prolong battery life.
• Battery Care: The microphones use 18650 batteries. Avoid fully discharging the batteries frequently to maintain their lifespan.

Troubleshooting

No Sound Output:

• Ensure the receiver is powered on and connected correctly to your audio system.
• Verify that the microphones are powered on and fully charged.
• Check the volume levels on both the receiver and your audio system.
• Confirm that the microphone frequencies are synchronized with the receiver (refer to "Frequency Adjustment" in Setup Instructions).

Poor Sound Quality or Interference:

• Ensure the antennas on the receiver are properly installed and extended.
• Check for potential sources of interference (e.g., other wireless devices, Wi-Fi routers, large metal objects) and try to move the receiver away from them.
• Adjust the microphone frequencies if interference persists (refer to "Frequency Adjustment" in Setup Instructions).
• Ensure you are within the effective operating distance of 50-80 meters.

Microphone Not Charging:

• Ensure the microphones are correctly seated in the magnetic induction charging slots.
• Verify the receiver is powered on.
• Check the power supply connection to the receiver.

Microphone CH A shows "key display" and no frequency:

• This indicates a frequency synchronization issue. Follow the "Frequency Adjustment" steps in the Setup Instructions to re-synchronize the microphone with the receiver.

Specifications

Image: Detailed technical specifications for the G-MARK K8 wireless microphone system.

User Tips

• Frequency Synchronization: If you experience issues with a microphone not connecting or displaying a "key display" error, always re-check and re-synchronize the microphone's frequency with the receiver as described in the setup instructions.
• Optimal Charging: The magnetic induction charging system is designed for convenience and safety, preventing short circuits. Ensure microphones are properly seated for efficient charging.
• Battery Life: For best performance, fully charge microphones before each use. The 5-hour battery life is generally sufficient for most events, but keep an eye on the battery indicator on the microphone's display.
• Placement for Range: While the system boasts up to 80 meters range, optimal performance is achieved in open spaces. In environments with many obstacles or other wireless signals, the effective range might be reduced.

Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.