1. Introduction
The G-MARK G5.1IEM wireless in-ear monitor system provides excellent sound quality, stable RF performance, and touring-grade features for professional audio applications. It utilizes patented audio reference companding technology and a dual-antenna diversity bodypack receiver to ensure clear and reliable monitoring. Compatible with 100 frequency channels, this system is designed to perform in demanding environments, offering freedom of movement and high-fidelity audio for performers and audio professionals.
2. Package Contents
Please check the box for the following items:
- 1 x Wireless In-Ear System Transmitter
- 1 x UHF Bodypack Receiver
- 1 x 6.35mm Audio Cable
- 1 x In-Ear Earbud
- 1 x Power Adapter
- 1 x Antenna
- 1 x User Manual
3. Product Overview
3.1 Transmitter (G-MARK G5.1 IEM)
- Listening Interface: 6.35mm headphone output for direct monitoring.
- Earphone Volume: Knob to adjust the headphone output level.
- HD Screen: Displays channel, frequency, and signal levels (PEAK, RF, AF).
- Frequency Modulation Knob: Used to navigate and select frequencies.
- ESC Function Button: Exits current menu or setting.
- Power ON/OFF: Button to power the unit on or off.
- SYNC Function Button: Initiates frequency synchronization with the bodypack receiver.
- DC IN (12V-18V): Power input for the transmitter.
- AF IN (R) / AF IN (L): XLR or 6.5mm universal sockets for audio input (Right and Left channels).
- AF Level (R/L) Knob: Adjusts the audio input level for each channel.
- Antenna Interface: Connection point for the UHF antenna.
3.2 Bodypack Receiver
- Display Screen: Shows channel, frequency, and battery status.
- Switch Knob: Controls power and volume.
- Earphone Input: 3.5mm jack for connecting in-ear earphones.
- Frequency Modulation Key: Buttons for adjusting frequency (Up/Down).
- LOW BATT ON: Indicator for low battery.
- RF: Indicator for RF signal reception.
- SET Key: Used to enter and confirm settings.
- ESC Key: Exits current menu or setting.
4. Setup
4.1 Transmitter Setup
- Connect the provided power adapter to the DC IN (12V-18V) port on the rear of the transmitter and plug it into a power outlet.
- Connect your audio source (e.g., mixer, audio interface) to the AF IN (R) and AF IN (L) ports using appropriate XLR or 6.5mm cables.
- Attach the antenna to the ANTENNA interface on the rear panel.
- (Optional) Connect headphones to the Listening Interface on the front panel for direct monitoring of the input signal.
4.2 Bodypack Receiver Setup
- Open the battery compartment on the bodypack receiver.
- Insert two AA batteries, ensuring correct polarity.
- Close the battery compartment.
- Connect your in-ear earphones to the Earphone Input (3.5mm jack) on the bodypack receiver.
5. Operation
5.1 Power On/Off
- Transmitter: Long press the POWER ON/OFF button on the front panel.
- Bodypack Receiver: Long press the Switch knob on the bodypack.
5.2 UHF Frequency Pairing (Synchronization)
To ensure proper operation, the bodypack receiver must be synchronized with the transmitter's frequency.
- On the Transmitter:
a. Press the SYNC button. The display will show frequency adjustment mode.
b. Turn the Frequency Modulation Knob to select your desired channel/frequency.
c. Press the SYNC button again to confirm the selection. - On the Bodypack Receiver:
a. Open the battery compartment to access the control buttons.
b. Press the SET key.
c. Use the Up/Down (triangle/inverted triangle) buttons to adjust the frequency point to match the transmitter's frequency.
d. Press the SET key again to confirm the frequency.
e. Finally, press ESC to exit the setting menu.
Once synchronization is complete, the RF indicator on both units should be active, indicating a successful connection.
5.3 Adjusting Volume
- Transmitter: Use the Earphone Volume knob on the front panel to adjust the monitoring volume for connected headphones.
- Bodypack Receiver: Use the Switch knob on the bodypack to adjust the volume of the connected in-ear earphones.
5.4 Mono/Stereo Setting
The bodypack receiver supports switching between mono and stereo modes. Refer to the specific buttons on the bodypack (often labeled 'Mono' or 'Stereo' or indicated by a dedicated 'SET' menu option) to adjust this setting according to your monitoring needs.
6. Specifications
6.1 General Specifications
- Brand Name: G-MARK
- Model Number: IEM G5.1
- Communication: Wireless
- Set Type: Transmitter Sets
- Transducer: Condenser Microphone
- Use: Stage Performance, Recording, SINGING, Karaoke Microphone
- Style: In-ear monitoring system, Lavalier Microphone
- Material: Metal, Plastic
- Function: Noise Cancelling, With RGB lighting, RF performance
- Polar Pattern: Omni-directional
- Type: Wireless in-ear monitor system
- Product Name: In-ear monitor wireless
- Diaphragm: S-Mall
- Built-in Battery: No
- High-concerned Chemical: None
- Logo: Custom Logo Printed
- Package: Color Box
- Origin: Mainland China
6.2 Receiver Technical Parameters
| Parameter | Value |
|---|---|
| Oscillation method | PLL synthesized |
| Frequency Range | 520-580MHZ |
| Preset Channels | 40 channels |
| FM Method | Can be adjusted |
| Frequency Response | 80Hz-15KHz +3dB |
| Output Power | 2*35W |
| Headphone Load Impedance | >16Ω |
| Material | Plastic and metal |
6.3 Transmitter Technical Parameters
| Parameter | Value |
|---|---|
| Chassis Height | 1 U |
| Material | Metal |
| Frequency range | 520-580MHZ |
| Frequency Interval | 25MHZ |
| Number of channels | 40 channels |
| Transmit output power | 100mW |
| Audio input | XLR or 6.5mm universal socket |
| Headphone output | 6.5MM, volume adjustable |
| Current consumption | DC12V/250mA |
| Antenna input socket | TNC socket |
- Bodypack Receiver Dimensions (approx): 110mm (Height) x 100mm (Width)
- Transmitter Dimensions (approx): 210mm (Width) x 40mm (Height) x 145mm (Depth)
7. Maintenance
To ensure the longevity and optimal performance of your G-MARK G5.1IEM system, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of both the transmitter and receiver. Avoid using harsh chemicals or abrasive cleaners.
- Battery Care: Remove batteries from the bodypack receiver if it 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.
- Cable Management: Avoid sharp bends or kinks in cables to prevent damage.
- Antenna Care: Handle antennas carefully to prevent bending or breaking. Ensure they are securely connected during use.
8. Troubleshooting
If you encounter issues with your G-MARK G5.1IEM system, try the following solutions:
- No Audio/Signal:
a. Ensure both the transmitter and receiver are powered on.
b. Check that the power adapter is securely connected to the transmitter.
c. Verify that the audio input cables are correctly connected to the transmitter's AF IN ports.
d. Confirm that the in-ear earphones are properly plugged into the bodypack receiver.
e. Re-check the frequency pairing process (Section 5.2) to ensure the transmitter and receiver are on the same channel. - Poor Audio Quality/Interference:
a. Ensure the transmitter and receiver antennas are unobstructed and have a clear line of sight.
b. Try changing the operating frequency to avoid potential interference from other wireless devices (Section 5.2). The system offers 40 channels.
c. Check the AF Level (R/L) knobs on the transmitter to ensure input levels are not too high (causing distortion) or too low (causing noise).
d. Ensure the bodypack receiver batteries are not low. A low battery can affect signal stability. - Short Operating Range:
a. Ensure both the transmitter and receiver antennas are fully extended and positioned vertically.
b. Minimize obstructions (walls, large metal objects) between the transmitter and receiver.
c. Check for strong RF interference sources in the environment. - Bodypack Receiver Not Powering On:
a. Check the battery orientation inside the bodypack receiver.
b. Replace with fresh AA batteries.
9. User Tips
- Optimal Placement: For best performance, position the transmitter's antenna in a clear, elevated location, free from obstructions.
- Expandability: The G5.1IEM system supports an unlimited number of bodypack receivers, making it ideal for monitoring entire teams or bands on stage.
- Versatile Applications: This system is suitable for a wide range of uses including live stage performances, band rehearsals, studio recordings, presentations, and coaching.
- Rack Mounting: The transmitter unit can be installed into standard rack units for professional setups.
- Battery Life: Always carry spare AA batteries for the bodypack receiver, especially during live performances, to avoid unexpected interruptions.
10. Warranty and Support
This G-MARK G5.1IEM Wireless In-Ear Monitor system comes with a one-year warranty from the date of purchase. For any technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your retailer or the manufacturer's customer support directly. Keep your proof of purchase for warranty validation.
