LMBGM Ear Monitor System Instruction Manual

LMBGM Ear Monitor System

Product Information

Specifications:

• UHF band Phase lock PLL
• 32MHz bandwidth with 40 preset frequencies
• Dynamic expansion circuit for improved signal-to-noise ratio
• Liquid crystal display panel
• Power and RF receiving indicator lamp
• Two No. 5 batteries for long service time
• Metal housing for durability
• Transmitter with balanced and unbalanced sharing socket
• Output monitoring phone jack on transmitter

Product Usage Instructions

1. Initial Setup:
   Before using the wireless monitoring system, carefully read the instruction manual. Ensure the transmitter and receiver are powered off initially.

2. Connecting the Transmitter:
   Connect the transmitter to your audio source using the appropriate cables. Make sure the transmitter is securely connected and powered on.

3. Receiver Operation:
   Power on the receiver and adjust the volume using the potentiometers on the front panel. You can switch between frequencies as needed.

4. Monitoring Audio:
   Use the headphone output to monitor the audio signal. Adjust the headphone volume using the dedicated potentiometer.

5. Power Management:
   Replace the batteries in both the transmitter and receiver as needed to ensure uninterrupted operation.

Frequently Asked Questions

Q: How many frequencies can be preset in the system?

A: The system allows presetting 40 frequencies within a 32MHz bandwidth for flexible switching.

Q: What type of batteries does the system use?

A: The system uses two No. 5 batteries for extended service time.

Q: Is the receiver durable?

A: Yes, the receiver features a metal housing for sturdiness and resistance to falls.

In used the unit before,please read the instruction manual carefully and keep the instruction manual properly in order to need in future.

Product presentation

1. This wireless Ear-monitor System is used in stage performances and sound broadcasts which can replace traditional complex sound monitoring equipment, and achieve admirable listening effect.
2. With using the latest high-frequency transmission and audio signal dynamic processing technology, also improves the signal-to-noise ratio of the dynamic range so that the system has the best Reduced interference to show the perfect original sound again.

Main features

• UHF band Phase lock PLL
• Among the band of 32MHz, the preset 40 frequencies can be arbitrary switching
• Dynamic expansion circuit greatly improves signal-to-noise ratio
• Elegant liquid crystal display panel
• With power and RF receiving indicator lamp
• With using two No. 5 batteries and an efficient power circuit, long service time
• Metal housing, sturdy and durable
• The transmitter adopts balanced and unbalanced sharing socket
• The transmitter is with output monitoring phone jack

Main function

The system consists of a mini receiver and transmitter combination, and its main function and characteristics are described below:

• Among the band of 32MHz, you can preset 40 frequencies which can be arbitrary switching.
• By using advanced circuit design, clear the receiving blind angle to make the system’s receiving signal steady. The system is strong and resistant to fall because the housing is made of tough metal material. It is the best choice of stage performance monitor product.

Front panel instruction of single channel receiver

1. Power switch
2. Function setting key: choose the function of setting
3. LCD display: show the operation of each item and set the content
4. USB function setting key: adjusted the function of USB play, volume control, etc.
5. Earphone volume potentiometer: adjusted the volume of the earphone
6. 6.3 earphone output socket: connecting the stereo earphone, monitoring the output signal
7. USB socket: connecting USB disk, MP3 audio frequency input
8. USB indicate light: to indicate the working condition of the USB disk

Back side panel instruction of single channel receiver

1. Antenna
2. Right channel potentiometer: adjusted volume
3. Left channel potentiometer: adjusted volume
4. Right channel output: can use balanced and unbalanced
5. Left channel output: can use balanced and unbalanced
6. DC power: connecting 12V DC power input socket, the voltage of the outlet center is positive voltage

The instruction way to use single channel transmitter

1. Turn on/off: long press the button “POWER”
2. Group choosing: ①pressed” ”, ② turned” ” to left or right to choose the frequency range you need.
3. Channel choosing: ①pressed 2x“ ”, ② turned“ ”to left or right to choose the frequency range you need.
4. USB using method:
5. Start/pause USB: insert USB or MP3, press” ” lightly
6. Choose music: turned” ” to the left or right to choose the last or next song
7. Adjusted USB volume: turned” ” to left or right to decrease or increase volume.

Single Channel Desktop Transmitter View

Single Channel Desktop Transmitter Front View

1. 6.35mm headphone output: connect stereo headphones, monitor output signal
2. Headphone volume potentiometer: adjust stereo headphone volume
3. SET selection: choose the setting function
4. LED: display operation and content
5. DOWN selection: choose the setting function
6. Power switch: turn on/turn off

Single Channel Desktop Transmitter Back View

1. DC power socket: connect with 12V DC power input socket, the socket center connects positive voltage
2. The left channel: balanced and unbalanced sharing input
3. The right channel: balanced and unbalanced sharing input
4. Left volume adjustment potentiometer
5. Right volume control potentiometer
6. Antenna

Double Channel Desktop Transmitter View

Double Channel Desktop Transmitter Front View

1. 6.35mm headphone output: connect stereo headphone, monitor output signal
2. Headphone volume potentiometer: adjust stereo headphone volume
3. SET seletion: choose setting function
4. LED: display operation and content
5. DOWN selection: choose setting function
6. Power switch: turn on/turn off

Double Channel Desktop Transmitter Back View

1. DC power socket: connect with 12V DC power input socket, the socketcenter connect positive voltage
2. The left channel: balanced and unbalanced sharing input
3. The right channel: balanced and unbalanced sharing input
4. Left volume adjustment potentiometer
5. Right volume control potentiometer
6. Antenna

Bodypack Transmitter

1. LED: Display working content
2. UP selection: choose the setting function
3. DOWN selection: choose the setting function
4. SET selection: choose the setting function
5. Power switch: turn on/turn off
6. Battery warehouse: after inserting two number 5 batteries, cover it
7. Low voltage indicator lamp: batteries work out
8. Volume peak indicator light
9. Mic input in
10. Mute switch
11. Antenna

Bodypack Receiver

1. LED: Display working content
2. UP selection: choose the setting function
3. DOWN selection: choose the setting function
4. SET selection: choose the setting function
5. Power switch: turn on/turn off
6. Battery warehouse: after inserting two number 5 batteries, cover it
7. low voltage indicator lamp: batteries work out
8. RF indicator light: indicates receiving signal information
9. Power switch + volume potentiometer: turn on or turn off and adjust the volume
10. 3.5mm headphone output: connect headphone
11. Antenna: assemble fixed antenna

System settings

Desktop transmitter Settings

1. Turn on/Turn off: long press POWER button
2. Group selection: 1 SET or press 2 Reverse to the left or right
3. Channel selection: 1 2xSET or press 2x 2 Reverse to the left or right

Bodypack Transmitter Settings

1. Turn on/Turn off: long press ON/OFF
2. Group selection: 1 SET 2
3. Channel selection: 1 2xSET 2

Bodypack Receiver Settings

1. Turn on/Turn off:
   Rotate volume potentiometer

2. Group selection: 1 SET 2 3 ESC

3. Channel selection: 1 2xSET 2 3 ESC

Usage illustration instruction

Technical Data

Transmitter

• Case specification: standard 1U
• Case material: metal panel
• Oscillation mode: PLL synthesized
• Frequency stability: ±0.005%
• Frequency range: UHF520-580MHz
• Frequency interval: 32MHz
• Preset Channel: 40 channels separately set 4groups
• Operate mode: manually adjust
• Max Deviation: ±48KHz
• Frequency response: 50Hz~15KHz±3dB
• Transmit output power: 100mW(50Ω)
• Harmonic: <4NW
• AF input: XLR, 中6.35mmjack
• Earphone output: 中6.35mm stereophonic socket
• Earphone load impedance: ≥16Ω
• Current consumption: DC 12V/250mA
• Antenna socket: TNC socket(50Ω)

Receiver

• Oscillation mode: PLL synthesized
• Frequency stability: ±0.005%
• Frequency range: UHF520-580MHz
• Frequency interval: 32MHz
• Preset Channel: 40channels separately set 4 groups
• Operate mode: manual adjust
• Receiving mode: single tuning
• Sensitivity: deviation 25 KHz, with connecting 7dBuV,S/N>78dB
• Max Deviation: ±48KHz
• Comprehensive S/N ratio: >94 db(1KHZ-A)
• Comprehensive T.H.D: <3%@1KHz
• Frequency response: 80Hz~15KHz±3dB
• Output power (32Ω): 2X35mw@1KHZ
• Earphone load impedance: ≥16Ω
• Output socket: 中3.5mm stereo earphone socket
• Volume output adjusts: adjust when using
• Power box: batteries AAX2
• Current drain: 3V/120mA
• Antenna: fixed 1/2λ

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