Comica BoomX-D MI User manual

User Manual
2.4G Digital Dual-Channel Wireless Microphone
BoomX-D MI

Foreword
Main Features
Thanks for purchasing COMICA BoomX-D MI 2.4G Digital Dual-Channel Wireless Microphone.
To ensure bring you a good using experience, please read this manual book carefully before using and correctly
install and operate.
. 2.4G Digital Wireless, Global Free Frequency
. Dual-Channel 2.4G Wireless Microphone
. Visual Power, Audio Dynamic Monitor and
Other Display Functions
. Internal and External MIC Two Input Modes
. Real-time Audio Monitor
. Broadcasting Quality Audio
. RF Technology, Auto Freq. Adjustment, Stable Transmission
. Low Latency < 20ms
. Working Range Up to 50m
. Designed with Multi-functional Belt Clip and Compact
1

Notice
Due to 2.4G wireless characteristics, please keep face to face when use it, and don’t turn your back to the
receiver, otherwise it is easy to generate breakpoints, which is a normal phenomenon
Don't block the antenna position to avoid any poor signal generated
When using the playback recording function with devices of iOS system, it can not achieve it due to the protection
of the iOS system if the volume of the device is adjusted to the maximum before monitoring, you need to readjust
the volume of the device to realize playback recording (It is recommended that the headphone volume is not
adjusted to the maximum)
When using on mobile phone, please turn o WIFI and Bluetooth to avoid 2.4G wireless interference
This product belongs to high-precision instruments, please avoid falling, collision or pounding
Do not use this equipment in the vicinity of heat source or interference source, such as radiator, oven, refrigerator
or air conditioner, smartphone or next to the WIFI AP
If the pick-up distance is close or when used outdoors, please put on the wind mu to prevent sound burst or
reduce wind noise
Do not use the equipment in rain or in a damp environment to avoid short-circuit danger
Please keep the product in a dry environment
2

MI Receiver (MI RX)Transmitter(TX)
Please keep face to face when use it, and don’t turn your back to the receiver, otherwise it is easy to generate
breakpoints.
Don't block the antenna position to avoid any poor signal generated.
Face to receiver (correct)
Antenna position
Antenna position
Back to receiver (incorrect)
3

Packing List
MI1 = TX + MI RX MI2 = TX + TX + MI RX
MI Receiver (MI RX)Transmitter(TX)
Multiple Selections:
Main Parts:
4

3.5mm Mic Audio Input Cable
Wind Mu
USB A-USB C Charging Cable
Reset Pin
User Manual
Warranty Card
The accessories of each combination include:
Accessories:
1
2
3
4
5
6
① + ② + ③ + ④ + ⑤ + ⑥
MI1=
①x2 + ②x2 + ③ + ④ + ⑤ + ⑥
MI2=
6543
21
User Manual
2.4G Digital 1-Trigger-2Wireless Microphone
BoomX-D MI
5

Components and Instruction
Transmitter (TX)
1. External Mic Locking Buckle
2. 3.5mm TRS Port of External Mic
3. Internal Mic
4. Power/Muting Button
5. Pair Button
6. Belt Clip
7. USB-C Charging Port
8. Reset Hole
2
3
6
4
7
8
5
1
6

MI Receiver (MI RX)
1. Lightning Connector
2. Output Volume Adjustment Button+
3. Group A Working Status Indicator
4. Group B Working Status Indicator
5. Output Volume Adjustment Button-
6. 3.5mm TRS/TRRS Monitoring Port
2
3
4
5
6
1
7

Installation
Transmitter (TX)
1.Use internal microphone :
Install the transmitter on the collar through the belt clip so that the internal microphone points in the direction
of the sound source.
Internal Mic
Belt Clip
For better concealment during use, it is recommended that the belt clip be fixed and used outwards.
8

2.Use external microphone:
Insert the 3.5mm TRS microphone input cable into the transmitter's 3.5mm TRS external microphone port and
tighten it, then clip the transmitter to the belt through the belt clip and clip the lavalier microphone to your
collar.
When using an external microphone, the internal microphone is automatically turned o. 9

Insert the MI receiver (MI RX) into the Lightning interface of the phone; Insert the headphone into the 3.5mm
TRS/TRRS monitoring port for monitoring.
MI Receiver (MI RX)
10

Function and Usage
Transmitter (TX)
1.Screen Display Instruction:
A/B Channel Microphone Audio Dynamic Bar
Muting
Microphone Normal Working
Unpaired
in the Pairing
Paired Transmitter Battery Status
Signal Strength
A/B Channel is Connected
A/B Channel is not Connected
11

2.Function Introduction:
Long press for On/O; Short press for muting switch( Muting switch is available only when the screen is
on, if the screen is dimmed, press any button to light up the screen then switch the mute).
2.1. Power/Muting Button
Long press for pairing with receiver (Pairing switch is available only when the screen is on, if the screen is
dimmed, press any button to light up the screen then pairing).
2.2. Pair Button
Connect the transmitter with the power through the USB A-USB C charging cable to charge.
2.3. USB-C Charging Port
12

If there is an abnormal phenomenon such as the device is crash or unable to turn on it, then insert the reset
pin into the reset hole to reset it.
2.4. Reset Hole
Insert the 3.5mm TRS microphone input cable, and you can use the external lavalier microphone for
recording. At this time, the internal microphone of this device is turned o.
2.5. 3.5mm TRS Microphone Port
13

MI Receiver (MI RX)
Function Introduction:
Insert into the Lightning interface of phone to use.
1. Lightning Connector
Short press to adjust the output volume (6 levels), and A/B channel is synchronized.
2. Output Volume Adjustment Button
14

Insert headphone to monitor.
4. 3.5mm TRS/TRRS Monitoring Port
The indicator is red when unpaired. After paired, the indicator is blue.
3. A/B Working Status Indicator
15

MI Receiver (MI RX)
MI Receiver (MI RX)
The transmitter (TX) is pairing with MI Receiver (MI RX)
The channel indicator on the MI receiver
(MI RX) changes from red to blue
Pairing Method
(All have been paired at the factory. If you need to re-pair, please follow the description)
Transmitter (TX)
The screen icon changes from to after pairing
Transmitter (TX)
16

Two transmitters (TX) are pairing with MI Receiver (MI RX)
The first paired transmitter
The second paired transmitter
(A channel) (A channel)
(B channel)
17

Specification
Transmitter (TX)
Wireless Band
Transmitting Power
Receiving Sensitivity
Antenna
Polar Pattern
Frequency Response
Sound Delay
External Mic Input Interface
Battery
Battery Life
Net Weight
Dimension
Operating Temperature
2400 ~ 2483.5MHz
+10dBm
-86dBm
PCB Antenna
Omnidirectional
80Hz ~ 20kHz
<20ms
3.5mm TRS
Built-in Li-ion Battery 300mAh 3.7V
5 Hours
29g
39 x 22 x 55mm
0℃~ 50℃
18

MI Receiver (MI RX)
Wireless Band
Transmitting Power
Receiving Sensitivity
Antenna
Volume Levels
Sound Delay
Data Interface
Monitoring Interface
Net Weight
Dimension
Operating Temperature
2400 ~ 2483.5MHz
+10dBm
-86dBm
PCB Antenna
6 Levels (3dB/Level)
<20ms
Lightning
3.5mm TRS/TRRS
19g
33 x 13 x 70mm
0℃~ 50℃
19