COMICA BoomX-U QUA 4-Channel UHF Wireless Lavalier Lapel Microphone System Instruction Manual

1. Introduction

The COMICA BoomX-U QUA is a professional 4-channel UHF wireless microphone system designed for high-quality audio capture. It features four transmitters and one receiver, allowing for simultaneous recording of up to four individuals. This system is ideal for various applications including video recording, vlogging, podcasting, interviews, and live streaming, offering flexible audio mixing and monitoring capabilities.

2. Package Contents

Please check that all the following items are included in your package:

1x Receiver (BOOMX-U QUA)
4x Transmitters (BOOMX-U QUA)
4x 3.5mm TRS Lavalier Microphones
4x Microphone Wind Muffs
1x 3.5mm TRS-TRS Audio Cable
1x 3.5mm TRS-TRRS Audio Cable
1x 3.5mm TRS-Dual XLR Audio Cable
1x 3-in-1 USB-C Charging Cable
1x Cold-shoe Quick Release Plate
1x User Manual
1x Warranty Card
1x Carry Case

COMICA BoomX-U QUA Package Contents — **Image:** The COMICA BoomX-U QUA system components laid out, including the receiver, four transmitters, lavalier microphones, cables, and carry case.

3. Component Overview

3.1 Transmitter (TX)

External Mic Locking Buckle: Secures the external lavalier microphone.
3.5mm TRS Port of External Mic: Connects external lavalier microphones.
Power/Low Cut Filter Button: Long press to power on/off. Short press to activate/deactivate low-cut filter.
Muting Button: Long press to mute/unmute.
Power/Low Cut Filter Indicator Light: Indicates power status and low-cut filter activation.
Audio Status Indicator Light: Indicates audio input status (blue for normal, red for crackled/overload).
Belt Clip: For attaching the transmitter to clothing or a belt.
Antenna: Foldable antenna for signal transmission.
Internal Mic: Built-in omnidirectional condenser microphone.
IR Sensor: For pairing with the receiver.
USB-C Charging Port: For charging the transmitter.
Reset Hole: Insert a reset pin to reset the device if abnormal issues occur.

COMICA BoomX-U QUA Transmitter Features — **Image:** Detailed view of the COMICA BoomX-U QUA transmitter, highlighting its buttons, ports, and internal microphone.

3.2 Receiver (RX)

ABCD Channel Working Status Indicators: Blue light indicates successful pairing for corresponding group.
LCD Screen: Displays working status, settings menu, output mode, and battery level.
Menu Function Button +/-: Navigates menus and adjusts settings.
Function Setting Button: Enters menu or confirms settings.
Power/Menu Back Button: Long press for power on/off. Short press to go back to the previous menu.
Group A/B & Mix Audio Output Port: Audio output for channels A/B or mixed audio.
Group C/D & Mix Audio Output Port: Audio output for channels C/D or mixed audio.
3.5mm TRS/TRRS Monitor Port: For real-time audio monitoring with headphones.
IR Sensor: For pairing with transmitters.
Antennas: Foldable antennas on both sides, adjustable from 0-270 degrees for optimal signal.
USB-C Charging Port: For charging the receiver.

COMICA BoomX-U QUA Receiver Features — **Image:** Close-up view of the COMICA BoomX-U QUA receiver, showing its LCD screen, control buttons, and output ports.

4. Setup Guide

4.1 Attaching the Receiver to a Camera

Attach the cold-shoe quick release plate to the bottom of the receiver.
Slide the receiver (with the plate) onto your camera's cold-shoe mount or a tripod.
Tighten the lock plate to secure the receiver.
Unfold the receiver antennas to 180 degrees for the best signal reception.

COMICA BoomX-U QUA Receiver Mounted on Camera — **Image:** The COMICA BoomX-U QUA receiver mounted on top of a camera, with its antennas extended.

4.2 Connecting Microphones to Transmitters

You can use either the built-in internal microphone or an external lavalier microphone:

Internal Mic: The transmitter has a built-in omnidirectional condenser microphone on top, which can be used directly.
External Lavalier Mic: Plug the 3.5mm TRS lavalier microphone into the 3.5mm TRS port on the transmitter. Ensure the external mic locking buckle is used to prevent accidental disconnection. When an external microphone is connected, the internal microphone will be automatically turned off.

4.3 Connecting Receiver to Recording Device

Depending on your recording device, use the appropriate audio cable:

For Cameras/Recorders with 3.5mm TRS input: Use the provided 3.5mm TRS-TRS audio cable.
For Smartphones/Devices with 3.5mm TRRS input: Use the provided 3.5mm TRS-TRRS audio cable.
For Professional Audio Mixers/Recorders with XLR input: Use the provided 3.5mm TRS-Dual XLR audio cable.

COMICA BoomX-U QUA Connectivity Options — **Image:** Diagram illustrating various connectivity options for the COMICA BoomX-U QUA receiver with different recording devices.

5. Operating Instructions

5.1 Power On/Off

Transmitter: Long press the Power/Low Cut Filter Button to power on or off.

Receiver: Long press the Power/Menu Back Button to power on or off.

5.2 Muting

Transmitter: Long press the Muting Button to switch between normal recording and mute. The red light of the audio status indicator stays on when muted. The blue light flashes when sound is input, and the red light is on when the sound is crackled.

5.3 Low-Cut Filter

Transmitter: Short press the Power/Low Cut Filter Button to activate the low-cut filter. The purple light keeps on when activated.

5.4 Pairing (Synchronization)

The system supports both manual and automatic pairing:

Manual Pairing:
1. On the receiver, press the Function Setting Button to enter the menu.
2. Navigate to "Channel" using the Menu Function Buttons (+/-) and press the Function Setting Button to confirm.
3. Select the desired channel (A, B, C, or D) for the transmitter you want to pair.
4. Press the Function Setting Button to make the channel name display orange.
5. Adjust to the desired channel number using the Menu Function Buttons (+/-) and press the Function Setting Button again to confirm.
6. Navigate to "Sync" in the menu and press the Function Setting Button.
7. Select the corresponding channel (e.g., Sync A) and press the Function Setting Button. When it displays orange, press the up and down buttons to adjust to "Yes".
8. Keep the IR sensor of the transmitter and receiver closely aligned, and then press the Function Setting Button again to synchronize. When successful, it will show "OK" and the corresponding indicator light on the receiver will light up blue.
Automatic Pairing (Auto Scan):
1. On the receiver, press the Function Setting Button to enter the menu.
2. Navigate to "Auto Scan" using the Menu Function Buttons (+/-) and press the Function Setting Button to confirm.
3. The receiver will automatically select the most suitable channel for the current environment.
4. Then, enter "Sync" to synchronize as described in manual pairing step 5.1.8.

5.5 Output Modes

The receiver supports two output modes:

Mix None Mode (Four independent audio tracks output): In this mode, the four-channel audios can be output as individual tracks, allowing for professional post-editing.
Mix All Mode (Four groups mixed into one audio track output): All four channels are mixed into a single audio track for simplified recording.

COMICA BoomX-U QUA Mix None Mode — **Image:** Diagram illustrating the Mix None mode, where four independent audio tracks are outputted from the receiver.

COMICA BoomX-U QUA Mix All Mode — **Image:** Diagram illustrating the Mix All mode, where all four audio groups are mixed into a single audio track output.

5.6 Gain Adjustment

The receiver allows for 16-level gain adjustment (from 0 to 15) for each channel separately. This helps optimize audio levels for different recording environments and input sources.

COMICA BoomX-U QUA 16-Levels Gain Adjustment — **Image:** The receiver's screen displaying the 16-level gain adjustment interface.

5.7 Real-time Monitoring

Plug 3.5mm TRS or TRRS headphones into the monitor port on the receiver to listen to the audio in real-time during recording. This ensures smooth recording and allows for immediate adjustments.

Video: A detailed guide on the features and setup of the COMICA BoomX-U QUA 4-channel UHF Wireless Microphone system, including real-time monitoring.

6. Charging

The transmitters and receiver are equipped with built-in rechargeable lithium batteries. Use the included 3-in-1 USB-C charging cable to connect the devices to a power bank or charging devices. When charging with a 5W and above power charger, it takes about 3 hours to fully charge a device. The battery life is up to 6.5 hours, and the system supports charging while in use.

COMICA BoomX-U QUA Charging Setup — **Image:** The COMICA BoomX-U QUA transmitters and receiver connected to a power bank using the 3-in-1 USB-C charging cable.

7. Usage Scenarios

The COMICA BoomX-U QUA is versatile and suitable for a wide range of applications:

Professional Shooting & Filming: Ideal for capturing audio in multi-camera setups.
Multi-person Interviews: With four transmitters, it's perfect for panel discussions or interviews with multiple subjects.
Daily Shooting & Vlogging: Provides clear audio for everyday content creation.
Live Streaming & Podcasting: Ensures high-quality sound for broadcasts and audio recordings.
Presentations & Events: Suitable for conferences, church services, weddings, and other events requiring clear voice amplification.

Video: Live-action footage demonstrating the COMICA BoomX-U QUA in various shooting and recording environments, highlighting its versatility.

Video: An overview of the COMICA BoomX-U QUA, showcasing its multi-person recording capabilities and various applications in professional and daily shooting scenarios.

8. Technical Specifications

Brand: COMICA
Model Name: BOOMX-U QUA
Connectivity Technology: UHF
Connector Type: 3.5 mm Jack
Special Feature: Clip
Compatible Devices: Camcorder, Camera, Laptop, Smartphone
Included Components: Battery
Polar Pattern: Omnidirectional
Impedance: 2200 Ohms
Microphone Form Factor: Microphone System
Power Source: Battery Powered
Number of Batteries: 4 Lithium Ion batteries required (included)
Signal-to-Noise Ratio: 90 dB
Hardware Platform: Camcorder, Camera, Smartphone
Number of Channels: 24
Frequency Response: 80 Hz
Frequency Range: 568.125 - 591.875 MHz
Audible Noise: 19 Decibels
Enclosure Material: Metal, Plastic

9. Troubleshooting

If you encounter any issues with your COMICA BoomX-U QUA system, please consider the following:

No Sound/Low Volume: Check all cable connections, ensure transmitters and receiver are powered on, verify gain settings on both the receiver and your recording device, and confirm the transmitters are not muted.
Interference/Poor Signal: Ensure antennas are fully extended and positioned correctly. Try re-pairing the devices using the auto-scan function to find a clearer channel. Avoid obstacles between transmitters and receiver.
Device Not Responding: Try inserting a reset pin into the reset hole on the transmitter or receiver to perform a hard reset.
Battery Issues: Ensure devices are fully charged. If charging is slow or not working, try a different USB-C cable or power adapter.

10. Warranty & Support

The COMICA BoomX-U QUA comes with a 1-year warranty. For detailed warranty information, claims, or further technical support, please refer to the warranty card included in your package or visit the official COMICA website.