MOREGAX M18

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MOREGAX M18 Bluetooth 5.3 Audio Receiver Transmitter

User Instruction Manual

1. Introduction

The MOREGAX M18 is a versatile Bluetooth 5.3 audio adapter designed to function as both a receiver and a transmitter. It allows you to seamlessly integrate Bluetooth connectivity into your existing home stereo systems, televisions, computers, and other audio devices. With support for multiple input/output options including USB, RCA, 3.5mm AUX, DAC, Coaxial, and Optical, the M18 provides a comprehensive solution for your audio needs. Its upgraded design features intuitive knob controls, vibrant RGB lighting, and a remote control for enhanced user experience.

2. What's in the Box

  • 1 x Bluetooth Adapter (MOREGAX M18)
  • 1 x AUX 3.5mm Cable
  • 1 x RCA Cable
  • 2 x Bluetooth Antennas
  • 1 x USB Power Cable
  • 1 x Remote Control
  • 1 x User Manual

3. Product Overview and Features

The MOREGAX M18 is engineered for high-fidelity audio transmission and reception, offering a range of features to enhance your listening experience.

MOREGAX M18 Bluetooth Audio Receiver Transmitter with remote and cables

Figure 3.1: MOREGAX M18 Bluetooth Audio Receiver Transmitter and included accessories.

3.1 Key Features

  • Bluetooth 5.3 Technology: Equipped with a high-performance DSP and Bluetooth 5.3 chip, ensuring clear audio, reduced sound loss, enhanced interference immunity, and stable connections.
  • Dual Functionality (RX/TX): Operates as both a Bluetooth receiver (RX) to stream audio to wired speakers/amplifiers and a Bluetooth transmitter (TX) to send audio from wired sources to Bluetooth headphones/speakers.
  • Upgraded Knob & RGB Design: Features a multi-functional knob for power on/off, volume adjustment, and bass/treble control. The integrated RGB lighting changes color based on the device's operational state, adding a visual element.
  • Wider Compatibility: Supports various audio inputs/outputs including 3.5mm AUX, RCA, Optical, Coaxial, and USB flash drives for versatile connectivity. Includes a 6.5mm microphone connector for direct microphone input.
  • Extended Long Range: Dual-antenna design provides a line-of-sight range of up to 160 feet (50 m) outdoors and 80-110 feet (25 m-35 m) indoors. Note that physical obstacles may affect range.
  • Infrared Remote Control: Allows for convenient control of volume, track selection, input switching, microphone volume/echo, and EQ settings from a distance.
  • Built-in Battery: Features a 1200mAh Lithium battery providing up to 6-8 hours of continuous listening, with approximately 1.5 hours charging time and 30 days standby time.
Close-up of the M18's RGB illumination lamp on the volume knob, showing colorful light effects.

Figure 3.2: The M18 features an RGB illumination lamp around the main volume knob, providing visual feedback and enhancing the aesthetic.

Diagram showing the Bluetooth 5.3 chip and DSP sound process chip inside the M18.

Figure 3.3: Internal view highlighting the Bluetooth 5.3 and DSP chips for superior audio performance.

4. Setup Guide

4.1 Initial Setup

  1. Install Antennas: Screw the two provided Bluetooth antennas into the antenna ports on the back of the M18 unit. Ensure they are securely tightened.
  2. Power Connection: Connect the USB power cable to the M18's power input port and plug the other end into a suitable USB power adapter (not included) or a USB port on a device like a TV or computer.
  3. Power On: Rotate the main volume knob clockwise to turn on the device. The RGB lighting will illuminate.

4.2 Connecting Audio Devices

The M18 supports various audio connections depending on whether you are using it as a receiver (RX) or transmitter (TX).

4.2.1 Receiver Mode (RX) Setup

In RX mode, the M18 receives Bluetooth audio from your phone, tablet, or computer and outputs it to a wired audio system (e.g., home stereo, wired speakers).

  1. Set Mode: Ensure the RX/TX switch on the front panel is set to RX.
  2. Connect to Audio System: Use the provided RCA or 3.5mm AUX cable to connect the M18's output ports (RCA L/R or 3.5mm AUX) to the input ports of your amplifier, active speakers, or home stereo system.
  3. Pair Bluetooth: On your mobile device, search for Bluetooth devices and select "MOREGAX M18" to pair. Once connected, audio from your device will play through your wired audio system.
A person using a smartphone to stream music to the M18 in Receiver Mode, connected to a stereo system.

Figure 4.1: Connecting the M18 in Receiver Mode (RX) to a home stereo system.

4.2.2 Transmitter Mode (TX) Setup

In TX mode, the M18 takes audio from a wired source (e.g., TV, computer, projector) and transmits it wirelessly to Bluetooth headphones or speakers.

  1. Set Mode: Ensure the RX/TX switch on the front panel is set to TX.
  2. Connect Audio Source: Use an appropriate cable (RCA, 3.5mm AUX, Optical, or Coaxial) to connect your audio source (e.g., TV's audio output) to the corresponding input ports on the M18. Note: Optical and Coaxial inputs are primarily used in Transmitter mode.
  3. Pair Bluetooth Headphones/Speakers: Put your Bluetooth headphones or speakers into pairing mode. The M18 will automatically search for and connect to nearby Bluetooth audio devices.
A person watching TV with Bluetooth headphones connected via the M18 in Transmitter Mode.

Figure 4.2: Using the M18 in Transmitter Mode (TX) to connect a TV to Bluetooth headphones.

5. Operating the M18

5.1 Front Panel Controls

Close-up of the M18's front panel showing input indicators and the mode switch.

Figure 5.1: Front panel controls and input indicators.

  • MIC Input: 6.5mm jack for connecting a wired or wireless microphone.
  • Input Indicators (BT, USB, OPT, COA, LINE): LEDs indicate the currently selected audio input source.
  • MODE Switch (RX/TX): Toggles between Receiver and Transmitter modes.
  • IR Sensor: Receives signals from the remote control.
  • Volume Knob (with RGB): Rotates to adjust master volume. Press to cycle through input sources. The RGB lighting indicates operational status and adds visual flair.
  • TREBLE Knob: Adjusts the treble (high frequency) level of the audio output.
  • BASS Knob: Adjusts the bass (low frequency) level of the audio output.

5.2 Remote Control Functions

The included infrared remote control provides convenient access to various functions.

Image of the M18's remote control with various buttons labeled for functions like volume, track, signal switch, and EQ.

Figure 5.2: Infrared Remote Control for the MOREGAX M18.

  • Power Button: Turns the unit OFF. Note: The unit cannot be turned ON using the remote control; it must be turned on manually via the main volume knob.
  • Volume +/-: Adjusts the master volume.
  • Previous/Next Track: Navigates through tracks during USB or Bluetooth playback.
  • Play/Pause: Controls playback during USB or Bluetooth playback.
  • Signal Switch: Cycles through input sources (BT, USB, OPT, COA, LINE).
  • MIC Volume +/-: Adjusts microphone input volume.
  • ECHO +/-: Adjusts microphone echo effect.
  • EQ Button: Cycles through preset equalizer modes.

6. Troubleshooting

ProblemPossible CauseSolution
No sound output.Incorrect mode (RX/TX), wrong input selected, cables loose, volume too low, paired to wrong device.Verify RX/TX switch position. Press the volume knob or use remote to cycle inputs. Check all cable connections. Increase volume on M18 and connected devices. Ensure correct Bluetooth device is paired.
Cannot pair Bluetooth device.M18 not in pairing mode, device too far, interference, previously paired device connected.Ensure M18 is in RX mode. Move device closer. Turn off Bluetooth on other nearby devices. Disconnect from previously paired devices. Restart M18 and Bluetooth device.
Short Bluetooth range or intermittent connection.Physical obstacles (walls, furniture), interference from other wireless devices (Wi-Fi routers), antennas not properly installed.Ensure antennas are securely attached. Relocate M18 or connected device to minimize obstacles. Avoid placing near Wi-Fi routers or other strong wireless signals.
Remote control not working.Line of sight blocked, batteries dead, unit not powered on (for power-on function).Ensure clear line of sight to the M18's IR sensor. Replace remote batteries. Remember, the remote can only turn the unit OFF, not ON.
Microphone not working.Microphone not connected properly, MIC volume too low.Ensure microphone is fully inserted into the 6.5mm jack. Increase MIC volume using the remote control.

7. Specifications

FeatureDetail
Model NumberM18
Product Dimensions4.6 x 4.3 x 1.6 inches (11.7 x 10.9 x 4.1 cm)
Item Weight1.12 pounds (0.51 kg)
Connectivity TechnologyBluetooth 5.3
Audio Output ModeStereo, Surround (5.1)
Connector TypesRCA, USB, 3.5mm Jack, Optical, Coaxial, 6.5mm Microphone
Special FeatureBuilt-in Microphone input, RGB Lighting, Treble/Bass Control
Battery1 Lithium Polymer battery (included), 1200mAh capacity
Operating RangeUp to 160 feet (50 m) outdoors, 80-110 feet (25 m-35 m) indoors (line of sight)

8. Warranty and Support

MOREGAX is committed to providing high-quality products and excellent customer service. If you encounter any issues or require technical assistance with your M18 Bluetooth Audio Receiver Transmitter, please do not hesitate to contact us.

For support, please reach out through the Amazon message system or refer to the contact information provided in the physical user manual included with your product. Our team is ready to assist you with any questions or concerns.

© 2025 MOREGAX. All rights reserved.

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