Introduction
Thank you for choosing the Lecoo MCS30 Wireless Portable Speaker. This device is designed to provide high-quality audio and voice amplification with versatile connectivity options. Please read this manual carefully before using the product to ensure proper operation and to maximize its lifespan.

Image: Two Lecoo MCS30 portable speakers, one white and one black, shown with their respective wired headset microphones. Both speakers feature an extendable antenna and front-facing controls.
Product Overview
The Lecoo MCS30 is a compact and powerful portable speaker featuring multiple input options and dual microphone support for amplification and recording. Familiarize yourself with the device's components and controls.
Front Panel Controls and Display

Image: Close-up front view of the black Lecoo MCS30 speaker, highlighting the digital display and the red control buttons for mode selection, track navigation, and microphone functions.
- Display Screen: Shows current mode, track information, and battery status.
- Mode (M) Button: Switches between Bluetooth, USB, AUX, and SD card modes.
- Previous/Volume Down Button: Short press for previous track, long press to decrease volume.
- Play/Pause Button: Plays or pauses audio.
- Next/Volume Up Button: Short press for next track, long press to increase volume.
- Microphone Button: Activates/deactivates microphone functions.
Side and Rear Connections

Image: Top-down view of the Lecoo MCS30 speaker, revealing the USB port, TF (SD card) slot, AUX input, and microphone input ports.
- MIC Input: For connecting external microphones (headset or lapel).
- USB Port: For USB flash drive playback.
- TF Card Slot: For SD card playback.
- AUX Input: For connecting external audio devices via a 3.5mm cable.
- DC 5V Charging Port: For charging the device.
- Power Switch: On/Off toggle.
- Antenna: Extendable antenna for improved signal reception (if applicable for radio functions).

Image: Rear view of the Lecoo MCS30 speaker, clearly showing the integrated red belt clip for portable use.
- Belt Clip: For attaching the speaker to clothing or a belt for hands-free use.
Setup
1. Charging the Speaker
- Connect the charging cable to the DC 5V port on the speaker.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The display will indicate charging status. A full charge typically takes 3-4 hours.
- Disconnect the charger once fully charged to preserve battery life.
2. Powering On/Off
- To power on, slide the power switch to the 'ON' position. The display will light up.
- To power off, slide the power switch to the 'OFF' position.
3. Initial Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth mode (the display will show 'BLUE' or a Bluetooth icon). If not, press the 'M' (Mode) button to switch.
- On your mobile device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select 'Lecoo MCS30' from the list of found devices.
- Once paired, the speaker will emit a confirmation sound, and the display will indicate a successful connection.
Operating Instructions
1. Bluetooth Playback
- After successful pairing, open your music player on your connected device and start playback.
- Use the speaker's 'Previous/Volume Down' and 'Next/Volume Up' buttons for track navigation (short press) and volume adjustment (long press).
- Use the 'Play/Pause' button to control playback.
2. USB/SD Card Playback
- Insert a USB flash drive into the USB port or an SD card into the TF card slot.
- The speaker will automatically switch to USB or SD card mode and begin playing MP3 files. If not, press the 'M' (Mode) button to select the correct mode.
- Use the speaker's control buttons for track navigation and volume adjustment.
3. AUX Input Playback
- Connect one end of a 3.5mm audio cable (not included) to the AUX input port on the speaker.
- Connect the other end to the headphone jack of your audio device.
- Press the 'M' (Mode) button until the speaker enters AUX mode.
- Start playback from your audio device. Volume can be controlled via both the speaker and the connected device.
4. Microphone Usage and Voice Recording
- Connect the headset microphone or a lapel microphone to the MIC input port.
- Press the 'Microphone' button to activate the amplification function. Your voice will be amplified through the speaker.
- To record your voice, ensure a USB flash drive or SD card is inserted. Press and hold the 'Microphone' button (or follow specific instructions if a dedicated record button exists, otherwise assume long press). The speaker will indicate recording has started.
- Press the 'Microphone' button again to stop recording. Recorded files are saved to the USB drive or SD card.
5. Volume Control
- Long press the 'Next/Volume Up' button to increase the volume.
- Long press the 'Previous/Volume Down' button to decrease the volume.
Maintenance
Cleaning
- Wipe the speaker's surface with a soft, dry cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents, as these may damage the finish.
- Avoid getting moisture into any ports or openings.
Storage
- Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- If storing for an extended period, charge the battery periodically (e.g., every 3 months) to maintain battery health.
Troubleshooting
- No Power:
Ensure the speaker is fully charged. Check the power switch is in the 'ON' position. - No Sound:
Check the volume level on both the speaker and the connected device. Ensure the correct input mode (Bluetooth, USB, AUX, SD) is selected. Verify cables are securely connected for AUX input. - Bluetooth Not Connecting:
Ensure the speaker is in Bluetooth pairing mode. Turn off and on Bluetooth on your device. Move the speaker closer to your device. Clear previous Bluetooth connections on your device and try pairing again. - Microphone Not Working:
Ensure the microphone is securely plugged into the MIC input. Press the 'Microphone' button to activate it. Check the microphone's own power source if it has one. - Recording Not Working:
Ensure a compatible USB flash drive or SD card is inserted and has sufficient free space. Check if the recording function is properly activated (refer to 'Microphone Usage and Voice Recording' section).
Specifications
| Feature | Description |
|---|---|
| Brand | Lecoo |
| Model | MCS30 |
| Connectivity Technology | Bluetooth 5.3, USB, AUX, SD Card |
| Output Power | 5W |
| Frequency Range | 100Hz-20KHz |
| Compatible Devices | Smartphone, Laptop, Karaoke Machine, MP3 Player, Tablet |
| Microphone Support | Dual Microphone (Headset/Lapel) with Amplification and Recording |
| Audio Format Support | MP3 |
| Color | Black |
Warranty and Support
The Lecoo MCS30 Portable Speaker comes with a Lecoo Turkey Warranty. For warranty claims or technical support, please refer to the warranty card included with your product or visit the official Lecoo website.
You can find more information and support by visiting the Lecoo Store on Amazon.