Introduction
Welcome to the Singing Machine Kids SML654V HDMI Groove Mini Karaoke System user manual. This guide provides essential information for setting up, operating, and maintaining your new karaoke system. Please read these instructions carefully before use to ensure proper function and to maximize your enjoyment of the product.
Important Safety Information
To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified service personnel. Do not expose this appliance to rain or moisture. Do not place objects filled with liquids, such as vases, on the apparatus. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. Protect the power cord from being walked on or pinched. Only use attachments/accessories specified by the manufacturer.
Package Contents
Verify that all items listed below are included in your package:
- Singing Machine Kids SML654V HDMI Groove Mini Karaoke System
- 2 Wired Microphones
- HDMI Cable
- AC Power Adapter

Image: The Singing Machine Kids SML654V HDMI Groove Mini Karaoke System shown with one microphone detached from its holder, illustrating the included components.
Product Overview
Familiarize yourself with the controls and features of your karaoke system.

Image: A front view of the Singing Machine Kids SML654V HDMI Groove Mini Karaoke System, highlighting the control panel, speaker, and two microphones in their holders. Key controls include Mic Volume, Power, Lights, Function, Rec, Vocal, Voice Effects, USB port, Play/Pause, Skip buttons, Favor, Playlist, Master Volume, and Bluetooth indicator.
Control Panel Features:
- MIC VOLUME: Adjusts the volume of the connected microphones.
- POWER (⏻): Turns the unit on or off.
- LIGHTS: Toggles the multi-colored LED lights.
- FUNCTION: Selects input source (Bluetooth, USB, Line-In).
- REC: Initiates recording (functionality may vary by model/source).
- VOCAL: Reduces lead vocals on certain tracks.
- VOICE EFFECTS: Cycles through available voice-changing effects (Echo, Male, Female, Robot, Chipmunk, Radio).
- USB Port: For playing audio from a USB drive or connecting a CD+G drive.
- PLAY/PAUSE (⏸): Plays or pauses audio playback.
- SKIP (⏮, ⏭): Skips to the previous or next track.
- FAVOR/PLAYLIST: Manages favorite songs or playlists.
- MASTER VOLUME: Adjusts the overall system volume.
- Bluetooth Indicator: Shows Bluetooth connection status.
- HDMI Port: Connects to a TV for displaying lyrics.
- Microphone Inputs: Ports for connecting the wired microphones.
- Tablet Cradle: Secure resting place for a tablet or mobile device.
Setup
- Power Connection: Connect the AC power adapter to the DC IN jack on the back of the unit and plug the other end into a standard wall outlet.
- Microphone Connection: Plug the wired microphones into the MIC 1 and MIC 2 input jacks on the front of the unit.
- HDMI Connection (Optional): To display lyrics on your TV, connect one end of the included HDMI cable to the HDMI OUT port on the karaoke system and the other end to an HDMI input on your television. Select the corresponding HDMI input on your TV.
- Tablet/Mobile Device Placement (Optional): Place your tablet or smartphone securely in the integrated cradle on top of the unit.
Operating Instructions
Power On/Off
Press the POWER button (⏻) to turn the unit on. Press it again to turn the unit off.
Selecting a Source
Press the FUNCTION button repeatedly to cycle through available input sources: Bluetooth, USB, and Line-In (if applicable).
Bluetooth Pairing
- Turn on the karaoke system. The Bluetooth indicator will flash, indicating it is in pairing mode.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for "SINGING MACHINE" in your device's Bluetooth settings and select it to pair.
- Once paired, the Bluetooth indicator will stop flashing and remain solid. You can now stream audio wirelessly from your device.
Playing Music from USB
- Insert a USB flash drive containing MP3 or CD+G files into the USB port.
- Press the FUNCTION button to select USB mode.
- Use the PLAY/PAUSE (⏸) and SKIP (⏮, ⏭) buttons to control playback.
- If playing CD+G files, ensure your system is connected to a TV via HDMI to display lyrics.
Displaying Lyrics on TV (HDMI)
If you are playing CD+G files from a USB drive or a compatible external CD+G player connected via USB, and the system is connected to a TV via HDMI, lyrics will automatically display on your television screen.

Image: The Singing Machine Kids SML654V HDMI Groove Mini Karaoke System with a tablet placed in its cradle, displaying karaoke lyrics on the screen. This illustrates how a connected device can provide visual content for singing along.
Using Microphones and Voice Effects
- Microphone Volume: Adjust the MIC VOLUME knob to control the microphone's output level.
- Master Volume: Adjust the MASTER VOLUME knob to control the overall sound output of the system, including music and microphone audio.
- Voice Effects: Press the VOICE EFFECTS button repeatedly to cycle through the six available voice-changing effects: Echo, Male, Female, Robot, Chipmunk, and Radio.
- Vocal Reduction: Press the VOCAL button to reduce the lead vocals on compatible music tracks, allowing you to sing along more prominently.
Controlling LED Lights
Press the LIGHTS button to turn the multi-colored LED lights on or off. The lights synchronize to the music, enhancing the karaoke experience.
Recording (if available)
Press the REC button to initiate recording. Refer to the on-screen display or specific product documentation for details on how to save and access recordings.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the unit in a cool, dry place away from direct sunlight and extreme temperatures.
- Microphone Care: Handle microphones carefully. Avoid dropping them or exposing them to moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power adapter not connected or outlet not working. | Ensure the AC adapter is securely plugged into the unit and a working wall outlet. |
| No sound from speaker | Master Volume is too low or muted. Incorrect source selected. | Increase the MASTER VOLUME. Press FUNCTION to select the correct input source (Bluetooth, USB). |
| Microphone not working | Microphone not plugged in correctly. MIC VOLUME is too low. | Ensure the microphone is fully plugged into a MIC input. Increase the MIC VOLUME knob. |
| Bluetooth pairing failed | Device too far. Bluetooth not enabled on device. Incorrect device selected. | Move device closer. Ensure Bluetooth is enabled. Select "SINGING MACHINE" from your device's Bluetooth list. |
| Lyrics not displaying on TV | HDMI cable not connected. Incorrect TV input selected. Files are not CD+G format. | Verify HDMI cable connection. Select the correct HDMI input on your TV. Ensure USB files are in CD+G format. |
Specifications
- Model: SML654V
- Dimensions (W x H x D): 5.4 x 8.3 x 11.2 inches (13.7 x 21.1 x 28.4 cm)
- Weight: 3.75 pounds (1.7 kg)
- Connectivity: Bluetooth, USB, HDMI Out, Microphone Inputs
- Special Features: Six Voice-Changing Effects, Multi-colored LED Lights, Built-In Speaker, Tablet Cradle
- Power: AC Power Adapter (Input: 100-240V ~ 50/60Hz, Output: DC 9V)
Warranty and Support
Singing Machine products are designed for quality and reliability. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official Singing Machine website. You can also contact their customer support directly for assistance.
For further assistance, please visit: www.singingmachine.com/support





