1. Product Overview
The DYNASONIC 3rd Generation Karaoke Microphone Speaker (Model 025-12) is a versatile portable audio system designed for entertainment. It combines a Bluetooth speaker, FM radio, and media player with a dedicated karaoke function, making it ideal for various uses, from personal listening to group singing sessions. Its compact design and rechargeable battery ensure portability and convenience.

Figure 1: Front view of the DYNASONIC Karaoke Microphone Speaker with the included microphone.
2. Package Contents
Please check the box for the following items:
- 1 x DYNASONIC Portable Bluetooth Karaoke Speaker (Model 025-12)
- 1 x Karaoke Microphone
- 1 x USB Charging Cable
- 1 x 3.5mm Auxiliary (AUX) Input Cable
- 1 x Remote Control
- 1 x User Manual (this document)
3. Key Features
The DYNASONIC Karaoke Microphone Speaker offers a range of functionalities:
- Bluetooth Connectivity: Seamlessly connect to smartphones, tablets, and other Bluetooth-enabled devices for wireless audio streaming.
- Karaoke Mode: Dedicated microphone input with independent volume control for singing along to your favorite tracks.
- Multiple Playback Options: Supports USB drives and SD cards for direct music playback.
- FM Radio: Built-in FM receiver to tune into your preferred radio stations.
- Auxiliary Input: 3.5mm jack for wired connection to non-Bluetooth devices like computers, TVs, or MP3 players.
- Portable Design: Equipped with a rechargeable internal battery for on-the-go use.
- Remote Control: Full-function remote for convenient operation from a distance.

Figure 2: Key features highlighted, including Bluetooth, USB, SD, AUX, remote control, rechargeable battery, karaoke mode, and FM radio.
4. Setup and Charging
4.1 Initial Charging
Before first use, it is recommended to fully charge the speaker's internal battery. Use the provided USB charging cable and connect it to any standard USB power adapter (not included) or a computer's USB port. The charging indicator light will typically show the charging status (refer to the device's display for specific indicators).
4.2 Powering On/Off
Locate the ON/OFF button on the control panel. Press and hold this button to turn the speaker on or off.
5. Operating Instructions
5.1 Mode Selection
Press the MODE button on the control panel or remote control to cycle through available modes: Bluetooth, FM Radio, USB, SD, and AUX.
5.2 Bluetooth Mode
- Turn on the speaker and select Bluetooth mode using the MODE button. The display will show "BLUE" or a similar indicator.
- Enable Bluetooth on your device (smartphone, tablet, etc.).
- Search for "DYNASONIC" or a similar device name in your device's Bluetooth settings.
- Select the speaker to pair. Once paired, you will hear a confirmation sound, and the display will indicate a successful connection.
- You can now play audio wirelessly from your device through the speaker.
5.3 FM Radio Mode
- Switch to FM Radio mode using the MODE button.
- Press the PLAY/PAUSE button (often labeled with a play symbol) to initiate an automatic scan for available radio stations. The speaker will save detected stations.
- Use the PREVIOUS/NEXT buttons to navigate between saved stations.
5.4 USB/SD Card Playback
- Insert a USB drive or SD card into the corresponding slot on the speaker.
- The speaker should automatically switch to USB or SD mode and begin playing compatible audio files. If not, select the mode manually using the MODE button.
- Use the PLAY/PAUSE and PREVIOUS/NEXT buttons to control playback.
5.5 AUX Input Mode
- Connect one end of the 3.5mm AUX cable to the speaker's AUX input jack.
- Connect the other end to the audio output jack of your external device (e.g., computer, TV, MP3 player).
- Switch the speaker to AUX mode using the MODE button.
- Audio from your external device will now play through the speaker.
5.6 Karaoke Function
- Connect the included microphone to the MIC1 input jack on the speaker's control panel.
- Ensure the microphone's ON/OFF switch is in the ON position.
- Adjust the microphone volume using the MIC VOL+ knob.
- Adjust the main speaker volume using the VOLUME+ knob.
- You can sing along to music playing from any source (Bluetooth, USB, SD, AUX).

Figure 3: Connecting the microphone to the speaker.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use abrasive cleaners or solvents.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Recharge the speaker regularly, even if not in use for extended periods.
- Water Exposure: This speaker is not waterproof. Avoid exposure to water or high humidity.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on. | Battery is low or depleted. | Charge the speaker using the USB cable. |
| No sound from speaker. | Volume is too low; incorrect mode selected; device not connected properly. | Increase volume; ensure correct mode (Bluetooth, AUX, USB/SD, FM) is selected; re-pair Bluetooth device or check AUX cable connection. |
| Bluetooth pairing fails. | Speaker is not in pairing mode; device Bluetooth is off; too far from speaker. | Ensure speaker is in Bluetooth mode; turn on Bluetooth on your device; move device closer to speaker (within 10 meters). |
| Microphone not working. | Microphone not plugged in correctly; microphone switch is OFF; microphone volume is low. | Ensure microphone is fully inserted into MIC1 jack; slide microphone switch to ON; increase MIC VOL+ knob. |
| FM radio reception is poor. | Weak signal; interference. | Try repositioning the speaker; extend any antenna if available (though not explicitly mentioned, common for portable radios). |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | DYNASONIC |
| Model Name | 025-12 |
| Connectivity Technology | Bluetooth, USB |
| Connector Type | Auxiliary (3.5mm Jack), USB |
| Power Source | Battery Powered |
| Included Components | Portable Bluetooth Speaker, Karaoke Microphone |
| Battery Composition | Lithium Polymer |
| Rechargeable Battery | Yes |
9. Warranty and Support
DYNASONIC provides comprehensive support and assistance for its products. Should you require any help or have questions regarding your speaker, please contact DYNASONIC customer service directly. They are committed to assisting you promptly.
For contact information, please refer to the product packaging or the official DYNASONIC website.