Introduction
This manual provides essential information for the safe and efficient operation of your Naxa NDS-1218D Dual Bluetooth True Wireless Sync Party Speakers. Please read these instructions thoroughly before using the product and retain them for future reference. Proper use and maintenance will ensure optimal performance and longevity of your speakers.
Important Safety Instructions
- Read all instructions before operating the appliance.
- Keep these instructions for future reference.
- Heed all warnings on the appliance and in the operating instructions.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
Package Contents
Verify that all items listed below are included in your package:
- Naxa NDS-1218D Dual Bluetooth True Wireless Sync Party Speakers (2 units)
- Wired Microphone
- Speaker Stands (2 units)
- Power Adapter/Charging Cable
- Remote Control
- Instruction Manual
Product Overview
The Naxa NDS-1218D speakers are designed for portable audio playback with Bluetooth connectivity and True Wireless Sync (TWS) functionality. Each speaker features a 12-inch subwoofer and integrated disco lights.

Figure 1: Front view of a single Naxa NDS-1218D speaker on its stand, showcasing the speaker grille and disco light.
Control Panel
The main control panel is located on the rear of each speaker. Familiarize yourself with the various inputs and controls:

Figure 2: Detailed view of the NDS-1218D speaker's rear control panel, showing various knobs, buttons, and input ports.
- BASS Knob: Adjusts the low-frequency audio output.
- TREBLE Knob: Adjusts the high-frequency audio output.
- MIC.VOL Knob: Controls the volume level of the connected microphone.
- ECHO Knob: Adjusts the echo effect for the microphone input.
- MIC.IN Port: 1/4-inch input for connecting a wired microphone.
- MODE Button: Cycles through input modes (Bluetooth, AUX, USB, SD).
- REPEAT Button: Repeats the current track or playlist in USB/SD mode.
- PREV Button: Skips to the previous track in Bluetooth/USB/SD mode.
- PLAY/PAUSE Button: Plays or pauses audio playback.
- NEXT Button: Skips to the next track in Bluetooth/USB/SD mode.
- LED Display: Shows current mode, track number, or other status information.
- AUX.IN Port: 3.5mm input for connecting external audio devices via an auxiliary cable.
- AUX VOLUME Knob: Adjusts the volume level for the auxiliary input.
- VOLUME Knob: Master volume control for all audio outputs.
- USB Port: For playing audio files from a USB flash drive.
- SD Card Slot: For playing audio files from an SD memory card.
- Power Switch: Turns the speaker ON or OFF.
- Charging Port: Connects the power adapter for charging the internal battery.
Setup
Unpacking
- Carefully remove all components from the packaging.
- Inspect all items for any signs of damage. If any damage is found, do not use the product and contact customer support.
- Retain the packaging materials for future storage or transport.
Speaker Stand Assembly
The speakers can be placed on the included stands for optimal sound projection.

Figure 3: Both NDS-1218D speakers positioned on their respective stands, ready for use.
- Unfold the tripod base of the speaker stand. Ensure the legs are fully extended and stable.
- Adjust the height of the stand to your desired level and secure it using the locking pin and knob.
- Carefully lift one speaker and place it onto the top pole of the assembled stand. Ensure it is seated securely.
- Repeat for the second speaker.
Powering the Speakers
The NDS-1218D speakers are battery-powered and can be charged using the provided power adapter.
- Before first use, fully charge the speaker's internal battery. Connect the power adapter to the charging port on the rear control panel and plug it into a standard AC outlet.
- The LED indicator will show charging status (specific indicator behavior may vary, refer to the speaker's display).
- Once fully charged, disconnect the power adapter. The speakers can operate on battery power or while connected to the power adapter.
Operating Instructions
Power On/Off
To power on or off the speaker, toggle the Power Switch located on the rear control panel.
Bluetooth Pairing
- Ensure the speaker is powered on.
- Press the MODE button until the LED display indicates "BLUETOOTH" or a similar Bluetooth mode indicator. The speaker will enter pairing mode, and you may hear an audible prompt.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "NDS-1218D" from the list of devices.
- Once paired, the speaker will confirm with an audible tone or display change. You can now stream audio wirelessly.
True Wireless Sync (TWS) Function
The TWS function allows you to wirelessly connect two NDS-1218D speakers for a stereo audio experience.
- Ensure both NDS-1218D speakers are powered on and in Bluetooth mode, but not yet paired to any device.
- On one of the speakers (this will be your primary speaker), press and hold the MODE button for a few seconds until you hear a pairing tone, indicating TWS pairing mode.
- The two speakers will automatically search for and connect to each other. Once connected, you will hear a confirmation tone.
- Now, on your mobile device, search for Bluetooth devices and select "NDS-1218D". Only one instance of "NDS-1218D" should appear.
- Once your device is paired to the primary speaker, audio will play through both speakers in stereo.
Auxiliary Input (AUX)
To play audio from devices without Bluetooth, use the AUX input.
- Connect one end of a 3.5mm audio cable (not included) to the AUX.IN port on the speaker.
- Connect the other end of the cable to the headphone jack or audio output of your external device.
- Press the MODE button on the speaker until the LED display indicates "AUX" or a similar auxiliary mode indicator.
- Adjust the volume using the AUX VOLUME knob on the speaker and the volume control on your external device.
Microphone Usage
Connect the included wired microphone for karaoke or public address.
- Plug the wired microphone into the MIC.IN port on the rear control panel.
- Adjust the microphone volume using the MIC.VOL knob.
- Adjust the echo effect for the microphone using the ECHO knob.
Disco Light Operation
The NDS-1218D speakers feature integrated disco lights that illuminate the speaker cone, adding a visual element to your audio experience.

Figure 4: Close-up view of the speaker's front, demonstrating the active disco lights.
The disco lights typically activate automatically when the speaker is powered on. There may be a dedicated button on the control panel or remote control to toggle the lights on/off or change patterns. Refer to the specific markings on your unit or remote for light control options.
Maintenance
Cleaning
- Always power off and unplug the speaker before cleaning.
- Use a soft, dry cloth to wipe the exterior surfaces of the speaker.
- Do not use liquid cleaners, abrasive cleaners, or solvents, as these may damage the finish.
- Keep the speaker grilles free of dust and debris.
Storage
- Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- If storing for an extended period, ensure the battery is partially charged (around 50%) to help preserve battery life. Recharge periodically if stored for very long durations.
- Keep the speaker and accessories in their original packaging or a protective case to prevent damage.
Troubleshooting
If you encounter issues with your NDS-1218D speakers, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Battery is depleted. Power cable is not connected. | Connect the power adapter and charge the speaker. Ensure the power switch is in the ON position. |
| No sound from speaker. | Volume is too low. Incorrect input mode selected. Device not paired (Bluetooth). Audio cable not connected properly (AUX). | Increase the master VOLUME knob. Press the MODE button to select the correct input. Re-pair your Bluetooth device. Ensure audio cables are securely connected. |
| Bluetooth device cannot find the speaker. | Speaker is not in pairing mode. Speaker is already paired to another device. Device is out of range. | Ensure the speaker is in Bluetooth pairing mode (LED display shows "BLUETOOTH"). Disconnect from any previously paired devices. Move your device closer to the speaker (within 33 feet). |
| TWS pairing fails. | Speakers are already paired to a device. Speakers are too far apart. | Ensure both speakers are in Bluetooth mode and not paired to any external device before initiating TWS pairing. Place speakers closer together. |
| Microphone not working. | Microphone not connected. MIC.VOL knob is too low. | Ensure the microphone is securely plugged into the MIC.IN port. Increase the MIC.VOL knob. |
| Sound distortion. | Volume is too high. Audio source quality is poor. | Reduce the master VOLUME knob. Try a different audio source or lower its volume. Adjust BASS/TREBLE knobs. |
Specifications
Below are the technical specifications for the Naxa NDS-1218D Dual Bluetooth True Wireless Sync Party Speakers:
| Feature | Specification |
|---|---|
| Model Name | Dual Portable Party Speakers |
| Item Model Number | NDS-1218D |
| Speaker Type | Bookshelf |
| Audio Driver Type | Dynamic Driver |
| Speaker Size / Audio Driver Size | 12 Inches |
| Subwoofer Diameter | 12 Inches |
| Speaker Maximum Output Power | 4000 Watts |
| Frequency Response | 20000 Hz |
| Audio Output Mode | Stereo |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Range / Maximum Range | 33 Feet |
| Power Source | Battery Powered |
| Control Method | Remote |
| Product Dimensions (each speaker) | 13.4"D x 11.25"W x 20"H |
| Item Weight (each speaker) | 30.69 Pounds |
| Color | Black |
| Is Waterproof | FALSE |
| UPC | 840005015940 |
Warranty Information
The Naxa NDS-1218D speakers come with a Limited Warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official Naxa Electronics website. Keep your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or inquiries about your Naxa NDS-1218D speakers, please visit the official Naxa Electronics store or contact their customer service department.





