1. Product Overview
The NBVOICE All-in-1 Portable Speaker System is a versatile and powerful audio solution designed for various applications, from karaoke and live performances to outdoor gatherings and public speaking. Featuring a robust 180W output, powerful bass, and a 2-way powered 8-inch speaker, it delivers clear and loud sound. Its portable design, long battery life, and multiple connectivity options make it an ideal choice for music on the go.

Figure 1.1: NBVOICE All-in-1 Portable Speaker System with included accessories.
2. What's in the Box
Verify that all items are present upon unboxing:
- NBVOICE Portable Speaker System
- Portable Tote Bag
- Microphone
- Charging Cable
- Audio Cables (Aux, XLR)
3. Setup Guide
Follow these steps for initial setup:
- Unpacking: Carefully remove all components from the packaging.
- Charging the Battery: Before first use, fully charge the internal 1800 mAh lithium battery. Connect the charging cable to the speaker and a power outlet. The battery indicator will show charging status. A full charge takes approximately 4 hours.
- Placement: Place the speaker on a stable, flat surface. For optimal sound projection, consider using a compatible speaker stand (35mm insert supported).

Figure 3.1: The speaker is compatible with universal 35mm speaker stands for elevated sound projection.
4. Operating Instructions
4.1 Powering On/Off
To power on the speaker, locate the power switch on the rear panel and toggle it to the 'ON' position. The display will illuminate. To power off, toggle the switch to the 'OFF' position.
4.2 Bluetooth Connection
The speaker features built-in Bluetooth for wireless audio streaming with a range of up to 33+ feet.
- Power on the speaker. The display will show 'BT' indicating Bluetooth mode.
- Enable Bluetooth on your device (smartphone, tablet, etc.).
- Search for 'NBVOICE' in your device's Bluetooth settings and select it to pair.
- Once connected, you can stream audio wirelessly from your device.

Figure 4.1: Seamless wireless streaming with Bluetooth connectivity.
4.3 Using Inputs and Controls
The speaker is equipped with a 3-channel mixer and various inputs for diverse audio sources.

Figure 4.2: Detailed view of the 3-channel mixer and input panel.
- 1. Built-in 3-Channel Mixer: Allows for mixing multiple audio sources.
- 2. Dual XLR/1/4" Combo Mic/Line Input: Connect microphones or line-level instruments.
- 3. Independent Level Controls: Adjust the volume for each input channel independently.
- 4. 1/4" TRS Inputs: Additional inputs for instruments like guitars.
- 5. Headphone Input: For private monitoring of the audio output.
- 6. 3.5mm AUX Input: Connect external audio devices using a standard 3.5mm audio cable.
- 7. USB Inputs: Play audio files directly from a USB drive or charge compatible devices.
Adjust the Volume, Bass, and Reverb controls for each channel as needed to achieve your desired sound. The master volume controls the overall output level.
Video 4.3: Official product video demonstrating the features and portability of the NBVOICE 8-inch Portable All-in-one PA System with Bag.
5. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Do not use liquid cleaners or aerosols.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided tote bag for protection during transport and storage.
- Battery Care: For optimal battery life, avoid fully discharging the battery frequently. Recharge it regularly, even if not in use for extended periods.
- Ventilation: Ensure proper ventilation around the speaker to prevent overheating. Do not block any vents.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery drained; Power cable not connected | Charge the battery; Ensure power cable is securely connected. |
| No sound output | Volume too low; Incorrect input selected; Device not paired (Bluetooth) | Increase volume; Check input connections; Re-pair Bluetooth device. |
| Bluetooth connection unstable | Device too far; Interference | Move device closer to speaker; Avoid obstacles or other wireless devices. |
| Distorted sound | Volume too high; Input signal too strong | Reduce volume on speaker or source device; Adjust input gain. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | DB200ST1-072A |
| Output Wattage | 180 Watts |
| Item Weight | 13.29 Pounds |
| Product Dimensions (L x W x H) | 10.63 x 11.42 x 15.35 inches |
| Power Source | Battery Powered, Plug-in Powered |
| Battery Type | 1800 mAh Lithium Ion (included) |
| Battery Life | Up to 6 hours (max volume), 12 hours (half volume) |
| Connectivity Technology | Bluetooth, USB, Wireless |
| Bluetooth Range | Up to 33+ ft |
| Number of Channels | 3 |
| Audio Inputs | 1/4'' Microphones, Instruments, 1/8'' AUX, Line Inputs, Dual XLR, USB Input |
| Frequency Response | 20-4000 Hz |
| Impedance | 8 Ohm |
| Material | Acrylonitrile Butadiene Styrene (ABS), Steel |
| Mounting Type | Floor Standing, Pole mount |
8. Warranty and Support
For warranty information and customer support, please refer to the contact details provided with your purchase or visit the official NBVOICE website. Keep your proof of purchase for any warranty claims.