1. Introduction
This manual provides essential instructions for the setup, operation, maintenance, and troubleshooting of your NUX NPK-20 Portable Digital Piano. Please read this manual thoroughly before using the instrument to ensure proper function and longevity.
Figure 1.1: NUX NPK-20 Portable Digital Piano with included accessories.
Package Contents:
- NUX NPK-20 Portable Digital Piano
- True Fidelity Foldable Noise Canceling Headphones
- Damper Pedal
- Music Stand
- Power Adapter
- User Manual (this document)
2. Setup
Follow these steps to set up your NPK-20 Digital Piano.
2.1 Unpacking and Placement
- Carefully remove all components from the packaging.
- Place the NPK-20 on a stable, flat surface. Ensure adequate ventilation around the instrument.
- Attach the included music stand to the designated slot on the piano.
2.2 Power Connection
- Connect the power adapter to the DC IN jack on the rear panel of the NPK-20.
- Plug the power adapter into a standard electrical outlet.
Figure 2.1: Rear panel connections of the NPK-20.
2.3 Pedal and Headphone Connections
- Connect the included damper pedal to the DAMPER PEDAL jack on the rear panel.
- For private practice, connect the True Fidelity Foldable Noise Canceling Headphones to one of the two headphone jacks (3.5mm or 6.35mm) on the front left side of the piano.
Figure 2.2: Included True Fidelity Foldable Noise Canceling Headphones.
2.4 External Device Connections
- USB MIDI: Connect a USB cable from the NPK-20's USB MIDI port to your computer for MIDI data transmission.
- Aux In: Use the Aux In jack to connect an external audio player and play along with your favorite music.
- Line Out: Use the Line Out (L/MONO, R) jacks to connect the NPK-20 to an external amplifier, mixer, or recording device.
3. Operating Instructions
This section details the primary functions and features of the NPK-20.
3.1 Power On/Off
Press the Power button located on the control panel to turn the instrument on or off.
3.2 Key Features and Touch Sensitivity
The NPK-20 features WKJ-03 Triple-sensor scaled hammer-action weighted keys, designed to replicate the feel of an acoustic grand piano. You can adjust the touch sensitivity to 5 different levels to suit your playing style.
Figure 3.1: WKJ-03 Triple-Sensor Graded Hammer-Action Weighted Keyboard mechanism.
3.3 Sound Selection and Effects
The NPK-20 offers 271 high-quality sounds. Use the control panel and LCD display to browse and select sounds. The instrument also includes various effects:
- Reverb: 4 types (Hall, Plate, Room, Studio)
- Compressor: 4 types (Soft, R&B, Lyric Piano, Standard Piano)
- Chorus: 4-parameter adjustment
- Delay: 4-parameter adjustment
- EQ: Built-in 9-band equalizer for custom sound shaping.
Figure 3.2: NPK-20 display showing professional sound features and effects.
3.4 Advanced Functions
- Looping: Record and loop your playing to create layered performances.
- Drum Machine: Utilize the NPK-20 as a drum machine for rhythmic accompaniment.
- Microphone Input: Connect a microphone to the MIC input and adjust gain for singing or vocal performance.
- Transpose: Shift the pitch of the entire keyboard.
- Split Keyboard: Divide the keyboard into two sections, each with individual octave shift, allowing two different sounds or ranges to be played simultaneously.
3.5 Bluetooth Connectivity
The NPK-20 supports Bluetooth for both audio streaming and MIDI communication.
- Bluetooth Audio: Pair your smartphone or tablet to stream audio through the NPK-20's speakers or connected headphones.
- Bluetooth MIDI: Connect wirelessly to MIDI applications on compatible devices for expanded control and recording capabilities.
4. Maintenance
Proper maintenance ensures the longevity and optimal performance of your NPK-20.
4.1 Cleaning
- Wipe the surface of the piano with a soft, dry cloth.
- For stubborn dirt, use a slightly damp cloth and then dry thoroughly.
- Do not use abrasive cleaners, solvents, or waxes, as these can damage the finish.
4.2 Storage
- Store the instrument in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid placing heavy objects on the piano.
5. Troubleshooting
If you encounter issues with your NPK-20, refer to the following common problems and solutions.
- No Sound:
- Ensure the power is on and the volume is turned up.
- Check headphone connections if using headphones.
- Verify external amplifier/speaker connections if using Line Out.
- Bluetooth Connectivity Issues:
- Ensure Bluetooth is enabled on both the NPK-20 and your external device.
- Make sure the devices are within range.
- Try unpairing and re-pairing the devices.
- Keys Not Responding:
- Restart the instrument.
- Ensure no foreign objects are lodged between the keys.
If the problem persists, please contact customer support.
6. Specifications
Figure 6.1: NPK-20 Digital Piano dimensions.
| Feature | Description |
|---|---|
| Model | NPK-20 |
| Keys | 88, WKJ-03 Triple-sensor scaled hammer-action weighted keys |
| Touch Sensitivity | 5 levels |
| Sounds | 271 high-quality sounds |
| Effects | 4 Reverb types, 4 Compressor types, 4-parameter Chorus, 4-parameter Delay |
| Equalizer | 9-band EQ |
| Connectivity | Bluetooth (Audio & MIDI), USB MIDI, Aux In, Line Out (L/MONO, R), 2 Headphone jacks (3.5mm, 6.35mm), Damper pedal jack, Pedal-unit jack |
| Power Source | Corded Electric (12V, 24W) |
| Dimensions (W x D x H) | 51.2 x 10.63 x 5.1 inches (130 x 27 x 13 cm) |
| Weight | Not specified in provided data |
| Material | Plastic |
| Color | Black |
| Included Headphones | True Fidelity Foldable Noise Canceling Headphones |
| UPC | 810143434699 |
7. Warranty and Support
7.1 Warranty Information
Your NUX NPK-20 Portable Digital Piano is covered by a manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration. Retain your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact NUX customer support. Visit the official NUX website for contact information and additional resources.
