1. Introduction
The Navifly 4470A Stereo DSP Amplifier is a universal digital audio processor designed to significantly enhance your car's audio system. It provides 4*80W output, advanced sound field positioning, and comprehensive equalization adjustments to restore and improve music details, especially compensating for bass deficiencies in original car audio setups. This amplifier supports various input methods including AUX, USB, optical fiber, and coaxial, along with wireless Bluetooth music playback and mobile APP control for precise sound tuning. It is suitable for 12V vehicles such as cars and SUVs.
2. Package Contents
Please check the package carefully to ensure all items are present:
- CAR DSP Amplifier (Model 4470A)
- Power Cord
- USB Cable
- User Manual (Instructions)
- Packing Box
3. Specifications
Technical specifications for the Navifly 4470A DSP Amplifier:
| Feature | Specification |
|---|---|
| Model Name | 4470A |
| Brand Name | navifly |
| Item Type | AMPLIFIERS |
| Output Power | 80W*4 |
| Signal To Noise Ratio | >70dB |
| Standard Distortion | 0.1% |
| Standby Current | 5mA |
| Voltage Range | 9-16V |
| Maximum Working Current | 25A |
| Item Weight | 0.73kg |
| Item Size (L*W*H) | 138*115*38MM |
| Audio Encoding | Stereo |
| Frequency Range (Hz) | 20Hz-20KHz |
| Certification | CE |
| Origin | Mainland China |
4. Features
The Navifly 4470A DSP Amplifier offers a range of features to enhance your in-car audio experience:
- DSP Adjustment: Supports advanced digital sound processing for precise audio tuning.
- Multiple Inputs: Includes AUX, optical fiber, and coaxial inputs for versatile connectivity.
- Wireless Music: Enjoy seamless audio streaming via Bluetooth.
- USB Playback: Direct playback of music from a U disk via USB connection.
- RCA Output: Provides RCA outputs for connecting to other audio components.
- APP Control: Full control and sound adjustment via a dedicated mobile application (iOS/Android).
- Sound Field Positioning: Advanced timing control to create an immersive surround sound experience.
- Lossless Audio Transmission: Ensures high-fidelity sound quality.
- Plug and Play Installation: Designed for easy, non-destructive installation without modifying original wiring.
- Universal Compatibility: Compatible with most 12V vehicles and Android radios.
5. Setup and Installation
The Navifly 4470A DSP Amplifier is designed for a "Plug and Play" installation, minimizing the need for complex wiring modifications.
5.1. General Installation Guidelines
- Use the standard 16PIN adapter cable for a direct connection.
- No wire cutting or breaking is required, ensuring a lossless installation.
- The amplifier is suitable for hidden installation, such as under the passenger seat or within the passenger compartment.
5.2. Interface Diagram and Connections
Refer to the diagram below for a detailed overview of the amplifier's interfaces and their functions:
- A: OP/Coa IN: Supports optical fiber and coaxial input.
- B: RCA OUT: Red right audio output.
- C: COAXIAL: Dedicated coaxial input.
- D: RCA OUT: White left audio output.
- E: CAR MEDIA: Main power interface for car media connection.
- F: DSP APP: Connects to the vehicle's central control host or a mobile phone for DSP debugging and control.
- G: AUX IN: Auxiliary input for external audio devices.
- H: USB: USB port for music playback from a U disk.
- I: POWER IN: Main power input for the amplifier.
Ensure all connections are secure and correctly matched to their respective ports. The 16-pin universal wire simplifies integration with your car's existing radio system.
6. Operating Instructions
Once installed, the Navifly 4470A DSP Amplifier offers several ways to enjoy your audio.
6.1. USB Music Playback
- Insert a U disk (USB flash drive) containing MP3 or other supported audio files into the USB port (H) on the amplifier.
- The amplifier will decode and play the audio directly from the U disk.
6.2. AUX Input
- Connect your mobile phone, portable audio player, or other external audio devices to the AUX IN port (G) using an appropriate audio cable.
- The amplifier will process the audio signal through its DSP for improved sound quality.
6.3. Wireless Bluetooth Music
- Ensure your mobile device's Bluetooth is enabled.
- Pair your device with the Navifly 4470A amplifier (refer to your car radio's or mobile app's instructions for pairing).
- Once paired, you can stream music wirelessly from your device to the amplifier.
6.4. Optical Fiber and Coaxial Input
- For high-fidelity digital audio sources, connect them to the OP/Coa IN (A) or COAXIAL (C) ports.
- These inputs provide superior sound quality for compatible devices.
7. DSP Equalizer Adjustment
The Navifly 4470A features a powerful Digital Sound Processor (DSP) that allows for extensive audio customization. This is where you can fine-tune your sound to perfection.
7.1. Accessing DSP Adjustments
- Mobile APP Control: Download the dedicated Navifly APP (available for iOS and Android) to your smartphone. Connect your phone to the amplifier via Bluetooth or the DSP APP port (F) if applicable. The app provides a user-friendly interface for all DSP functions.
- Computer Tuning: For more advanced users, the amplifier supports computer-based tuning. Connect the amplifier to a computer (details on software and connection method may be provided in the APP or on the manufacturer's website).
7.2. Key DSP Functions
- Equalizer (EQ) Adjustment: Fine-tune frequency bands to achieve your desired sound profile. This includes adjusting strong treble, comfortable midrange, and gentle bass.
- Delay Adjustment: Correct timing differences for each speaker to ensure sound reaches the listener's ears simultaneously, creating a precise sound stage and enhancing stereo feeling.
- Mono Adjustment: Adjust individual channel settings.
- Mixing Functions: Advanced audio mixing capabilities.
- Sound Field Positioning: By controlling the timing of sound played by each car speaker, the amplifier creates a sense of surround sound, making the listening experience more immersive.
Proper DSP adjustment can dramatically improve your car's audio quality, transforming a noisy and unclear sound into a rich and clear listening experience.
8. User Tips
- Pinout Reference: For installation, always refer to the detailed interface diagram (Figure 5.3) and the provided 16-pin universal wire for correct connections. If you require further pinout details, consult the official Navifly support resources.
- Initial Sound Tuning: Start with subtle DSP adjustments and gradually fine-tune to your preference. Over-adjusting can sometimes lead to an unnatural sound.
- App Updates: Keep the mobile control app updated to ensure access to the latest features and performance improvements.
- Power Source: Ensure a stable 9-16V power supply to the amplifier for optimal performance and to prevent damage.
9. Maintenance
To ensure the longevity and optimal performance of your Navifly 4470A DSP Amplifier, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
- Ventilation: Ensure the amplifier is installed in a location with adequate ventilation to prevent overheating. Do not block the heat sinks.
- Connections: Periodically check all connections (power, audio inputs/outputs) to ensure they are secure and free from corrosion.
- Environmental Conditions: Avoid exposing the amplifier to extreme temperatures, direct sunlight, or excessive moisture.
10. Troubleshooting
If you encounter issues with your Navifly 4470A DSP Amplifier, refer to the following common troubleshooting steps:
- No Power:
- Check the power connections to ensure they are securely attached to a 9-16V power source.
- Verify the car's fuse box and the amplifier's internal fuse (if accessible and replaceable) are intact.
- No Sound Output:
- Ensure all audio input and output cables (RCA, AUX, optical, coaxial) are correctly connected.
- Check the volume levels on your car radio, connected device, and within the DSP app.
- Verify the correct input source is selected on your car radio or via the DSP app.
- Confirm that the speakers are properly wired and functioning.
- Distorted Sound:
- Reduce the volume level to see if distortion decreases.
- Check DSP equalizer settings for extreme adjustments. Reset to default if necessary and re-tune gradually.
- Ensure audio cables are not damaged or experiencing interference.
- Bluetooth Connectivity Issues:
- Ensure Bluetooth is enabled on both your device and the amplifier (via car radio or app).
- Unpair and re-pair the device.
- Move your device closer to the amplifier to rule out range issues.
- APP Control Not Working:
- Ensure your mobile device is properly connected to the amplifier (Bluetooth or DSP APP port).
- Check if the app is updated to the latest version.
- Restart the app and/or your mobile device.
If these steps do not resolve the issue, please contact customer support for further assistance.
11. Warranty and Support
Navifly products are manufactured to high-quality standards. For warranty information, please refer to the terms and conditions provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.
For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please contact Navifly customer service through their official website or the contact information provided with your purchase.
