Sennuopu X680 Plus 8-Channel DSP Automotive Sound Amplifier User Manual

1. Product Overview

The Sennuopu X680 Plus is a versatile 6-channel amplifier with an integrated 8-channel Digital Signal Processor (DSP), designed to deliver high-resolution audio in automotive sound systems. It features a built-in 6*110 Watts power amplifier, capable of driving high-dynamic 2-way speakers, with the option to bridge channels 5 and 6 to power a 450 Watts bass speaker. The 8-channel DSP allows for individual adjustment of each channel, providing precise control over your car's audio environment.

Image: Sennuopu X680 Plus DSP Amplifier and Remote Control

2. Package Contents

Before installation, please verify that all items are present in the package:

• Sennuopu X680 Plus DSP Amplifier
• Remote Controller
• Power Cable Harness
• USB Cable
• Bluetooth Antenna
• Mounting Brackets and Screws
• User Manual (this document)

Image: Sennuopu X680 Plus Package Contents

3. Setup and Installation

3.1 Physical Installation

The X680 Plus amplifier has dimensions of 265mm x 200mm x 48mm. Ensure adequate space and ventilation for proper installation. Use the provided mounting brackets and screws to secure the amplifier in a suitable location within your vehicle.

Image: Sennuopu X680 Plus Dimensions

3.2 Wiring Connections

Refer to the diagrams below for proper wiring of the X680 Plus. Ensure all connections are secure to prevent damage and ensure optimal performance.

Power Supply Connections

Connect the 12V power supply, earthing switch, and CH5/CH6 output as indicated on the rear panel. The unit uses a pair of 25A fuses for protection.

Image: Rear Panel Connections of the X680 Amplifier

Image: Power Cable Harness Pin Definition. This diagram shows the pinout for the power cable harness, including +12V, GND, ACC, REMO, and speaker line inputs/outputs.

Audio Input Connections

The X680 Plus supports various audio input methods:

• Bluetooth Input: Connect wirelessly via Bluetooth 5.1.
• USB Input: For U-disk playback (supports FLAC, APE, MP3, WAV, AAC, WMA) and USB audio from other multimedia devices.
• OTG Input: Connect compatible devices via OTG.
• Optical Input: For high-quality digital audio, providing electrical isolation to prevent digital noise.
• Low-level Input (RCA): Connect via RCA cables.
• High-level Input: Connect directly from the head unit's speaker outputs.

Image: Audio Input Options for X680 (Bluetooth, USB, OTG, Optical, Low-level, High-level)

Image: Detailed Audio Input Diagram with Bluetooth, USB, and Optical

Speaker Connections

The X680 Plus is a 6-channel amplifier. Channels 1-4 are typically used for front (FF), front right (FR), rear left (RF), and rear right (RR) speakers. Channels 5 and 6 can be bridged to drive a passive subwoofer.

Image: Speaker and Subwoofer Connection Diagram with X680. This diagram illustrates connecting front and rear speakers to CH1-CH4, and a subwoofer to bridged CH5/CH6.

Image: Detailed Wiring Diagram for X680 with Head Unit, Power, and Speakers. This diagram shows connections from the head unit, power supply, and various speakers (CH1-CH8) to the X680.

3.3 DSP Software Installation

The DSP settings and adjustments are made using a Windows PC via USB or an Android application. Follow these steps to download the tuning software:

1. Open a Google browser on your device.
2. Click the search box, then locate and click the QR code icon.
3. Scan the QR code provided below.
4. At the bottom of the page, click 'download'.

Image: QR Codes for DSP Tuning Software Download (Android App, WeChat, Windows PC)

Image: Steps to Download Tuning Software via QR Code Scan

Note: The Android APP only supports Android phones with systems higher than 9.0. iPhone is not supported.

4. Operating Instructions

4.1 Audio Media Player Functions

The X680 Plus functions as a high-quality audio media player:

• U-disk Playback: Supports multiple music formats including FLAC, APE, MP3, WAV, AAC, WMA.
• USB Audio Input: Allows expansion with various multimedia playback devices. USB format support includes FAT16/32, NTFS.
• Optical Input: Achieves electrical isolation and prevents digital noise transmission through the ground wire, improving the Signal-to-Noise Ratio (S/N) of the DAC.
• Bluetooth 5.1: For high-definition audio streaming.
• LED Remote Controller: Use the provided remote for convenient control.
• Android Head Unit Control: Download the dedicated APP to control playback from your Android head unit.

Image: Bluetooth Audio Quality Comparison (CD Standard vs Hi-Res). This diagram illustrates the difference in sampling rate and bit rate between CD standard and Hi-Res audio sources.

4.2 Digital Signal Processor (DSP) Functions

The 8-channel DSP allows for advanced audio tuning:

• Processor: 8-channel OMAP 2 x 456 MHz, 32 Bit (up to 64-bit/IEEE double precision) digital processor.
• Equalizer: 31-band EQ with fine tuning, adjustable from 20-20 KHz.
• Filters: Adjustable high-, low-, and band-pass filters with selectable filter slopes (6, 12, 18, 24, 30, 36, 42, 48 dB/octave). Supports Butterworth, Bessel, and Linkwitz-Riley characteristics.
• Delay: Adjustable from 0-20 milliseconds (0-273 inches).
• Phase Adjustment: 0 or 180°.
• Tuning Software: DSP settings and adjustments are made using the Windows PC software via USB or the Android APP.

Image: DSP Tuning Software Interface on a PC. This screenshot shows the graphical user interface for adjusting equalizer, crossover, and delay settings.

5. Maintenance

To ensure the longevity and optimal performance of your Sennuopu X680 Plus DSP amplifier, follow these maintenance guidelines:

• Keep the unit clean and free from dust. Use a soft, dry cloth for cleaning.
• Ensure proper ventilation around the amplifier to prevent overheating.
• Avoid exposing the unit to extreme temperatures, moisture, or direct sunlight.
• Regularly check all wiring connections for tightness and signs of wear.
• Do not attempt to open the casing or perform repairs yourself, as this may void the warranty.

6. Troubleshooting

If you encounter any issues with your X680 Plus, refer to the following basic troubleshooting steps:

• No Power: Check the power connections, fuses, and ensure the vehicle's battery is adequately charged. Verify the start switch selection is correct.
• No Sound: Check all audio input and speaker output connections. Ensure the volume is not muted on the remote, head unit, or DSP software. Verify correct input source selection.
• Distorted Sound: Check speaker wiring for shorts or incorrect polarity. Reduce gain settings in the DSP software. Ensure the input signal is not overdriven.
• Bluetooth Connectivity Issues: Ensure the Bluetooth antenna is securely connected. Check that the device is within range and not connected to another Bluetooth device. Restart both the X680 Plus and your Bluetooth device.
• DSP Software Connection Issues: Ensure the USB cable is properly connected to both the amplifier and the PC. Verify that the correct drivers are installed on your PC.

For persistent issues, please contact customer support.

7. Specifications

8. Warranty and Support

8.1 Warranty Policy

The Sennuopu X680 Plus comes with a 1-year warranty from the date of receipt. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by accident, misuse, unauthorized modification, or improper installation.

If the item requires repair within 1 year of receipt due to a covered issue, you may send it for servicing. Shipping costs for repairs are the responsibility of the buyer.

8.2 Customer Support

For any questions, technical assistance, or support regarding your Sennuopu X680 Plus, please contact our customer service team. We are committed to helping you resolve any issues promptly.

9. User Tips

No specific user tips were available from reviews or Q&A content for this product at this time. However, general tips for car audio DSP amplifiers include:

• Professional Installation: While the unit supports plug-and-play, professional installation is recommended for optimal sound quality and to avoid wiring errors.
• DSP Tuning: Take your time with the DSP tuning software. Small adjustments can make a big difference. Consider consulting car audio forums or professionals for advanced tuning techniques.
• Speaker Matching: Ensure your speakers are well-matched to the amplifier's power output for the best performance and to prevent damage.
• Power Supply: A stable and sufficient power supply is crucial for amplifier performance. Ensure your vehicle's electrical system can handle the power requirements.