AXTON A894DSP 8.1 Channel DSP Amplifier User Manual

1. Introduction

The AXTON A894DSP is a compact 8.1 channel SMART DSP amplifier designed to enhance your vehicle's audio system. It offers advanced digital sound processing capabilities, flexible input/output configurations, and convenient control via a smartphone application. This manual provides essential information for the proper installation, operation, and maintenance of your A894DSP amplifier.

Image 1.1: Top view of the AXTON A894DSP amplifier, showcasing its sleek, compact design with the AXTON logo and model number.

2. Safety Information

Please read all safety instructions carefully before installing and operating the A894DSP amplifier. Failure to follow these guidelines may result in injury or damage to the product or vehicle.

• Professional Installation Recommended: Installation should ideally be performed by qualified personnel to ensure correct wiring and optimal performance.
• Power Disconnection: Always disconnect the vehicle's battery before starting any installation or wiring work to prevent electrical shock or short circuits.
• Proper Ventilation: Ensure the amplifier is installed in a location with adequate airflow to prevent overheating. Do not cover the cooling fins.
• Secure Mounting: Mount the amplifier securely to prevent it from moving during vehicle operation, which could cause damage or injury.
• Wiring: Use appropriate gauge wiring for power, ground, and speaker connections. Ensure all connections are secure and properly insulated.
• Water and Moisture: Do not expose the amplifier to water or excessive moisture.
• Operating Temperature: Avoid operating the amplifier in extreme temperatures outside its specified range.

3. Package Contents

Verify that all items are present in the package before proceeding with installation:

• AXTON A894DSP Amplifier Unit
• 24-pin Main Connection Cable
• 8-pin Connection Cable for 8.0 Mode
• 8-pin Connection Cable for 6.1 Mode
• 8-pin Connection Cable for 4.2 Mode
• 8-pin Connection Cable for 4.1 Mode
• User Manual (this document)

4. Product Overview

The A894DSP is a versatile 8.1 channel amplifier with an integrated Digital Sound Processor (DSP). It is designed to integrate seamlessly with various factory and aftermarket car audio systems, offering extensive sound customization and powerful output.

Key Features:

• 8.1 Channel Amplifier with Integrated DSP
• Six High-Level Inputs for OEM System Integration
• Flexible Input/Output Channel Routing
• Smartphone App Control (iOS & Android) for DSP Settings
• Bluetooth Audio Streaming
• Support for Hi-Res Audio (with optional ABT50 interface)
• Optical Input/Output for Daisy-Chaining Multiple DSPs
• Multiple Bridge-Tied Load (BTL) Output Modes (8.0, 6.1, 4.2, 4.1)
• Advanced DSP Functions: Time Correction, Crossovers, 31-Band Parametric EQ, Gain Control

Image 4.1: Rear view of the AXTON A894DSP, showing various input and output connections including RCA, optical, coaxial, USB, and control ports.

5. Setup & Installation

Proper installation is crucial for the performance and longevity of your A894DSP amplifier. Follow these steps carefully.

5.1 Mounting the Amplifier

• Choose a dry, well-ventilated location in your vehicle, away from direct sunlight or heat sources.
• Ensure sufficient space around the amplifier for airflow, especially around the cooling fins.
• Use the provided mounting hardware to securely fasten the amplifier to a solid surface.

5.2 Wiring Connections

The A894DSP supports various connection methods. Always ensure the vehicle's battery is disconnected before making any electrical connections.

• Power and Ground: Connect the 24-pin main connection cable to the amplifier. Ensure proper power (+12V) and ground connections to the vehicle's electrical system.
• High-Level Inputs: For integration with factory head units, connect the vehicle's speaker outputs to the amplifier's high-level inputs using the appropriate cables. The A894DSP features six high-level inputs.
• Optional Plug & Play Cables: For specific vehicle models, optional Plug & Play cables are available to simplify connection to OEM audio systems. These cables often include pre-configured settings within the AXTON app.
• Speaker Outputs: Connect your speakers to the amplifier's output channels. The A894DSP supports various configurations (8.0, 6.1, 4.2, 4.1 BTL modes). Refer to the specific connection cable for your desired mode.
• RCA Outputs: The dual mono RCA output allows connection to a separate subwoofer amplifier or central amplifier.
• Optical Input/Output: Use the optical ports to link multiple AXTON DSP amplifiers for expanded system configurations without signal loss.
• Optional Accessories:
  • ABT50 Streaming Interface (ASIN B08LPNTHKQ): Connect this separately sold interface for Hi-Res audio streaming capabilities.
  • Remote Control (ASIN B08MFFSZ7L): Connect a separately sold remote control for convenient adjustment of basic functions.

Image 5.1: Angled view of the AXTON A894DSP, highlighting the robust cooling fins and the array of connection ports on the rear panel.

6. Operation

The AXTON A894DSP is primarily controlled and configured via a dedicated smartphone application.

6.1 Smartphone App Control

• Download the free AXTON smartphone app from the iOS App Store or Google Play Store.
• Ensure your smartphone's Bluetooth is enabled and pair it with the A894DSP amplifier.
• All DSP parameter functions are accessible and adjustable through this application.

Image 6.1: The AXTON A894DSP amplifier shown with a smartphone displaying the control application interface, illustrating the ease of digital sound processing adjustments.

6.2 Digital Sound Processor (DSP) Functions

The integrated DSP offers extensive sound customization options per channel:

• Time Correction: Adjust the sound arrival time for each speaker to create a precise sound stage.
• Frequency Filters (Crossovers): Freely configure high-pass, low-pass, and band-pass filters with slopes of 6/12/18/24 dB per octave. Selectable characteristics include Butterworth, Bessel, and Linkwitz-Riley.
• Gain Control: Adjust the output level for each channel independently.
• 31-Band Parametric Equalizer: Fine-tune the frequency response for each channel to achieve desired tonal balance.
• Channel Routing: Flexibly distribute, split, or merge input signals to output channels.
• Input Equalizer: Linearize the music signal from the input source.
• Dynamic Bass & Treble: Enhance low and high frequencies dynamically.

Image 6.2: Detailed screenshots of the AXTON DSP smartphone application, illustrating various adjustment screens such as the 31-band equalizer, channel routing, crossover settings, and time alignment.

6.3 Audio Streaming

• Bluetooth Audio Streaming: Stream music directly from your smartphone or other Bluetooth-enabled devices to the amplifier.
• Hi-Res Audio: With the optional ABT50 streaming interface, the A894DSP can play high-resolution audio data for superior sound quality.

7. Specifications

8. Troubleshooting

If you encounter issues with your A894DSP amplifier, refer to the following common problems and solutions:

• No Power:
  • Check all power and ground connections. Ensure they are secure and properly wired.
  • Verify the vehicle's battery voltage.
  • Check for blown fuses in the power line or on the amplifier itself.
• No Sound:
  • Ensure all input and output cables are correctly connected.
  • Check speaker connections for proper polarity and shorts.
  • Verify the input source (head unit, Bluetooth device) is playing audio and its volume is up.
  • Check DSP settings in the app, particularly gain levels, mute functions, and channel routing.
• Distorted Sound:
  • Reduce the gain settings in the DSP app.
  • Check for proper impedance matching between the amplifier and speakers.
  • Ensure the input signal is not overdriven.
  • Inspect speaker cones for damage.
• Bluetooth Connection Issues:
  • Ensure the amplifier is powered on and in pairing mode (if applicable).
  • Delete previous pairings on your smartphone and try reconnecting.
  • Ensure your smartphone is within range of the amplifier.
• App Not Connecting to Amplifier:
  • Ensure Bluetooth is enabled on your smartphone and the amplifier.
  • Restart the app and the amplifier.
  • Check for app updates.

If the problem persists after attempting these solutions, please contact AXTON customer support.

9. Warranty & Support

AXTON products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your product or visit the official AXTON website. Keep your proof of purchase for warranty claims.

For technical support, product inquiries, or service, please contact your authorized AXTON dealer or visit the AXTON support website. Contact information can typically be found on the manufacturer's website or in the product packaging.