Digital Audio Processor User Manual

1. Instructions

Please be sure to read all the contents of the user manual before using this product. This manual relates to the safety of the device and protection against damage from improper operation.

2. Safety Information

Please read the following notes carefully and install the product as required to avoid loss.

WARNING: This device is for indoor installation or use in a cabinet. It shall not be sprayed by liquid, and liquid objects shall not be placed on the device. Do not allow liquid to spill into any part of the device.

WARNING: Unplug the power cable of the device during lightning weather.

WARNING: When not using the device for a long time, pay attention to moisture-proofing. It is recommended that the device be powered up for 3 hours a week.

Warning:

• Power supply: 100V ~ 240V.
• Power cord protection: Properly wiring, avoid trampling or heavy objects squeezing the cord.
• Maintenance: All repairs must be carried out by certified maintenance personnel. Do not attempt to open the device to avoid the danger of electric shock.
• Vent: The devices have air vents or holes in their shells to prevent overheating of sensitive components. Do not block the vents with anything.

Power Related Contents:

• Please make sure that the plug is tightly plugged and the cable is tightly connected, otherwise it may cause failure.
• Do not use a loose power socket or a damaged power cord, otherwise it may cause electric shock or fire.
• Do not touch the plug with wet hands under any circumstances, otherwise there is a danger of electric shock.
• Do not plug multiple devices into one socket, otherwise it may cause fire.
• Do not place heavy objects on the power cord to prevent bending, pulling, or winding of the power cord.

Additional safety information:

• Users must read and understand all safety and usage instructions before using the device.
• Users should keep the user manual for future use.

3. Product Introduction

This section is listed in the table of contents but no specific details are provided in the OCR'd pages.

4. Technical Specifications

5. Front Panel

Description of the front panel of the Digital Audio Processor:

The front panel features an LCD screen and several controls. The numbered controls are:

• 1: LCD Screen: Displays information such as ARM version, Control IP address, Location description, Custom properties, and Electric running time.
• 2: Gain: Adjusts audio gain.
• 3: Gate: Controls the noise gate function.
• 4: Xover: Manages crossover settings.
• 5: Matrix Limiter All Mute: Controls matrix mixing, limiting, and system mute functions.

Additional functions accessible via the interface include:

• Audio Function: Gain, Gate, Xover, PEQ, Delay, Matrix, Limiter, All Mute, Setup, Copy, Save, Recall.
• DataWheel: Used for data alignment.
• Input Level Indicator Light: Illuminates when the input signal exceeds -40dBu, indicating audio input. Includes auxiliary button and mute switch.
• Output Level Indicator Light: Illuminates when the output signal exceeds -40dBu, indicating audio output. Includes auxiliary button and mute switch.

6. Rear Panel

Description of the rear panel of the Digital Audio Processor:

The rear panel provides various connection interfaces:

• 1. Power Switch: Controls the power to the unit.
• 2. AC In: Supports 100V~240V AC voltage. Use the standard power cable and a grounded power outlet.
• 3. RS-232 Interface: Used to connect to third-party central control systems.
• 4. Ethernet Interface: Connects to a switch using standard Ethernet networks or directly to a laptop.
• 5. Audio Input Interface: Channel 1~4: Standard XLRF input, balanced audio input interface.
• 6. Audio Output Interface: Channel 1~8: Standard XLRM output, balanced audio output interface.

7. Software Running Environment

Operating system requirements: Windows XP, Windows 7 32Bit, Windows 7 64Bit.

Storage space occupation: 50MB.

Network environment: 100m LAN or wireless router.

8. Software Connection

Connect the processor's network cable to the same switch as the computer. Turn on the processor's power. This digital audio processor uses an auto-discovery protocol. When the software is turned on, it can detect all processors within the LAN.

If the device list page cannot find the processor after opening the software, close the Windows firewall.

9. Password Login

Enter the password for operation when the processor is connected. This allows authorized personnel to control the processor parameters.

The factory default user password is: admin.

A screenshot shows a 'DSP Login' dialog box with fields for 'Password' and 'OK/Cancel' buttons.

10. Home Screen

The home screen displays the online processor IP address on the current network and the history connection IP address. When there are multiple processors on the network, double-click the IP address on the left to control the switch.

Device list: Displays online processor IP addresses and history connection IP addresses. History IP addresses can be cleared.

Input level meter: Shows each input's volume, compression level, noise gate, and mute status.

Output level meter: Shows each output's volume, compression level, noise gate, and mute status.

Functional interface: Includes controls for Level, Gate, Limiter, Delay, MatrixMixer, PEQ, Signal, Preset, Settings, and Security.

A screenshot shows the main software interface with multiple channel strips, each having faders and controls for various audio functions. It also shows a list of connected devices with IP addresses.

11. Home Screen Menu

The Home Screen Menu provides access to various functions:

• 11.1 Update ARM Firmware: When the system function is upgraded, the ARM firmware needs to be upgraded. Click 'Update ARM Firmware' in the menu to open a dialog box. Select the firmware file (with .sbin suffix), click OK to start the upgrade progress bar. The upgrade takes approximately 25 seconds, after which the device will restart automatically.
• 11.2 Update DSP Firmware: When the DSP function is upgraded, the DSP firmware needs to be upgraded. Click 'Update DSP Firmware' in the menu to open a dialog box. Select the firmware file (with .ldr suffix), click OK to start the upgrade progress bar. The upgrade takes approximately 10 seconds, after which the device will restart automatically.
• 11.3 Modify Login Password: Enter the new password twice and click OK.
• 11.4 Modify Lock Password: The default lock password is 'ad123'. Enter the old lock password, then enter the new password twice, and click OK. This password can be used to hide, encrypt, and lock debugging data.
• 11.5 Reset: Clicking OK will restore the factory default settings and delete all user data. A warning dialog prompts for confirmation.
• 11.6 Device list: Displays online processor IP addresses and history connection IP addresses. Each processor on the network must be on the same network segment with a different IP address. Each processor requires individual password entry. Click the IP address on the left side of the software interface to switch the processor.

Screenshots illustrate the menu options, file selection dialogs for firmware updates, and the password modification dialog.

12. System Mute

In the home screen, there is a Mute button. Clicking this button mutes the system. The shortcut key 'Ctrl + M' can also be used for quick operation.

A screenshot shows the software interface with a 'Mute' button and device status information.

13. Input Level

The input volume is adjustable in 0.1dBu steps. Marshalling can be done into 2 volume groups. Pushing any of the volume faders after marshalling will push the grouped volume faders simultaneously.

A graphical representation shows input channels with faders, gain levels (e.g., 5.9 dBu, -25.3 dBu), mute buttons, and invert options. Channels can be grouped.

14. Noise Gate

This section is listed in the table of contents but no specific details are provided in the OCR'd pages.

15. Feedback Suppressor

This section is listed in the table of contents but no specific details are provided in the OCR'd pages.

16. Input Filter

This processor supports independent filters and 16-band PEQ for each channel. The input filter includes various professional audio filtering modules: high pass, low pass, PEQ, LowShelf, and HighShelf. Filter parameters can be copied and pasted quickly, improving operation efficiency.

A graphical interface shows an EQ curve with adjustable points across frequency bands. Controls for High-Pass and Low-Pass filters are shown, including Type, Slope, Frequency, Gain, and Q settings. Options like 'Enable', 'Reset', and 'Copy to' are available.

HPF/LPF support the following specifications:

17. Input Limiter

This processor supports independent input pressure limiters for each channel. Starting threshold, compression ratio, startup time, and recovery time can be adjusted. Limiter parameters can be copied and pasted quickly, improving operation efficiency.

A graphical interface displays input and output level meters, along with controls for Threshold (dBu), Ratio, Attack (ms), and Decay (ms).

18. Matrix Mixer

Matrix mixing supports arbitrary crossover remixing and can also be used for parametric remixes by remix values.

An interface shows a matrix for routing audio signals between different inputs (Mixer 1, Mixer 2, Mic 1, Mic 2) and outputs (Speaker 1-5, Subwoofer 1, Out Channel 7-8), with gain controls for each connection.

19. Signal Generator

This section is listed in the table of contents but no specific details are provided in the OCR'd pages.

20. Output Level

This section is listed in the table of contents but no specific details are provided in the OCR'd pages.

21. Output Filter

This processor supports independent filters and 16-band PEQ for each channel. The output filter includes various professional audio filtering modules: high pass, low pass, PEQ, LowShelf, and HighShelf. Filter parameters can be copied and pasted quickly, improving operation efficiency.

A graphical interface shows an EQ curve for output channels with adjustable points. Controls for High-Pass and Low-Pass filters are shown, including Type, Slope, Frequency, Gain, and Q settings. Options like 'Enable', 'Reset', and 'Copy to' are available.

HPF/LPF support the following specifications:

22. Output Limiter

This processor supports independent output pressure limiters for each channel. Starting threshold, compression ratio, startup time, and recovery time can be adjusted. Limiter parameters can be copied and pasted quickly, improving operation efficiency.

A graphical interface displays input and output level meters, along with controls for Threshold (dBu), Ratio, Attack (ms), and Decay (ms).

23. Output Delay

This section describes how to set delay times for output channels. For example, to ensure sound from two distant speakers reaches the same point simultaneously, a delay can be applied.

An interface shows output channels (1-8) with fields to set delay times in Millisecond, Meters, and Feet, along with up/down controls for adjustment.

24. Preset

This processor can store up to 32 modes, each with a customizable English name. Preset names can be displayed under each IP address. The processor automatically uses the preset before shutdown. Preset parameters support data import and export functions.

A table lists preset slots (1-11 shown) with columns for Name, Save, Recall, Import, Export, and Delete. Below the table, two connected devices are shown with their IP addresses and current preset names ('default').

25. Settings

In the settings page, input and output channels can be labeled for management. You can also view device firmware version and other information.

Input Label Management: Fields for Input 1 through Input 4 allow custom labeling (e.g., 'In Channel 1').

Output Label Management: Fields for Output 1 through Output 8 allow custom labeling (e.g., 'Out Channel 1').

Device Information:

26. Security

The default lock password is: ad123. Enter the password to lock the function settings for each channel.

A grid interface displays security settings for various functions (InLevel, Gate, Feedback, etc.) across multiple channels. A legend indicates states like 'Free', 'Read-only', and 'Hidden' represented by different icons/colors.

27. Common Troubleshooting

27.1 Unable to find the processor

Connect the device to the computer via a network cable on the same switch. The default IP address is 192.168.1.128.

1. Wired connection:

1. Check your computer's local connection network segment.
2. Run the processor software, right-click the green dot on the left side of the home screen, and set the IP address.
3. The first three numbers of the device's IP address must match the computer's local IP address. The last number can be changed to 1-255, but it must be different from the computer's IP address.

Screenshots show Windows network connection details, highlighting IP address information, and the software interface for setting IP addresses.

2. Wireless connection:

1. A wireless router is required. Connect the device to the wireless router using a network cable to any LAN port. Then connect to Wi-Fi. Check your computer's wireless network segment.
2. Run the processor software, right-click the green dot on the left side of the home screen, and set the IP address.
3. The first three numbers of the device's IP address must match the computer's local IP address. The last number can be changed to 1-255, but it must be different from the computer's IP address.

Screenshots show Windows wireless network connection details and the software interface for setting IP addresses.

27.2 Failed to make connection

If the IP address on the left side of the home screen has a green dot, click it without a password dialog. In most cases, there is an IP address conflict. You must modify the IP address to resolve the problem.

28. Login failure

If the login password or lock password is lost, please contact the supplier. The supplier can assist with a host reset, which will clear all data, requiring you to reset the system.