WONDOM ADSP1701-2.4U User Manual

Product Overview

The WONDOM ADSP1701-2.4U is an unbalanced 2-channel input, 4-channel output digital signal processor featuring the Analog Device's high-performance ADAU1701 DSP chip. It offers a 28 or 56-bit digital processing engine, supports a 48 kHz sampling rate, and includes 24-bit resolution ADC and DAC with a high dynamic range of up to 98.5dB.

Key Features:

• 2-IN, 4-OUT with 2-way Digital Crossover.
• 4 Potentiometers, 2 Switches, and 2 LEDs for control and monitoring.
• Supports SigmaStudio Programming with open-sourced demo program and HEX file.
• Exquisite silkscreen design and comprehensive programming support.
• Aluminum housing with plug-N-play terminals.

Applications:

• Gaming
• Home Theater
• Audio DIY
• Musical Instrument
• Active DSP Crossover
• Customizable Active Bookshelf Speaker

Mechanical Drawing

Front View: Depicts the front panel layout with controls and indicators.

Top View: Shows the top of the unit.

Rear View: Illustrates the rear panel connections including Line Out (DAC3, DAC2, DAC1, DAC0), Line In, DC Input (5V, 1A), ICP Port, MP2/ADC1, and ADCO/ADC1.

Side View: Provides a side profile of the unit.

Silkscreen Naming Functionality: The empty space on the front panel can be used to label the potentiometers with their functional names using a marker or sticker.

Specifications

Block Diagram

The block diagram illustrates the internal connections and signal flow within the ADSP1701-2.4U. It shows the ADAU1701 Digital Audio Processor at the core, connected to power management (SGM2028 regulators), input (3.5mm RCA Input), output (3.5mm RCA Output), volume control ICs (PT2259), and potentiometers.

Unleashing the Capabilities of Digital Audio Processor IC Chipset (ADAU1701): The ADAU1701 is a single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and micro-controller-like control. It features two ADCs and four DACs, providing a 98.5 dB dynamic range. ADC THD + N is -83 dB, and DAC THD + N is -90 dB. It supports easy connections to additional ADCs and DACs via digital ports, and communication occurs through I2C® or 6-pin JST PH.

Note: LED in WONDOM ADSP ADAU1701 Platform: The LED color can be customized. The LED blinks while SigmaStudio is updating.

Note: Potentiometer and toggle switch function: Functionality is defined by SigmaStudio software.

Default Configuration

Front Panel Controls:

1. Power LED: Indicates when the device is powered ON.
2. BUSY LED: Controlled by MP7. Behavior depends on MP7's configuration (GPIO or I2S data input).
3. SW1 - Mute Control: Functions as a mute control. Set to 1 to mute, 0 to unmute. Corresponds to MPO/GPIO0.
4. SW2 - Phase Control: Functions as a phase control. Set to 1 for 180° phase, 0 for 0° phase. Corresponds to MP6/GPIO6.
5. POT1 - HPF of BANK B: Functions as the High-pass filter for the Mid-range output channel (BANK B). Adjustable frequency range: 3kHz to 20kHz.
6. POT2 - LPF of BANK A: Functions as the Low-pass filter for the Bass output channel (BANK A). Adjustable frequency range: 210Hz to 3kHz.
7. POT3 - HPF of BANK A: Functions as the High-pass filter for the Bass output channel (BANK A). Adjustable frequency range: 10Hz to 310Hz.
8. POT4 - Overall Volume: Functions as the Master volume control. Rotating clockwise increases volume; anticlockwise decreases it.

Rear Panel Connections:

1. 9. Power Supply: USB Type-C port for powering the unit (DC5V, 1A).
2. 10. POT5 - Relative Gain Control: Controls the relative gain between BANK A and BANK B outputs. Range: -60dB to 0dB. Clockwise rotation attenuates BANK B; anticlockwise attenuates BANK A. Functionality can be customized via SigmaStudio.
3. 11. ICP PORT: For connection with WONDOM ICP programmer to enable SigmaStudio programming. Includes pin definitions for SDA, SCL, WP, GND, +5V, and DSP RST.
4. 12. 2CH Audio Input: Supports 2CH analog input via RCA connectors (ADCO and ADC1).
5. 13. 4CH Audio Output: Provides 4 output channels (DAC0&DAC1 for bass, DAC2&DAC3 for mid-range) integrated with a 2-way digital crossover.

POT5 (MP2 / ADC1) Functional Diagram: Illustrates how POT5 adjusts the relative gain between BANK A and BANK B.

Connection Diagram

The connection diagram shows how to connect the ADSP1701-2.4U to a power supply, PC for programming (SigmaStudio), amplifier boards, and speakers. It also details the ICP/SPI/IIC connections.

Comprehensive Programming Support: The unit supports SigmaStudio programming via the ICP port. WONDOM provides open-sourced demo programs, HEX files, programming guides, and video tutorials for enhanced user experience. QR codes are provided for accessing these resources.

Open-sourced Files Download Link: http://files.sure-electronics.com/download/ADAU1701_2IN4OUTUNIT_OpenSource_DemoProgram&HEX.zip

Troubleshooting

Warranty Terms and Product Usage Restriction

Wondom products come with a one-year warranty from the date of purchase. Customers are responsible for return shipping costs. Visible damage, use on screw holes, or solder pad tinning invalidates the warranty. Damage from incorrect power sources or reverse polarity is not covered. Products are intended for DIY use only and not for industrial applications. The rated operating temperature range is -10°C to 50°C.

Bulk Purchase Rights

The number of products that can be purchased at once is determined by a single transaction, not total annual purchases. Customization options and costs depend on quantity. WONDOM ADSP1701-2.4U is 100% customizable. Retail purchases are available through authorized distributor platforms. A special bundled price is available for minimum orders of 100 units. For 500 units or more, customization of appearance (color, size, logo, etc.) and firmware is possible. Contact WONDOM for details on customization services and standard price lists for large orders.

Origin and Design Location: All Wondom products are designed, manufactured, assembled, and shipped from China.