WONDOM DKT4X25AB Audio Amplifier Board Class DIY Kit

DKT4X25AB 4 Channel(s) x 25Watts/Class AB

Audio Amplifier DIY Kit – TDA7569BLV

The DKT4X25AB is a DIY kit featuring the TDA7569BLV integrated chipset, a high-efficiency power amplifier IC developed by STMicro- electronics. This chipset supports efficient operation at low voltages and minimizing power dissipation compared to traditional Class AB amplifiers.

Features

• Class AB output utilizing the TDA7569BLV integrated chipset.
• The DKT4X25AB provides 4 x 25W at 4Q with a 14.4V supply, ideal for car battery use, and 4 x 18W at 4Q with a 12V supply, suitable for an adapter.
• Flexible audio input connector allow connectivity with ADP panel.

Applications

• Education Purpose.
• DIY Project.
• Solder Practice.

Schematic

NOTE: For a comprehensive understanding of the amplifier boardls design and functionality, refer to this schematic section.
This schematic offers a visual representation of the circuit, including the detailed overview between components and theirelectrical pathways. Familiarizing yourself with the schematic is crucial for successful assembly, customization, and troubleshooting. Take the time to explore this section to enhance your overall experience with this Audio Amplifier DIY Kit.

Parameters:

• Supply Voltage1 8V DC
• Output Connector : JST VH 3.96mm 2CKT
• Output Power : 4X25W, 4Q (14.4V)

Note: Never apply voltage more than 18V or it may damage the amplifier permanently.

• Input Connector : JST PH 5CKT / 3.5mm Audio Socket
• Net Weight : 11 6.0g (±1 Og)/4.000z (±0.250z)
• Product Size : 82.55 (3.25″) x 63.50 (2.50″) x 31.75 (1.25″) mm(inch)

Mechanical Drawing

Please ensure that the printing configuration is set to 1 :1 ratio to maintain accurate document proportions.
The PCB layout and component shown may differ from the actual prcxiuct. Variations in design and lor may

Installation Summary

1. Install SMD Resistor(s)
   Place SMD resistors on the bottom side of the board according to their respective positions.
2. Install Ceramic Capacitor(s) & Fuse Install the ceramic capacitor and fuse into its designed position. Ensure that the leads are properly installed and soldered securely.
3. Install Electron Capacitor(s) & Through- Hole Inductor(s)
   Install the electrolytic capacitor and through-hole inductor on located designed area. Note the polarity of electrolytic capaci- tors (+) and (-) leads are correct before soldering into it.
4. Secure the Heatsink and TDA7569
   Attach the IC and Heatsink using an M3 screw on the screw hole and secure them tight.
5. Install Heatsink and TDA7569BLV IC
   Then, carefully place the Heatsink and IC onto the designed position.
6. Install Remaining Component(s)
   Proceed to install the remaining components onto the PCB board. Take care to align each component correctly and solder them securely.

 

Board Layout

1. Slide Switches 6Pin Use for controlling in the board
2. Ceramic Capacitor Use for temporarily stores electrical energy through distributing charged particles. Value : 1uF
3. JST-PH-2mm 5 Circuits Connector Use for external audio input.
4. Ceramic Capacitor Use for temporarily stores electrical energy through distributing charged particles. Value : 330pF
   
5. Electrolytic Capacitor 20mm Use for temporarily stores electrical energy through distributing charged particles. Value: 470uF
6. 3.5mm Audio Connector Use for audio input.
7. Ceramic Capacitor Use for temporarily stores electrical energy through distributing charged particles. Value : 0.22uF
8. Heatsink Use to dissipates heat from components to prevent overheating and ensure reliability.
9. Ceramic Capacitor Use for temporarily stores electrical energy through distributing charged particles. Value : 0.1uF
10. Film Capacitor Use for stability performance and low-loss for the device. Value : 1uF
11. Electrolytic Capacitor 20mm
12. Use for temporarily stores electrical energy through distributing charged particles. Value : 10uF
13. Transistor Use for switching application. Integrated with additional components, which is the resistors.
14. Varistor Used to protect against sudden voltage increases, such as power surges or lightning strikes, preventing damage. Value: 24V-31 V
15. JST-PH-2mm 2 Circuits Connector Use for mute control connector and standby control connector.
16. JST-VH-4mm 2 Circuits Connector Use for audio output at OUTR and OUTL.
17. Green LED 3mm Use as the output indicator for OUT1 and OUT2.
18. TDA7569BLV Integrated circuit with Class AB specialize in amplifier audio design.
19. Molex Micro-Fit 2 Circuits Connector Used for power supply connector.
20. Varistor Used to protect against sudden voltage increases, to prevent damage.
21. Value: 35V-43V 21 Fuse Used for circuit overcurrent protection. Value: 8A
22. Inductor Used to store energy in a magnetic field, regulating current flow in circuits. Value : 22uH
23. Electrostatic and Surge Protection Use for electrostatic and surge protection includes safeguard- ing electronics from damage. Value: 8.8A
24. Resistor Used to regulate the flow of electric current within a circuit by impeding its passage.
25. Zener Diode Used to allow current to flow in one direction while blocking it in the opposite direction. Value : 4.7V
26. Diode Used to allow current to flow in one direction while blocking it in the opposite direction. Value : SS14F

 

Electrical Parameters

Warranty Terms and Product Usage Restrictions

WONDOM products come with a one-year warranty starting from the date of purchase. Customers are responsible for the cost of returning the goods to the seller, and by making a purchase, you agree to this condition. Due to the nature of DIY products, visible damage or use on screw holes or tinning of solder pads directly invalidates the warranty. Damage caused by the use of incorrect power sources, such as exceeding the specified voltage range or reverse polarity, is not covered under warranty. All WONDOM products undergo thorough testing before shipment. We do not accept bulk returns after a bulk purchase. If you are unsure of the quantity you need, please purchase the appropriate quantity as needed. All WONDOM products are intended for DIY use only and do not support any industrial applications. The rated operating temperature range is 0-40°C. Please refrain from using WONDOM products in industrial or any special industrial environments. If you require products tested for industrial operating temperature ranges, we recommend seeking products clearly labeled to support operating ranges such as -20-65°C or -40-85°C. By purchasing these products, customers agree to these terms and conditions, which include their responsibility to submit their warranty before soldering.

Bulk Purchase Rights

All rights for bulk purchases are limited to the quantity purchased in a Bulk purchase right are limited to the quantity purchased in a single transaction and are unrelated to the annual or cumulative purchase volume. Pricing for each product may vary with customization and is determined based on the quantity purchased in a single transaction. Retail purchases can only be made through the Taobao and AliExpress platforms. The listed prices on these platforms are retail prices and may fluctuate at any time. For purchases of a minimum of 500 units, please send an email to our contact mailbox to place your purchasing order or to request customization. WONDOM provides customization options for such orders, including changing the PCB color and silk screen for products with enclosures and placing your brand logo on the PCB or enclosure. Please note that WONDOM does not offer other customization services, such as changing PCB dimensions or adding/removing ports. A standard price list for purchases of 500 units or more can also be requested from our contact mailbox.

About The Manual
This manual displays general installation guidelines. However, please note that proper installation of components requires qualified experience. If you do not have the knowledge and tools to successfully perform this installation, we strongly recommend consulting an authorized WONDOM dealer about your installation options. Keep all instructions and sales receipts for reference.

Components Checklist

Specifications are subjected to change without any further notice. Copyright © 2023 by WONDOM Industrial Audio Vendor. All rights reserved For more information please visit www.wondom.com

FAQ

• Q: What is the warranty for the DKT4X25AB amplifier kit?
  A: The warranty terms and product usage restrictions indicate warranty details. Please refer to the manual for more information.
• Q: Where can I purchase additional components for the amplifier kit?
  A: For purchasing additional components, please check Taobao or Aliexpress by searching for the product name.

Documents / Resources

WONDOM DKT4X25AB Audio Amplifier Board Class DIY Kit [pdf] User Manual DKT4X25AB, DKT4X25AB Audio Amplifier Board Class DIY Kit, DKT4X25AB, Audio Amplifier Board Class DIY Kit, Amplifier Board Class DIY Kit, Board Class DIY Kit, Class DIY Kit, DIY Kit

References

• User Manual