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This electronic learning kit is designed for youngsters ,amplifier lovers, students and hobbyists to learn fundamental concepts and practice skills such as

component identification, soldering, and testing. Before diving into programmable electronics such as Arduinos, this circuit is highly

recommended for anybody interested in electronics.

You'll need a 12V, 3A battery or transformer for power supply. This package not included the transformer. The presence of an adult is required at all times.

STEPS:

1. Solder the components to the PCB Board.

2. Connect the J points by wire.

3. Connect the LED s to sound level display. You can adjust the sound level indication by 4.7K V/R.

4. After soldering the components to the PCB board, connect the 12V,3A power supply.

5. Connect the Audio input and Speakers for output.

6. Adjust the Volume, Bass, Trible and balance for your requirement.

7. Use an amplifier enclosure or casing for beautiful finish.

8. Please feel free to massage us for any technical support.




Description

Operating voltage: 12V, 3A

Output : 40W Stereo ( Each channel 20 W)

Use the 1.6MM thick double-sided Fiber Glass Board.

Package Contents:

LA4440 Stereo Amplifier (20W+20W) (Double IC)

Resistors

47KΩ 02

180KΩ 02

120KΩ 02

1.5KΩ 03

2.2KΩ 02

68KΩ 02

560KΩ 02

68Ω 02

330KΩ 02

5.6KΩ 04

100KΩ 01

10KΩ 04

560Ω 04

18KΩ 01

4.7KΩ 02

1KΩ 03



Capacitors

220µF(16V) 03

1000µF(25V) 04

100µF(16V) 05

47µF(16V) 04

2200µF(16V) 01

0.01µF(103) Mylor 02

3.3nF(332)Mylor 02

1µF(50V) 03

0.22µF(224)Ceramic 02

10µF(16V) 04

0.002µF(202) Mylor 04

0.1µF(104) Ceramic 02

47PF Ceramic 01

100PF Ceramic 02

4.7µF(25V) 06



Controls

10K Preset 01

100K Stereo (Bass) 01

50K Stereo (Treble) 01

50K Stereo (Volume) 01

50K Stereo (Balance) 01



IC

LA4440 02

LB1405 01

16 Pin Base 01



Transistors

C945 04



Diodes

1N5392 02

8.2V Zenner (1W) 01

Introduction
The LA4440 Bridge Stereo Amplifier is a powerful and highly efficient audio amplifier that uses two LA4440 ICs in bridge mode. This amplifier is designed to deliver high-quality stereo sound with maximum clarity and low distortion while providing Bluetooth connectivity for seamless playback of your favorite music. The LA4440 IC is an excellent choice for high-frequency applications, and when used in bridge mode, it can deliver superior sound quality and efficiency.

In this article, however, we will discuss the features and benefits of the LA4440 Bridge Stereo Amplifier with Bluetooth, and how it can enhance your audio experience. We’ll explore the technical details behind the LA4440 IC and bridge mode, and how they work together to deliver high-fidelity sound. We’ll also highlight some of the key advantages of using an amplifier in bridge mode, and how these benefits can improve your listening experience.

Thanks & Regards.

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