Description

3W Mini Speaker DIY Electronic Kit Small Power Amplifier Computer Audio Welding Practice Training Speaker Single/Dual Audio DIY Kit

"Features:

1. Using high-quality materials, the quality is guaranteed

2. Simplified components, easy to use and fast welding

3. Using 8002 professional-grade music chip, high-quality 3W speakers

4. Stereo sound, shocking sound quality

5. Light and delicate compact shape, does not take up too much desktop space

parameter;

Working voltage: 5V

Current: more than 1A

Amplifier power: 3W*2

Power supply method: mobile phone charger (charging treasure and computer are not recommended, because the computer current is too small, it will affect the sound quality, it is recommended to use 2A current for power supply) directly weld the power socket and plug in the wire directly. Solder the 4 shielded wires one by one, D1 D2 VCC GND.

Precautions:

1. When welding the power switch, try to control the welding time within 3 seconds to prevent the switch from being damaged by excessive temperature! (You can tin the switch pins first, then solder the wires)

2. Due to the limited current output by the USB port of the computer, if it is plugged into the USB port of the computer to supply power, the sound quality will be greatly reduced when the volume is turned up or the bass is heavier, so it is recommended to use a separate USB power supply (output 1A or more) to power the speaker.

3. There are sop8 SMD components on the back, you need to be sure to buy the spare parts.

4. Since the digital volume control in the power amplifier chip has a large gain, when increasing its volume, be careful not to make the input signal too large to cause the signal to cut and limit, resulting in sound distortion.

5. The acrylic shell needs to be assembled by itself. There are positive and negative sides. If it is installed incorrectly, it can be installed in reverse. easier. Need to tear off a layer of paper is the transparent shell.

Note: The main audio has a power switch, but the sub audio does not. If you buy a single audio, it is equipped with a power switch. There are volume adjustment knobs, and spectrum adjustment knobs.

DIY must-reads:

Electronic production is an activity that requires a certain electronic foundation and hands-on ability. Due to the different hands-on ability and technical level of each friend, we cannot guarantee that all friends can DIY successfully

Package included:

Mini Speaker Kit*1"