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2채널 2x20W 스테레오 블루투스 오디오 앰프
(2x20W Stero Digital Audio Amplifier -YDA138)
개요
- 본 제품은 2채널 2x20W 스테레오 블루투스 오디오 앰프 입니다.
- 블루투스 5.0을 지원하는 오디오 앰프로 2x20W 2채널 스테레오를 지원합니다.
- 블루투스나 AUX 커넥터를 통해 오디오 신호를 입력할 수 있습니다.
- DC12V로 동작합니다.
특징
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Product name: Bluetooth-compatible-compatible audio amplifier board
Function type: Amplify audio
Chip model: YDA138-E*2
Bluetooth-compatible-compatible version: 5.0
Power supply voltage: DC12V 4A
Standby current: 80mA
Output channel: two-channel stereo
Output power: 2*20w (4Ω)
Signal to noise ratio: 88%
Product size: 89*62*17mm
Installation size: 82*55mm
Installation aperture: 3mm
문서
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Common Problem
1. About the length of Bluetooth-compatible-compatible connection.
Answer: After testing, the connection distance of different mobile phones is different. The Bluetooth-compatible-compatible connection distance of OPPOR9m we tested is only 2-3 meters; while the Bluetooth-compatible-compatible connection distance of Honor and Apple mobile phones can reach more than 20 meters.
2. When the volume is turned up, the sound will be stuck, intermittently, and it can be played normally after the volume is turned down.
answer:
Reason 1: due to the low power of the power supply, the total output power of this Bluetooth-compatible-compatible power amplifier board is 4oW. The recommended voltage for power supply selection is 12V and the current is above 4A.
Reason 2: If the power supply is ok, it may be that the power of the speaker is too low. For example, if the output is 20W, but a 5W speaker is connected, and the volume is turned on, there will be a stutter phenomenon, and the speaker may be burned out.
3. There is too much noise when playing music, or there is a bottom noise when no music is played.
Answer: The function of the power amplifier board is to amplify the signal. The main source of noise is that the radio clutter in the environment is amplified by the power amplifier board, so as long as it is the power amplifier board, there will be noise. Therefore, try to use the audio cable with shielding function. It is also possible that the sound source is noisy, which is not found in normal mobile phones and MP3s. Most of them are on some old front-end boards and are not compatible with our company's power amplifier boards. You can add audio isolators or whether the coupling capacitors can be removed.
4. The problem of not being able to connect to Bluetooth-compatible-compatible.
Answer: The Bluetooth-compatible-compatible indicator light flashes regularly when it is working normally. If it stays on or does not light up, there may be a problem with the Bluetooth-compatible-compatible module. You can contact customer service to deal with it.
5. The mobile phone can be connected but the laptop or desktop computer cannot be connected.
Answer: If the phone can connect and play music, it means that there is no problem with the Bluetooth-compatible-compatible power amplifier board. There may be a problem with the computer's Bluetooth-compatible-compatible driver, the version is too old or there are files missing. It is recommended to uninstall and then install the latest version of the driver.
