คุณสมบัติ:1. Using high-quality materials, with stereo sound effect
2. DC 12V power supply, 2.1 channel output, stable performance
3. Two-channel output, the output impedance is 4 Ω, and the output power is 2*15W+30W
4. Onboard volume knob, you can freely adjust the volume
5. Circuitry with Class D efficiency and true high-end sound quality
พารามิเตอร์ผลิตภัณฑ์:Product Name: Audio Amplifier Board
รุ่นสินค้า: XH-A355
Function type: audio amplification
Chip type: D class
รุ่นชิป: YDA138-E * 2
แรงดันไฟฟ้าของแหล่งจ่ายไฟ: DC12V
สแตนด์บายปัจจุบัน: 60mA
Output channel: Stereo*2+Bass*1
Output power: 2*15W+30W ( 4Ω)
Signal-to-noise ratio: 88%
ขนาดผลิตภัณฑ์: 80*60*15มม
ขนาดการติดตั้ง: 73Mm
Installation hole diameter: 3mm
★FAQ★1. When the volume is turned up, the sound is stuttered and intermittent, but it can be played normally after the volume is turned down.
Answer: One of the reasons: due to the low power of the power supply, the total output power of this power amplifier board is 60w. When choosing a power supply, the recommended voltage is DC12V and the current is about 5A.
Reason 2: If the power supply is normal, it may be that the power of the speaker is too low. For example, the output is 20W, but a 3W speaker is connected. If the volume is turned up, there will be a freeze phenomenon, and the speaker may be burned.
2. The noise is too loud when playing music, or there is background noise even without playing music.
Answer: The function of the power amplifier board is to amplify the signal. The main source of noise is the radio clutter in the environment that is amplified by the power amplifier board, so as long as it is a power amplifier board, there will be noise. It is recommended that the audio cable should be shielded as much as possible. Another possibility is that the audio source has noise, which is not found in normal mobile phones and MP3 players. Most of them are on some old front-end boards, which are not compatible with our companys power amplifier boards. You can add an audio isolator or a coupling capacitor test to see if it works. Cannot be removed.
รายการสินค้า:1X audio amplifier board
