Description

XH-A121 TDA7498 Digital Power Amplifier Board  With Fan Class D 2*160W 2X160W High Power Dual Channel Audio Amplifier Module This product is suitable for 160W dual-channel loudspeakers. It adopts TDA7498E chip. It is a class D audio amplifier IC chip. It is powered by a single power supply. It is mainly used in home theaters and active speakers. The sound quality and performance are better than similar amplifiers.

Product Parameters

Product name: Audio amplifier board

Product model: XH-A121

Function type: Amplify audio

Chip type: digital chip

Chip model: TDA7498E

Power supply voltage: DC12~24V

Standby current: 110mA

Number of channels: stereo*2

Output power: 160W*2 (4~8Q)

Appearance size: 112*84*25mm

Installation hole distance: 105*77mm

Common Problem

When the volume is turned up, the sound will be stuck, intermittently, and it can be played normally after the sound is turned down.

Answer: Reason 1: Due to the low power of the power supply, the total output power of this power amplifier board is 320W. When selecting the power supply, it is recommended to select the voltage at 24V and the current at about 13A.

Reason 2: If there is no problem with the power supply, it may be that the power of the speaker is too low. For example, if the output is 100W, but a 25W speaker is connected, the sound will be stuck when the volume is turned on, and the speaker may be burned out.

There is too much noise when playing music, or there is a background 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. It is recommended to choose the audio cable with shielding function as much as possible. It may be that the sound source is noisy. Normal mobile phones and mp3 will not have it. Most of them are on some old front-end boards, which are not compatible with our company's power amplifier boards. You can add audio isolators or coupling capacitor tests. Check if it can be removed.