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TPA3116D2 Digital Amplifier Board
The main technical parameters: Operating voltage range: DC 5-24V (current 3A above£¬ such as to power some advice 19-24V / 4A above£¬ best for 24V) Audio Type: Class D Output channel: 2 Frequency response range: 20Hz-20KHz SNR: 100dB Dual channel speaker: 4-8 Euro Maximum output power: 50W (left channel) + 50W (right channel) two channels Dual-channel output power: 12V / 10 + 10W(8 Euro) / 15 + 15W (4 ohms)£¬ 15V / 13 + 13W(8 Euro) / 25 + 25W (4 ohms)£¬ 19V / 22 + 22W(8 Euro) /> 39 + 39W(4 ohms)£¬ 22-24V /> + 32W(8 Euro) /> 50 + 50W(4 ohms). Note: The output power and supply voltage£¬ the speaker impedance audio input size. Generally higher supply voltage£¬ the output power can be supported will be the bigger. Different impedance speaker can support output power is different£¬ usually smaller horns European Power is also easy to do bigger. About Arduio Input Terminal: Please try to use a Shielded type of cable to reduce noise and current sound input connector incurred. The connecting cable is available between the lines open or shorted£¬ will lead to noise or current sound£¬ no sound track£¬ etc.