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Description
Electret Microphone Amplifier PT2399 Mic reverberation Amplifier Audio Dynamic Microphone with NE5532 Pre-Amplifier
Product Description
The microphone reverberation chip adopts PT2399, the microphone amplifier and the pre-amplifier use a ne5532 respectively, and the volume of the two microphones on the microphone board can be controlled independently. Dynamic microphones, electret microphones can be used in general. The board has MIC-1 volume, MIC-2 volume, adjustment of reverberation times, adjustment of reverberation depth, and external audio volume adjustment.
Upgraded version: LM317 low-ripple voltage regulator circuit is used for power supply design. The pre-amplifier uses a ne5532 op amp, with an ic seat, which can be easily upgraded to a more feverish op amp chip to improve the effect. 1, There are two versions of the board: Version 1: The board comes with a potentiometer Version 2: Potentiometer and Plate Separated Send two 300mm single-ended shielded cables 2, There is a bridge stack at the power input end, which can be used for both AC and DC. The DC input can be divided into positive and negative poles, which is more convenient to use.
3, Dynamic microphones and electret microphones are universal and have wider uses. JP1, JP2 are set for the microphone type selection: JP1, JP2 have one tube each, the jumper cap is plugged in, it is the electret microphone working mode, and the jumper cap is not inserted, the dynamic microphone working mode.
