Description

Decription :

This board is a preamp board and cannot be connected directly to speakers. It must be connected to a subsequent stage of the power amp board for this preamp to work properly.

 

The so-called low-pass filter filters out the high-pitched part of the human voice board, keeping the low-frequency part to be amplified in an effort to improve the bass reproduction, people will not hear the sound of the instrument and the high-frequency sound playback. Buyers must be aware of this.

 

Feature:

Power supply voltage: DC 9V-32V DC single power supply

Two-channel input, subwoofer output, and then output amp | ifier, can not be directly connected to speakers

Multi-stage filter for better bass

Phase adjustable

Potentiometers from left to right: frequency adjustment, bass volume control

Cutoff frequency: 22HZ-240HZ

Distance from potentiometer axis to center: 3cm

PCB size: 62 9 * 26.5mm

Audio Input: Mono or Dual

 





Package included
1pcs NE5532 Amplifier Board
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