It's a Subwoofer processing circuit, which is low-pass filter. Output Connected to the Ordinary Pure power amplifier, Can constitute a subwoofer amplifier. Input can be a channel or a stereo. Frequency Adjustment range about 22Hz-210Hz. The operating voltage is dual 15V AC. Circuit consumption power is very small, 5W transformer is sufficient.Very easy to connect,and enjoy diy fun.
Subwoofer processing circuit, which is low-pass filter. Output Connected to the Ordinary Pure power amplifier, Can constitute a subwoofer amplifier. Input can be a channel or a stereo. Frequency Adjustment range about 22Hz-210Hz. The operating voltage is dual 15V AC. Circuit consumption power is very small, 5W transformer is sufficient. Feature: