subwoofer filter low pass frequency
Circuits Audio Preamplifier
Bass preamp circuit subwoofer preamplifier board
BY
Toni
Subwoofer preamplifier with bass preamp circuit filter, ideal for activating active subwoofer speaker, still requires a power amplifier. It has ...
Hi Adam, You can connect a 12 or 18V DC source in the power connector, do not worry about polarity.