active subwoofer filter
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.