- Color: Blue
- Material: Glass fiber
- Potentiometers: Frequency adjustment, volume control (left to right)
- Supply voltage: AC dual 15V (5W)
- Frequency range: About 22Hz~210Hz
- Spacing between the potentiometer: 41.5mm
- Use Two NE5532 Op-amp to do the signal processing
- Connect its input sockets to normal amplifier, it can form a subwoofer
- The input can be single channel or stereo
- Easy to use, perfect for your DIY project