About This Items
- This is a speaker that uses ultrasonic waves that allows you to enjoy extremely sharp directivity.
- The sound quality is about that of a pocket radio, but it's pretty good for a parametric speaker.
- I use 48 40kHz transducers.
- Because they use a special driver circuit, they have higher output than conventional parametric speakers.
- It can reach about 10m to 20m in a quiet room.
- We recommend a power supply of about 19V, which can be used for a long time. It can be used up to 24V, but the radiator gets hot.
- Please replace it with a larger type.
- It will be shipped fully assembled with simple adjustments.
- What's included in the finished kit
- Image of ultrasonic speaker unit and driver board
- what you need
- 15V to 24V, about 2A DC power supply DC plug is standard 5.5mm, center pin is positive
- You can use a DC adapter for your laptop.
- The 3.5mm audio jack is the input, and you can use a sound source that can play speakers, or the speaker output of a PC or laptop.
- The output of smartphones such as iPhones is weak and cannot be used.