This is parametric speaker experiment kit. This is complete assembled.

You can experiment directive sound beam.

High quality like FM radio. High pressure sound beam.

sound beam reach about 30 to 50m in silent room.

Kit including assembled PCB with tiny instructions.
This kit is based article of Elector magazine in March 2011.
Please read this article for details of kit.

• 10mm 100pcs ultrasonic transducers(black plastic type)
  
• PWM driver PCB(SMD components are already assembled)
• sound card for micro sd , bluetooth
• speaker level input( at least 1W or 2W)
  

You need 15V to 19V 2A DC power supply . 15V is good for long play

DC power jack is most popular 5.5mm type using laptop.

you need external sound amp.

PWM driver board is already assembled.
you need to solder speaker board.

please ask me more informations.

if you want more strong sound beam, I can offer for you.

The parametric effect has a sharper directivity as the sound pressure per unit area increases. The 10mm transducer used in this kit has a high sound pressure of over 110db. Smaller transducers have a higher sound pressure per area than larger transducers.

If you have no knowledge of audio or electricity, don't buy this kit. This kit is for those who have the knowledge to perform experiments. If it connects but does not work, please tell me the detailed setting status. All kits are shipped after confirming that they work properly.

Please note that you may be charged customs duties when you receive your package.