PRODUCTS
What is a Super Directional Loudspeaker?
A Super Directional Loudspeaker can send sound the place which you want to send by emitting sound like a laser. Since ultrasonic waves send sound, the straightness of sound is excellent. Almost no sound can be heard from the back or the sides of the speaker.
Directional Loudspeaker PROPA-U50 2Way
– The sound is clean and clear.
– There is a built-in amplifier.
– It is equipped with both a super directional loudspeaker and a general
speaker.
Max. SPL
104dB@1m
Frequency Response
100Hz ~ 5kHz(-10dB)
Directivity
±10°(1kHz, -10dB)
Power
12VDC(12W)
Size/Weight
170×242×250mm / 4.5kg
Input Method
Audio stereo jack(3.5Ø) 0.9V peak

– The sound is clean and clear.
– There is a built-in amplifier.
– It is equipped with both a super directional loudspeaker and a general
speaker.
Max. SPL | 104dB@1m |
Frequency Response | 100Hz ~ 5kHz(-10dB) |
Directivity | ±10°(1kHz, -10dB) |
Power | 12VDC(12W) |
Size/Weight | 170×242×250mm / 4.5kg |
Input Method | Audio stereo jack(3.5Ø) 0.9V peak |
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Features of PROPA-U50 2way
Main Features of Super Directional Loudspeaker

– Test of the Super Directional Loudspeaker –

- Test report (NSSC-TR-16-0054), Next Generation Sound Supporting Center
- Max. SPL : 104dB
- Frequency range : 100Hz~5kHz
How to use a Directional Loudspeaker

Each sound does not interfere with each other, and only the sound of the ad you are looking at is heard.

Sound can be transmitted only to the desired area, so effective information can be provided.

The announcement can be delivered to those who need attention without being assimilated to ambient noise.

Sound can be delivered only to where you want without noise damage to the surrounding areas.
