지향성 스피커(혼 스피커)대비 소리의 출력 각도가 매우 좁아 멀리서도 스피커가 설치된 차선에서만 더 잘들립니다.

Compared to Horn speaker, the angle of sound output from SD speaker is very narrow. The SD speaker Sound not only can clearly heard in the lane the speaker is positioned but also the sound does not disturb other lanes frome a distance.

Test Site : Open Outdoor
Temp : 7 ℃
Frequency : 1Khz sine wave

Test Site : Hwasung Seawall
Weather Condition : 4 ℃
Vehicle type : SUV(Kia Sorrento)
Vehicle Velocity : 100 ~ 110km/h

Test Site : Hwasung Seawall
Weather Condition : 4 ℃
Vehicle type : Sedan(Renault SM5)
Vehicle Velocity : 100 ~ 110km/h