The sound characteristics is changed by the cabin of the car which mount the speaker. Therefore the speaker must be design to consider the cabin of the car. In this study, the mechanical components of the nonlinear speaker model are investigated by measurement. The frequency characteristics of the sound and the sound pressure level for the same size speakers which are adapted to domestic car model(semi-mid size & mid size car) are investigated, too. From the measurement, we can investigate the differences of the sound characteristics and the thiele-small parameter such as force factor, mechanical mass of driver diaphragm, mechanical resistance of driver suspension losses and mechanical stiffness of driver suspension. This means that the speaker design parameters are changed by the car model

Abstract 
 1. 서론
 2. 차량용 우퍼스피커의 구조
 3. 스피커의 특성변수
  3.1 실험방법
  3.2 실험결과
 4. 실차장착 실험 및 결과
  4.1 실험방법
  4.2 실험결과 및 고찰
 5. 결론
 참고문헌

• 이태근(대덕대학교 정밀기계공학과) | Tae-Keun Lee
• 김병삼(원광대학교 공과대학 기계자동차공학부) | Byoung-Sam Kim 교신저자