Abstract: The control of vibration and acoustic radiation in rectangular confined spaces has been an important challenge in engineering. In this study， a solution is proposed with a sensor-actuator control system consisting of a loudspeaker， a base and a piezoelectric ceramic sensor. This design has the advantages of lightweight， low natural frequency and integrated sensing/actuator design. However， the strain-integra control scheme used for the integrated sensor-actuator suffers from stability problems. To overcome these problems， this paper utilizes a control strategy with a band-pass filter. The study tests the mechanical properties of this home-made inertial actuator， and determines the structural modes that have the greatest impact on the acoustic performance. A band-pass filter control strategy is used to selectively modulate these structural modes. The experimental results show that the homemade inertial actuator can effectively generate inertial forces， while the band-pass filter can effectively reduce the structural vibration， especially in controlling the first two acoustic cavity modes in the low-frequency band， which exhibits a significant effect. This approach is more flexible in controlling low-frequency noise in confined spaces and provides an efficient solution to the problem of structural noise in engineering environments.