Abstract: A frame is coupled to a magnetic circuit. The frame includes a plurality of holes which are formed outside the coupling portion and opened toward the magnetic circuit. A case covers the magnetic circuit and the frame, and is opened on a sound radiation direction side. An outer circumferential portion of the case is located on the sound radiation direction side beyond the plurality of holes and forms a first gap with respect to the frame. The first gap is communicated with an opening of the case.

Abstract: A frame is coupled to a magnetic circuit. The frame includes a plurality of holes which are formed outside the coupling portion and opened toward the magnetic circuit. A case covers the magnetic circuit and the frame, and is opened on a sound radiation direction side. An outer circumferential portion of the case is located on the sound radiation direction side beyond the plurality of holes and forms a first gap with respect to the frame. The first gap is communicated with an opening of the case.

Abstract: The mounting bracket assembly has a main structural member for attaching an electronic instrument. The main structural member has a joining portion to secure the main structural member to a frame of an automotive vehicle. A strut is secured to the main structural member, and the strut is able to abut against a trim secured to the frame so as to receive a reaction force from the trim. A stop lever is fitted on the main structural member, and the stop lever has a first end and a second end opposed to the first end. The stop lever pivots around the first end so that the second end comes toward and away from the trim. The second end is positioned near the trim when the stop lever is in its working position. The main structural member is located between the strut and the stop lever in the working position.

Abstract: The mounting bracket assembly has a main structural member for attaching an electronic instrument. The main structural member has a joining portion to secure the main structural member to a frame of an automotive vehicle. A strut is secured to the main structural member, and the strut is able to abut against a trim secured to the frame so as to receive a reaction force from the trim. A stop lever is fitted on the main structural member, and the stop lever has a first end and a second end opposed to the first end. The stop lever pivots around the first end so that the second end comes toward and away from the trim. The second end is positioned near the trim when the stop lever is in its working position. The main structural member is located between the strut and the stop lever in the working position.