PURPOSE: To reduce the number of parts and a manhour by forming cut raise parts toward a field side at the outer circumference of the frame of a tweeter, and fitting the tweeter in a bridge provided to a woofer from the front surface.

CONSTITUTION: Two cut raise parts 8 are provided to the frame outer circumference of the tweeter 7 and projection parts 10 for positioning the cut raise parts 8 are provided to the bridge 9a provided to the baffle board 9 of the woofer to which the tweeter is fitted. The tweeter 7 is inserted into the bridge 9a and the cut raise parts 8 are folded to fix the tweeter to the bridge 9a. Consequently, fitting parts such as screws, rivets, etc., are unnecessary and simultaneous calking is performed, so the manhour is reduced to attain great cost reduction. Further, the tweeter is fitted from the front surface of the baffle board, so the disorder of output sound pressure frequency characteristics due to the sound lock effect depending upon the thickness of the bridge part is prevented.