Calotte-type treble loudspeaker

Claim 1

A loudspeaker (10) comprising a pot magnet (12); a pole core (14) comprising an upper pole plate (15) and a highly energized disk (17) arranged between the upper pole plate (15) and a bottom (16) of the pot magnet (12), said pole core being arranged concentrically inside the pot magnet (12) and at a certain distance (18) from an inner face thereof; a one-piece membrance (21) having a central semispherical portion, a peripheral part designed to act as a centering portion; a moving coil (19) that is attached to the membrance (21) in a transition area between the centering portion (22) and said semispherical portion, said moving coil having a free end that projects into the gap (18) between the inner face of the pot magnet (12) and the pole core (14); and a single-piece case component (11) that covers both the semispherical portion of the membrance (21) and the centering portion (22), said case component being provided with acoustic equalizers (30) opposite said semispherical portion, and said case component being connected to the pot magnet (12), the diameter of the moving coil (19) is less than 19 mm, the single-piece case component (11) is connected to the pot magnet (12) exclusively by means of elastic snap catches (32) arranged on the side wall (24) of the case component, where locking hooks (35) forming an integral part of said snap catches (32) engage with a collar (25) arranged on the outer surface of the pot magnet (12), and the single-piece membrance (21), once the case component (11) has been locked to the pot magnet (12), is maintained in its position between the case component (11) and the pot magnet (12) solely and exclusively by virtue of the fact that a part of the membrance (21) is pressed against said pot magnet (12) by a free end (29) of a piece of tubing (28) arranged on said case component (11).