tone
When adjusting, it should be noted that the gap between the iron core and the armature must be uniform, flat, and not skewed, otherwise it is easy to collide with each other during work, which will make the speaker produce harsh noises.
volume
The volume of the electric horn is related to the size of the current passing through the speaker coil. The greater the current passing through, the louder the volume, and vice versa. The volume can be changed by adjusting the contact pressure. The adjustment of speaker volume and sound quality is interrelated, so it is necessary to repeatedly adjust to obtain the best sound.