Speaker Components - Palmer CAB 212 G12A OB Manuel D'utilisation

5.2) SPEAKER COMPONENTS

The key working components of a loudspeaker are shown in the diagram
below. When an electrical current passes through a wire coil (the voice
coil) in a magnetic field, it produces a force which varies with the cur-
rent applied. The cone, connected to the voice coil, moves in and out,
creating waves of high and low air pressure.
The coil and magnet assembly are the 'motor structure' of the loudspeak-
er. The movement is controlled by the loudspeaker's suspension which com-
prises the cone surround and the 'spider'. The surround and spider allow
the coil to move freely along the axis of the magnet's core (or 'pole')
without touching the sides of the magnetic gap.
GASKET
DUST
CAP
SPIDER
BASKET
CONE
TERMINALS
MAGNET
TOP
PLATE
VOICE
CORE
COIL
BACK
PLATE
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