大象传媒

Engineers show us the key components in a loudspeaker and explain how they work. A speaker consists of a number of constituent parts including the drive units, the crossover circuit, the cabinet, the tweeter, the mid-range and the woofer. The crossover filter feeds different frequencies to the appropriate drive unit. In each drive unit the signal makes a coil vibrate in a magnetic field, which moves a cone to produce a sound. The cabinet is an essential component in producing the final sound. We see how the speakers are tested before being dispatched.