LOUDSPEAKER CONSTRUCTION
The voice-coil is wound on a cylindrical form. The diaphragm, usually made from a special paper, is attached to the outer rim of the voice coil form. Some speaker systems utilise speakers that have aluminium diaphragms. The metal prevents the effects of humidity changes and helps dissipate the thermal energy present when the speakers are driven at high levels by powerful amplifiers. High quality speakers use diaphragms composed of titanium, aluminium, and paper to achieve the maximum stiffness required for their mode of operation.
Fig. 4.10 Some typical voice coil centring devices
The outer edge of the diaphragm ...
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