This allows a portion of the lower range to be coupled to the front wave produced by the woofer, in order to enhance the low frequency response. The best results for a vented speaker come when using woofers with a QTS in the range of .10 to .40. The voice coil is the coil of wire fixed to a cylinder at the apex of the loudspeaker cone that interacts with a magnetic field. With the help of other speaker components, the voice coil is the active transducer that converts electrical signals from the amplifier or receiver into mechanical energy, which we hear as sound. The voice coil cylinder is the part of the speaker around which the voice coil is wound.
More advanced speakers offer a heat-resistant voice coil to prolong speaker life.
Voltage Voltage is an electrical charge, or potential difference, between two points, one being of higher relative voltage than the other is. A 1.5-volt 'C' battery has 1.5 volts of difference between the positive and negative terminals, for example. Voltage can be thought of metaphorically as a pressure, such as water pressure in plumbing, that is available to initiate action or work. Volume Volume is obviously the most common word used to specify the control of relative loudness of sounds. It also pertains to the function on many electronic devices that is used to control the loudness.