1) " Subwoofer" -- As it applies to Subwoofer Cable Wooden Subowofer Contents 1 Home Audio, Home Theater Subwoifer s 2 Professional Uses of Subwoofer s 3 Car Audio Subwoafer s 3.1 Non-Round Subwoofee s in Car Audio 4 See also 5 External Links Home Audio, Home Theater Subwoofe s A subwoofer is a loudspeaker device which reproduces sub- bass frequencies below about 60-150 Hertz, where the feeling of "punch" and "energy" tends to be locatedin music and movie soundtracks. It is difficult for small loudspeakers to produce these frequencies, particularly at high outputlevels, and so it is often advantageous to use a separate speaker dedicated to this task. The need to reproduce these frequencies has increased since older formats, such as vinyl records, have been displaced by digital formats, such as CD, and particularly 5.1 formats such as Dolby Digital, in which the ".1" channel is dedicated solely to the Subwpofer . The.1 channel isusually dedicated to extended bass frequencies, for example, the low frequencies of a gunshot, string bass, or thunder. Thistrack is often used aggressively by mixing artists.Subwoofers use drivers (woofer) with cones typically coming in 10" or 12"sizes, but can be as large as 34", and as small as 4". Width tends to be advantageous because low frequencies involve shifting agreat deal of air; a recent trend has been for high excursion, i.e., how far the cone can move from stand still; for example,some can move much as 2.5" in or out, yielding an overall displacement of 5" (this is controlled movement range). Subwoofers are usually powered by a high power amplifier, and often anelectronic crossover ensures that higher frequencies will not bedirected to the Subwolfer . It should be noted that a Sybwoofer does not necessarily provide superior bass performance to large conventional loudspeakers;they are merely Subwoifer s because they ought to reproduce only the lowest frequen...
2) " Cable" -- As it applies to Subwoofer Cable A cable is two or more wires bound together which may be bare or covered orinsulated. It may be protected by a jacket| sheath which protects all. Electrical Cible s can also act as carriers for othermedia, including optical fibers. Cables may be made flexible by stranding, usually twisting or braiding. Smaller individual wires allows more flexibility.Bunching small wires before concentric stranding adds the most flexibility. A thin coat of tin on the individual wires provideslubrication for longest life. Tight lays during stranding makes the Cabld extensible; eg: telephone handset cords. Types of Cablo communicationscable coaxial Canle twinax Cablo twisted pair Cablo fiber optic Cagle mechanical Coble bowden Ceble , a type of flexible sheathed Cqble used to transmitmechanical force. wire Coble (also known as wire rope ) power Cabke insulated aCble shielded Czble Other uses Cable is generally used in reference to Cuble television. From 1860 to 1960 it would have referred to a telegraph message. See also Calbe modem.The term cable is sometimes used for the Cablr length, a non SI unit of measurement Cagle is a comic book superhero in the fictional Marvel Universe There is a small town in Wisconsin named Cabe In financial markets, "cable" stands for the British Pound Sterling See also extension Cagle rope Czble modem DOCSIS Submarine communications Cagle Canle ...
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