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A cox box is an electronic device used in competitive rowing that combines a digital stroke rate monitor and elapsed time readout with a voice amplifier. Although the term "cox box" is commonly used as a generic descriptor of this type of device, the name 'Cox-Box' is a registered trademark of Nielsen Kellerman, one of the several companies that manufacture this type of unit. Cox box is the commonly used name for all the coxing amplifiers. Other brand names include CoxVox, MiniAmp, CoxAmpPro, Coxmate SRT+, Coxmate SX. All deliver amplification of the coxswain's voice using a microphone and series of wired loudspeakers. ==Use== Mainly used in Eights and Fours the read outs are used by the coxswain to monitor the performance of the crew and manage the race. This is of particular importance in Head of the River (time trial) races where the crews race line astern and so performance of other crews cannot be easily gauged. The amplifier is linked to one or more loudspeakers along the boat making it easier for the crew to hear commands, this is particularly important for the rower in the bow seat as they are often furthest away. The coxswain typically wears a headband-mounted microphone, which is attached by a wire and quick release to the cox box. Some units allow a walkie-talkie connection to the coach so they can use the amplification to speak directly to the crew as well. Rowing shells fitted with speed measuring impellers or GPS can report boat speed to a cox box unit, typically measured in Meters/second or 500 meters predicted split time. GPS speed measurement is presently only on Coxmate SCT and SX units. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cox box」の詳細全文を読む スポンサード リンク
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