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  • Bass reflex

    serch.it?q=Bass-reflex

    enclosure schematic (cross-section). RCA bass reflex shelf stereo speakers. A bass reflex system (also known as a ported, vented box or reflex port) is a type of loudspeaker enclosure that uses a port (hole) or vent cut into the cabinet and a section of tubing or pipe affixed to the port. This port enables the sound from the rear side of the diaphragm to increase the efficiency of the system at low frequencies as compared to a typical sealed- or closed-box loudspeaker or an infinite baffle mounting. A reflex port is the distinctive feature of this popular enclosure type. The design approach enhances the reproduction of the lowest frequencies generated by the woofer or subwoofer. The port generally consists of one or more tubes or pipes mounted in the front (baffle) or rear face of the enclosure. Depending on the exact relationship between driver parameters, the enclosure volume (and filling if any), and the tube cross-section and length, the efficiency can be substantially improved over the performance of a similarly sized sealed-box enclosure.

  • Diatone

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    Diatone was a division of the Japanese electronics manufacturer Mitsubishi Electric which made loudspeaker drivers and home and studio loudspeaker systems. It was founded in 1945 to manufacture monitor speakers for NHK (Japanese Broadcasting Corporation) and was closed down in 1999. The Diatone brand currently sees limited use on aftermarket car stereos and speakers manufactured by Mitsubishi Electric exclusively for the Japanese domestic market.

  • JVC

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    , , usually referred to as JVC or The Japan Victor Company, is a Japanese international professional and consumer electronics corporation based in Yokohama. Founded in 1927, the company is best known for introducing Japan's first televisions and for developing the Video Home System (VHS) video recorder. From 1953 to 2008, Matsushita Electric Industrial Co., Ltd. was the majority stockholder in JVC. In 2008, JVC merged with Kenwood Corporation to create JVCKenwood. JVC sold their electronic products in their home market of Japan under the "Victor" name with the His Master's Voice logo, but used the name JVC or Nivico in the past for export due to differing ownership of the His Master's Voice logo and the ownership of the "Victor" name from successors of the Victor Talking Machine Company. In 2011, the Victor brand for electronics in Japan was replaced by the global JVC brand. However, the previous "Victor" name and logo is retained by JVC Kenwood Victor Entertainment.

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