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Late version Quad "ESL-57" loudspeaker with black grilles and rosewood end caps. The Quad Electrostatic Loudspeaker (ESL) is the world's first production full-range electrostatic loudspeaker, launched in 1957 by Quad Electroacoustics, then known as the Acoustical Manufacturing Co. Ltd. [1] The speaker is shaped somewhat like a home electric radiator curved slightly on the vertical axis.
The third generation Proton Saga is a subcompact sedan launched in 2016 as the successor to the second generation Saga FLX. It is powered by a 1.3-litre VVT engine and CVT or torque converter automatic transmission, and has improved safety and fuel efficiency features.
Quad electrostatic speaker. In late 1949 (or early 1950), the company launched the CR corner ribbon loudspeaker. This used a Goodmans Axiom 150 cone loudspeaker for the lower frequencies and an electromagnetic ribbon loudspeaker, designed by Acoustical, for the higher frequencies. Fewer than one thousand units were sold.
KEF is a British company founded in 1961 by a BBC engineer, Raymond Cooke. It produces speakers, subwoofers, headphones, and other audio devices, and has won many awards and patents for its innovations.
A surge protector is a device that protects electrical devices from voltage spikes caused by lightning, motors, or power failures. Learn about the different types of surge protectors, how they work, and where they are used in this Wikipedia article.
Bluetooth is a short-range wireless technology standard for exchanging data and building personal area networks. It was developed by Ericsson in 1989 and launched as an open industry standard in 1998 by the Bluetooth SIG, with IBM, Intel, Nokia, and Toshiba as founding members.