Magnavox is an American electronics company. It was purchased by North American Philips in 1974, which was absorbed into Dutch electronics company Philips in 1991. The predecessor to Magnavox was founded in 1911 by Edwin Pridham and Peter L. Jensen, co-inventors of the moving-coil loudspeaker at their lab in Napa, California, under United States Patent number 1,105,924 for telephone receivers. Six decades later, Magnavox produced the Odyssey, the world's first home video game console.
An audio power amplifier amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones. Audio power amplifiers are found in all manner of sound systems including sound reinforcement, public address, home audio systems and musical instrument amplifiers like guitar amplifiers. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers.
Consumer electronics or home electronics are electronic equipment intended for everyday use, typically in private homes. Consumer electronics include devices used for entertainment, communications and recreation. These products are usually referred to as black goods in American English, due to many products being housed in black or dark casings. This term is used to distinguish them from "white goods", which are meant for housekeeping tasks, such as washing machines and refrigerators. In British English, they are often called brown goods by producers and sellers. In the 2010s, this distinction is absent in large big box consumer electronics stores, which sell entertainment, communication and home office devices, light fixtures and appliances, including the bathroom type.
The Williamson amplifier is a four-stage, push-pull, Class A triode-output valve audio power amplifier designed by D. T. N. Williamson during World War II. The original circuit, published in 1947 and addressed to the worldwide do it yourself community, set the standard of high fidelity sound reproduction and served as a benchmark or reference amplifier design throughout the 1950s. The original circuit was copied by hundreds of thousands amateurs worldwide. It was an absolute favourite on the DIY scene of the 1950s, and in the beginning of the decade also dominated British and North American markets for factory-assembled amplifiers.
Kenwood is a Japanese brand for consumer electronics. Since October 2011, Kenwood has been owned by JVCKenwood as a result of a merger between Kenwood Corporation and JVC. Kenwood manufactures audio equipment such as AM/FM stereo receivers, cassette tape decks/recorders, amateur radio (ham) equipment, radios, cellular phones, speakers, and other consumer electronics.
Allen Boothroyd M Des RCA, FSCD, FRSA (1943–2020) was a British industrial designer of consumer electronics, best known for the Lecson amplifiers, BBC Microcomputer and co-founder of Meridian Audio.
Celestion is a British designer and exporter of professional loudspeakers.
Dynaco was an American hi-fi audio system manufacturer popular in the 1960s and 1970s for its wide range of affordable, yet high quality audio components. Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, it's best known product was the ST-70 tube stereo amplifier. They also manufactured other tube and solid state amplifiers, preamplifiers, radio tuners and bookshelf loudspeakers. Dynaco was liquidated in 1980, and the trademark is now owned by Radial Engineering Ltd.
Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording.
QUAD Electroacoustics is a British manufacturer of hi-fi equipment, based Huntingdon, England. QUAD is part of the IAG Group, with corporate headquarters located in Shenzhen, China.
Infinity Systems is an American manufacturer of loudspeakers founded in Los Angeles in 1968 and headquartered in Stamford, Connecticut. Since 1983, Infinity has been part of Harman International Industries, which became a subsidiary of Samsung Electronics in 2017.
Harman International Industries, Inc., commonly known as Harman, is an American audio electronics company. Since 2017, the company has been operating as an independent subsidiary of Samsung Electronics.
Studio monitors are loudspeakers in speaker enclosures specifically designed for professional audio production applications, such as recording studios, filmmaking, television studios, radio studios and project or home studios, where accurate audio reproduction is crucial. Among audio engineers, the term monitor implies that the speaker is designed to produce relatively flat (linear) phase and frequency responses. In other words, it exhibits minimal emphasis or de-emphasis of particular frequencies, the loudspeaker gives an accurate reproduction of the tonal qualities of the source audio, and there will be no relative phase shift of particular frequencies—meaning no distortion in sound-stage perspective for stereo recordings. Beyond stereo sound-stage requirements, a linear phase response helps impulse response remain true to source without encountering "smearing". An unqualified reference to a monitor often refers to a near-field design. This is a speaker small enough to sit on a stand or desk in proximity to the listener, so that most of the sound that the listener hears is coming directly from the speaker, rather than reflecting off walls and ceilings. Monitor speakers may include more than one type of driver or, for monitoring low-frequency sounds, such as bass drum, additional subwoofer cabinets may be used.
Ei Niš or Electronics Industry Niš, is a holding company with headquarters in Niš, Serbia. The company has operated from 1948 until it declared bankruptcy in 2016.
Ultra Electronics Holdings is a British defence and security company. It was listed on the London Stock Exchange and was a constituent of the FTSE 250 Index until it was acquired by Cobham, which is itself owned by Advent International.
Radford Electronics is a British audio manufacturer from Bristol, founded by Arthur Hedley Radford (G6YA) in 1946. Radford's hi-fi amplifiers enjoyed a reputation for quality that was "second to none", especially because of their output transformers.
Crown International, or Crown Audio, is an American manufacturer of audio electronics, and is a subsidiary of Harman International Industries, which has been part of South Korea-based Samsung Electronics since 2017. Today, the company is known primarily for its power amplifiers, but has also manufactured microphones, loudspeakers, and a line of commercial audio products, as well as digital audio networking products.
Electronics World is a technical magazine published by Datateam Business Media Ltd that covers electronics and RF engineering and is aimed at professional design engineers. It is produced monthly in print and digital formats.
Gilbert Arthur Briggs, commonly referred to as "G. A. Briggs", founded Wharfedale Wireless Works in Yorkshire, England, in 1932, and was a leading figure in the early development of high fidelity loudspeakers introducing such basics as the two-way loudspeaker and the ceramic magnet, as well as writing some famous books on audio and loudspeakers. Britain was at the forefront of developments in radio, audio and television, and Wharfedale is still known as a manufacturer of loudspeakers, although the company was sold in 1958 to The Rank Group and in the early 1990s to Verity Group PLC.
The NAD 3020 is a stereo integrated amplifier by NAD Electronics, considered to be one of the most important components in the history of high fidelity audio. Launched in 1978, this highly affordable product delivered a good quality sound, which acquired a reputation as an audiophile amplifier of exceptional value. By 1998, the NAD 3020 had become the most well known and best-selling audio amplifier in history.
