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The second amplifier released was the Phase Linear 400 with 200 watts per channel. It shared the same distinctive brushed aluminum, dual VU meters front panel style as the 700. It retailed for just under $500. [1] The next product was the Phase Linear 4000 Series Auto-correlation Pre-Amplifier introduced in 1973 and manufactured through 1978.
In October 1949 – January 1950 and May 1952 Williamson published a series of articles on matching preamplifier stages and brief "Replies to Queries" concerning assembly and testing. [40] A collection of articles published by Williamson in 1947–1950 was printed as a standalone 36-page brochure in 1952, [ 41 ] with a second edition in 1953 ...
Jensen is a consumer electronics brand with a history that dates back to 1915 with Peter L. Jensen's invention of the first loudspeaker. Over the years the Jensen family of brands has grown to include Jensen, Advent, Acoustic Research (AR), Phase Linear and NHT Loudspeakers (Now Hear This) in the United States and Magnat and Macaudio in Germany.
He is known for designing the Phase Linear 700, at 350 W per channel the most powerful consumer audio amplifier available in 1972. He went on to found the Carver Corporation in 1979, Sunfire in 1994, and the Bob Carver LLC in 2011 [ 2 ] which was sold to Jade Design in June, 2013. [ 3 ]
The noise voltage density of a given valve is a function of frequency. At frequencies above 10 kHz or so, it is basically constant ("white noise"). White noise is often expressed by an equivalent noise resistance, which is defined as the resistance which produces the same voltage noise as present at the valve input.
[1] [2] Both circuits drawn to underscore the bridged topology of push-pull operation The diamond buffer or diamond follower is a four-transistor, two-stage, push-pull , translinear emitter follower , or less commonly source follower , in which the input transistors are folded, or placed upside-down with respect to the output transistors. [ 3 ]
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This line is intended for use with 2-wire circuits. Fig. 2. Balanced line in star quad format. This line is intended for use with 4-wire circuits or two 2-wire circuits. It is also used with microphone signals in professional audio. Fig. 3. Balanced line in DM quad format. This line is intended for use with 4-wire circuits or two 2-wire ...