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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 very high power transmitters, such as 10 kilowatts and above, multiple IPAs are combined to provide enough drive for the final. An exciter, an even lower power transmitter, provides a similar service to the IPA by driving it; although an exciter usually encompasses other important functions, such as choosing the frequency of the RF.
By 1978, BGW amplifiers were installed in greater numbers in discothèques than any other amplifier. Original BGW logo. Wachner co-wrote a paper for the Audio Engineering Society (AES) in 1975, addressing the problem of differing power claims in the amplifier industry and the hope that power rating standards set by the Federal Trade Commission ...
Some two channel amplifiers, or stereo amplifiers, have the built in facility to operate in bridge mode by operating a switch and observing the input and output connections detailed on the back panel or in the manual. This option is most often found in high power PA equipment or amplifiers designed for car audio applications.
A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s.
The Doherty amplifier is a modified class B radio frequency amplifier invented by William H. Doherty of Bell Telephone Laboratories Inc in 1936. Whereas conventional class B amplifiers can clip on high input-signal levels, the Doherty power amplifier can accommodate signals with high peak-to-average power ratios by using two amplifier circuits within the one overall amplifier to accommodate ...
The Crown DC300, introduced in 1967, helped define the era of modern power amplifiers [5] In 1959, Crown began making standalone tube power amplifiers. By 1963, solid state electronics development allowed Crown to produce a more robust tape recorder, and in 1964, their first solid state power amplifier: the low-profile SA 20-20. [2]
Apart from manufacturing 'problem-solver' audio products such as the RaxX expandable 19" rack-mounting system, MTR distributes the Dutch stageClix digital wireless system for guitars, basses, microphones etc., Mcgregor UK-made mixer-amplifiers, power amplifiers, speakers, karaoke systems, the Californian A-Designs boutique audio products ...