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The amplifier can supply humongous current, massive output power, tremendous voltage, runs cool, and is efficient. 6) Only 12 output transistors are needed per channel for a peak-to-peak current of 240 amps. 7) Bias current and idling current issues become irrelevant and nonproblematic. 8) The Tracking Downconverter multiplies current in the ...
The company was known for the most powerful audio amplifiers of the era led by the Phase Linear D-500 introduced in 1978. It was a stereo power amplifier delivering 505 watts of clean (typically < 0.1% total harmonic distortion over 20 Hz–20 kHz) RMS power per channel. It had a retail price of $1395. Buyout
It used a high Q ferrite loopstick for tuning and a 2SA type germanium transistor as both RF amplifier and audio amplifier, Diode detector, recovered audio voltage acting as an AGC, audio output transformer. As transistor price and power usage declined and bandwidth increased the ball went back to superheterodyne designs.
The first phono equaliser amp made in Japan to feature germanium transistors, the PZ-11 was popular for its slim design. 1964 SQ-38D Vacuum Tube Integrated Amplifier. The SQ-38D is one of the first models to feature triodes and also the first of the "38Series" that eventually includes the SQ-38F, SQ-38FD and the current SQ-38S.
The Regency TR-1 circuitry was refined from the TI design, reducing the number of parts, including two more expensive transistors. Although this severely reduced audio output volume, it let I.D.E.A. keep the price down to $49.95, ($510 in 2021), which was a significant amount of money for such a small, untried object. [4]
E.H. Scott Radio Laboratories is sometimes confused with H.H. Scott. E.H. Scott was founded in 1925 by Chicago resident Ernest H. Scott. Its first product was the World's Record Super 8, a TRF (tuned radio frequency) design with typical harness wiring with 16 gauge silvered solid core copper wire employed in an array configuration that was typical to radios at the time. This construction ...
During the 1970s, the MC-2300 was an expensive piece of audio equipment, with a retail price of $1799 by the time of its discontinuation in 1980. [1] That being said, its outstanding power and sound production quality made it a valued part of many recording studios and although some people prefer the sound of tube amplifiers, the overall greater reliability and freedom from repair of the newer ...
The amplifier used low-frequency germanium transistors as pulse width modulators and switches and wrongly relied on the loudspeaker's inductance to filter the class D signal into audio. Most often this would short out the output transistors.
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