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bg6service manual download site
2, power reserve and ability to withstand overloadbg6service manual download site
High fidelity amplifier dynamic range of 120dB, so as to meet the needs of sound from the minor to the peak of orgasm, the amplifier output is not clipped, so the amplifier has enough power reserves. If the dynamic range of the audio voltage is 3:1, by the power and the voltage is proportional to the square, so the power dynamic range is the 9:1. This means that power is 90W power amplifier, to achieve high-fidelity playback can only be up to 10W. Therefore, the transistor amplifier needs to have a large power reserve, blasting not only occur once contained, its near-vertical distortion straight up, which can damage the transistors. Vacuum tube amplifiers and strong overload capacity than transistor amplifiers. In case of overload, the music signal peak just became bigger than the normal wave slide, sound, how much worse. And transistor amplifiers, it appears clipped, sound quality significantly worse.bg6service manual download site
3, open-loop transient characteristics of indicators andbg6service manual download site
Tube amp the open loop index is superior to transistors, negative feedback without depth, without phase compensation capacitor can work steadily, so the dynamic index is superior to transistor amplifiers. Open-loop gain of the transistor amplifier (without a negative amount of gain before feedback) tend to be quite large, it's fine to electro-acoustic indicators, is relying on adding large amounts of negative feedback to achieve, in order to suppress parasitic oscillation, in transistor amplifiers often lag compensation, which raises the apparent transient intermodulation distortion, seriously affect the sound quality.bg6service manual download site
bg6service manual download site
4, efficiency, long life and costbg6service manual download site
Vacuum tube amplifiers in terms of weight, efficiency and life than a transistor amplifier is not dominant. Tube life is low, some technical indicators declined significantly after one thousand or two thousand hours of use. Transistors and integrated circuits are much longer service life. In addition, it tube amplifiers power consumption high, and often work in category a status also reduces efficiency, but there is no transient base, switch the distortion and intermodulation distortion crossover distortion and other harmful factors of quality. On the cost side, the amplifiers of the same grade, it tube amplifier generally higher transistor amplifier. Mainly due to the high cost of vacuum tubes, the output transformer, and tube amplifiers, production is not easy to automate, and low production efficiency. It's expecially evident in developed countries.
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