Pioneer M-73
75,000yen(around the 1980 time)
Description
Stereo power amplifier which adopted 2 power transformers.
The 2 steps of ±2 powering and differentials amplification current mirror circuitry and the final-stage parallel push pull pure complementary circuit are adopted as a circuit system.
A power-source part is adoption of 2 power transformers which improve a dynamic behavior, and has eliminated the cross interferencee between channels.
Moreover, with a stream composition with the capacitor of 12,000 micro Fx4, even if there is a low-pass continuous sound of a large swing, it reproduces with a margin.
The large-sized peek power meter with a logarithmic comression circuitry which can carry out the Direct reading of the output is equipped.
The protection network constituted from a quick electronic circuitry of a reliable power relay and a response is adopted, and a speaker and a transistor are protected from an emergency outage.
Two speaker output-terminals are carried and a play of A+B is also possible.
It is the panel design which can be mounted on EIA specification rack.
Tidak ada komentar:
Posting Komentar