Audio Database

The

SANSUI AU-alpha 505RX
50,000yen(September, 1997 release)

Description
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The Integrated Amplifier which carries the newly developed audio element in an output stage.

In the conventional case, the temperature detection and the corrective network performed to the power transistor by external, the time loss from which heat is transmitted by this arose, and the operating point was swinging. The gap of an amplification factor to a music signal occurred by this, and it had become a distorted cause especially at the time of a small signal.
However, newly developed audio element Service Advertisement Protocol (transistor containing temperature-compensation functional) that built the temperature detection and the corrective network in the output stage was carried, and the dynamic behavior to which the operating point follows the strength of a music signal dynamically is acquired by performing temperature compensation in real time mostly.
Since a distortion is not changed by an output, the nakedness property in the sound volume in small - is stable.

By arranging a transmit and an amplifying circuit with a sufficient balance, disorder of the signal in a circuitry etc. has reduced various ill effects which it has on a tone quality.

In order to realize a purer music play, the Source Direct which shortest-izes signal channels of communication is adopted.

37 key unified remote control is equipped standardly and the operationality is improved.


Rating of a mode
Effective output 80W+80W (both channel operation, 20Hz - 20kHz, 8ohm)
THD 0.04% or less (at 20Hz - 20kHz, the time of an Output power 8ohm)
Input sensitivity/input impedance
(1kHz)
Phono(man-month): 3.3mV / 47kohm
compact disk, tuner, Line, Tape1, 2:200mV / 47kohm
Maximum permissible input Phono(man-month): 100mV (1kHz, THD: 0.1%)
Frequency characteristic Phono(man-month): 20Hz-20kHz}0.5dB
compact disk, tuner, Line, Tape1, 2:10Hz-70k+0dB, -3dB
SN ratio (A network)
Short circuit
Phono(man-month): More than 75dB
compact disk, tuner, Line, Tape1, 2:102dB or more
Tone control The Bass maximum variation: }8dB (50Hz)
The Treble maximum variation: }8dB (10kHz)
Loudness (Volume-30dB) +9dB(50Hz)
+6dB(10kHz)
Power dissipation 190W
Non-signal power consumption 22W
It is power consumption at the time of a standby. 12W
Dimensions Width 430x height 143x depth of 351mm
Weight 10.2kg