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| Aurex SC-55 |
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| 108,000 yen(an age -- unknown) |
The "three-step Darlington whole page direct connection pure complimentary
OCL circuit" of two steps of differential which had cascade connection
in the first rank is adopted.
The nakedness profit in high region frequency is raised by adopting
the differential driver circuit which makes the condenser of phase compensation
small just before a limit, and changes from emitter grounding to a common base
in a high region.
The power-source part became independent of a power
transformer right and left completely by L and R each channel, and two sets of
monophonic amplifier has stored it in one cabinet.
Therefore, stability is increased by fully improving the separation characteristic
and also separating the signal of an output stage.
To the capacitor of the power source, it adopts as each two channels at
a time an electrolytic condenser low magnification type [ 10000-micro F
] (what reduced etching of the aluminum foil of an anode and carried out
the fall of impedance), and stabilization is attained.
Moreover, the metallized polyester film capacitor was used for the
electrolytic condenser in parallel, and the high region characteristic is
improved.
While establishing a constant voltage circuit in each circuit
to a driver stage and attaining stabilization of operation, the signal to noise
ratio and a distortion are improved.
A speaker and amplifier are
protected from an emergency accident in the electronic of seven transistors and
9 diode composition, and the combination of a high relay of a response.
The
clicking noise at the time of power-source ON/OFF is prevented simultaneously in
the circuit which used together middle point electric-potential detection and
unusual voltage detection.
The high precision Attenuator type thing of
metal tunic type is adopted as the volume for volume control.
The switch
which can raise usual Input sensitivity 1V to 0.5V is formed.
It is
convenient when driving direct with the output from equalizer amplifier.
A sensitivity rise of 6dB is possible in the system which changes the amount
of NF of the first rank.
The speaker change of two series is possible.
The meter detecting terminal is installed in a speaker terminal and
parallel, and an Output voltage can be checked by connecting an optional peak
meter unit (PM-55).
The data sheet by CADIS is attached.
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.JPG)
| Form |
Stereo power amplifier |
| Circuit system |
First rank cascade connection Two steps of differential
Whole page direct connection OCL circuit |
| Specification semiconductor |
Transistor x38, diode x16 |
| Effective output (20Hz - 20000Hz)
|
60W+60W (0.05% distortion, 8ohms)
85W+85W (0.05%
distortion, 4ohms) |
| THD (20Hz - 20000Hz) |
| At the time of an effective output :
|
0.05% |
| At the time of 30W output : |
0.02% |
| At the time of 1W output : |
0.05% |
| It is 1kHz at the 30W output time. :
|
0.005% |
| It is 50kHz at the 30W output time. :
|
0.03% |
|
| Output zone (IHF, 2ch) |
5Hz - 80000Hz (distorted 0.1%) |
| Frequency response (at the time of 1W
output) |
5Hz-100000Hz+0dB-3dB |
| Input sensitivity/impedance |
1.0V/50kohm (being a switch 6dB up) |
| Dumping factor (8ohms) |
50 or more |
| S/N ratio (IHF A network) |
105dB or more |
| Remains noise |
0.3mV |
| Separation |
65dB(10kHz)
80dB(1kHz) |
| Power source |
AC100V 50Hz/60Hz |
| Power consumption |
165W |
| Dimensions |
Width 450x height 93x depth of 375mm |
| Weight |
14kg |
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