|Kensonic Accuphase C-200
|155,000 yen(August, 1973 release)
Control amplifier put on the market as the first phase of Accuphase series. The
company name of those days was a Kensonic.
An equalizer circuit improves
the nakedness characteristic before applying NFB (negative return) by the
perfect push pull drive of a whole page direct connection system, and
constitutes the high magnification circuit of fidelity.
Moreover, Class A
drive pure complimentary was adopted as the final stage of an equalizer that it
should correspond to the incoming signal of the large dynamic range, and high
allowable input voltage is secured by adoption of a plus-or-minus 2 power-source
Furthermore, massive [ on music appreciation ] was thought as
important and the low enhancement circuit is adopted.
When lowering the
cartridge in which an output is extremely large to a correct level or carrying
out the comparison audition of a cartridge using two lines, DISC1 and DISC2, the
Attenuator which can carry out 10dB continuation variable so that each level can
be united is prepared.
Furthermore, the input impedance changeover switch is
prepared in DISC1, and three kinds, 47kohm, 30kohm, and 20kohm, can be
Moreover, the Subsonic Filter of 25Hz cutoff is prepared as an
object for disc playback.
Right-and-left independent type tone control
is carried, and the change of turnover frequency is possible at 200Hz, 400Hz,
2.5kHz, and 5kHz with low-pitched sound and each loud sound.
characteristic is ±10dB with the rotary switch of 11 contacts.
For the purpose of cutting a subsonic noise, the low filter of 30Hzor less
12 dB/oct is carrie
Moreover, in order to cut hysteresis noise, such as a
tape, the high filter of 5kHz and 12 dB/oct is also carried.
and output of a tape are carried so that three tape recorders can be connected.
Mutual dubbing of this inner 2 set is possible, and while making Koppies
Izzi become independent and hearing sauce, dubbing between tape recorders in the
state where it completely became independent is possible.
The exclusive amplifier of pure complimentary direct connection is carried only in headphone, and the sound quality of headphone is raised.
All the magnification
stages are supplied from the power source made to constant-voltage-ize
completely, and stability is raised.
When power amplifier is set to the
place which is not accessible, the speaker changeover switch carried in the
front panel can use an optional exclusive relay box, and can change a speaker
||Accuphase stereo control amplifier
||High-level input: 20Hz - 20000Hz, and +0
DISC and a Media-Interface-Connector input: 20Hz - 20000Hz, ±0.2dB
||0.05% or less (for 20Hz - 20000Hz and by
|Input sensitivity/input impedance
||DISC1:2-6mV/20kohm, 30kohm, 47kohm
AUX1, 2, Front:200mV/130kohm
Tape Play1, 2,
|An Output power/Output load impedance
||Main Output: 2.0V/200 ohm
0.4V/0.3 ohm (in volume control maximum and the rated input)
Output1, 2, Front: 200mV/200 ohms (at the time of a DISC input)
||More than 10V (distortion 0.05%)
|The disc maximum input
||400mV - 1.2Vrms (1kHz, 0.05% of distortion)
* 400mV is the DISC level-control maximum (equalizer gain 40dB).
is the DISC level-control minimum (equalizer gain 30dB).
||Tuner, AUX, and a Tape Play input
DISC1, 2, and a Media Interface
||Tape Rec Output:
||Tape Rec Output:
|S/N (an Output power, volume control
||Tuner, AUX, Tape Play: 90dB or more (rated
DISC, Media Interface Connector: 74dB or more (10mV input)
|Volume control linkage error
||Less than 1dB
||Changing point 400Hz :
|High region :
||Changing point 2.5kHz :
|DISC low enhancement (massive compensation
||They are 0dB, +0.5dB, and +1dB (100Hz) to
the RIAA standard characteristic.
|Compensation (volume control-30dB)
||DISC Subsonic Filter: 25Hz, 6 dB/oct
low filter: 30Hz, 12 dB/oct
A high filter: 5kHz, 12 dB/oct
|The semiconductor used
||100V, 117V, 220V, 240V, 50Hz/60Hz
||Width 445x height 152x depth of 355mm