||* Build-to-order article
350,000yen(around the 1999 time)
Control amplifier which adopted VGCA.
order to correspond to the large dynamic range of a next-generation digital
format, the newly developed low-noise amplifier VGCA (Variable Gain Control
Amplifier) is adopted.
In VGCA, the scheme which changes not the amplifier
stream composition of amplifying after extracting a signal in the input volume
which was being performed with the conventional amplifier but the gain of
amplifier itself is adopted, and even when a volume is extracted, aggravation of
a noise or a dynamic range is reduced.
The high S/N ratio is gained by the
combined use with the battery driving power supply adopted as the power-source
part, and the remains noise has realized reappearance of little clear sound.
The battery driving power supply using the lead accumulator adopted also
as SU-C7000Ver.4.0 is adopted as a power-source part.
By carrying out a
battery drive, the signal circuit was completely separated from the AC power
source, and a noise loop, a switching noise of a power circuit, etc. resulting
from a connecting cord or an AC power source are canceled.
The powering of
about 4 hours is possible for this battery at a full condensation. Moreover, if
a remaining capacity decreases, it will switch to an AC power source automatically, and a condensation will be started.
The resistor rotation
type volume is adopted as a volume.
In this volume, the brush united with
the termination is fixed and the heterogeneous alloy-junction parts which become
the cause of degrading a tone quality, by adopting the original scheme which
rotates a resistor are reduced.
Moreover, fine-particle type carbon is
adopted as a resistor, and distortion is reduced.
electrolytic capacitor is adopted as a capacitor.
This capacitor made the electrolytic capacitor using the separator which
blended the bamboo upgrade further, and is reducing equivalent resistance
by an optimization of the combination rate of the bamboo fiber of a separator,
adoption of the thick aluminum foil of foil thickness, adoption of a special
etching construction method, etc.
R core transformer is adopted as a power transformer.
order that this transformer may serve as uniform magnetic flux because core
cross-section form is circular, and also there may be no joint in a core, there
is little leakage magnetic flux, and it is reducing the tone-quality failure.
THCB (technics hybrid construction base) is adopted as a chassis
structure, and the periodic-damping property excellent in
multilayer-structure-izing the material in which vibration suppression
properties differ has been acquired.
Two pre-out terminations are
carried and by amplifier is supported.
The glass epoxy group board with
which gilding was given is adopted.
The attachment-and-detachment type
power cord of 3P-2P type is adopted.
The XLR canon termination
corresponding to a balance input and a balance output is carried.
OCC wire rod is adopted as an internal wiring.
Real wood and last finish
are given to sub- wood.
|A compare of a block diagram
|THD (20Hz - 20kHz)
||Phono man month (Rec out, EIAJ): 0.003%
Line1/2, compact disk, Tape1 / 2 (Pre out, EIAJ):0.002%
disk, Tape of 1/2:112dB (EIAJ)
124dB (IHF A Gain = 0dB, S=2V)
||Line1/2, compact disk, and
Tape1/2:20Hz-20kHz+0 -0.1 dB
0.7Hz-125kHz+0 -3 dB
||Pre out1/2:2V/47 ohm
Balanced: 2V/47 ohm
||Phono man month: 3.5mV / 47kohm
compact disk and 1/2:200mV of Tape(s) / 47kohm
Balanced: 200mV/600 ohms
|Maximum permissible input
||Width 483x height 134x depth of 375mm
||13.8kg (battery power-source included)
||Battery driving power supply 2212X2 AU
(2x12V, 2.2Ah/20HR) of LC-R
(Replacement-parts treatment and build-to-order 2.5 months, 19,800yen)