|118,000yen(around the 1985 time)
The Integrated Amplifier developed as a triangle
drive system aiming at the improvement in the total balance of amplifier.
In order to strengthen a power-source part, the large-sized power transformer which became independent to each of Lch and Rch of power amplifier is adopted, and power is supplied to each output stage and the voltage amplification stage from two transformers.
Furthermore, a transformer for
exclusive use is arranged also on the power-source part of an equalizer
amplifier, and it has become the extravagant design of supplying an electric
current to Lch and Rch.
It not only separates a power transformer, but
it is pursuing the ideal of separate amplifier to the construction itself,Not
only a power transformer but a rectifier circuit and a power source capacitor
adopt the thing only for Lch and Rch completely, and also a power amplifier part
separates completely the layout of each part article, a product line, a
radiator, etc., etc., and puts its heart and soul into a monophonic stream
composition, such as keeping a signal from crossing etc. There is no cross
interferencee on either side by this, the occurrence of cross modulation
distortion was suppressed, and the high separation is realized.
obtaining the outstanding resolution and transparent feeling by adoption of the
line straight circuitry which jumps a tone control and the mode etc., the
capacity of the source like compact disk is demonstrated.
In order to
correspond also to a variation of the rapid impedance of the digital source with
an intense peek component, a large capacity power supply capacitor called 20,000
micro F of one side channels is adopted as the power-source part of LchRch.
Furthermore, the current-supply-source capacity 32A which exists also two to
3 times of the usual amplifier is attained, such as carrying out 3 parallel
connection of the power transistor per one side channel, and making it a triple
Switching distortion carries the non switching circuit TypeII
which improved further the non switching circuit which is not generated
theoretically, expands the area of switching distorted zero further, and is
attaining much more wide band-ization.
Moreover, immediately after
power-switch ON and at the time of the Taishin number input, the idle current
which is carrying out the drift continuously by transition of outside
temperature etc. is stabilized, and the occurrence of the thermal distortion
resulting from this is suppressed.
Furthermore, the nonlinear distortion of
an output stage is raised to abbreviation 1/30 by detecting and rectifying the
difference of an input signal and an output signal.
carried out also to part each and a copper lead wire is adopted as main
component partses, such as a capacitor and a resistor. Moreover, the
oxygen-free-high-conductivity-copper line was adopted also as main product-line
material and a very-thick power cord, and also thorough nonmagnetic-ization,
such as performing nonmagnetic tinning also to an input/output terminal, is
Furthermore, a speaker terminal adopts the vice type which sticks a cable by pressure firmly, and is performing the current supply source without a loss. Moreover, technical pursuit and the thorough audition are repeated until dividing a grounding point into a power supply system and a signal system etc. results in a detail.
The hybrid MC transformer is
adopted and the high region property is sharply raised by reducing a boost ratio
Thereby, it excelled in the phase response, and DCR (direct current
resistance) is also low and the gentle low-pass play whose dyne ping was
effective is realized.
Two impedance values are also established and the
matching with various cartridges is enabled.
An input terminal is considered as those with five line, and the product
line of especially the shortest in circuitry in the position of compact
disk, and serves as a specification of digital priority, such as using
a quality part.
Furthermore, two tapes monitors have also equipped, it is total and seven
input/outputs are supported.
The sub- wood of the photograph was an
||Non switching Integrated Amplifier
|20Hz - 20kHz :
||150W+150W (6 ohm, both channel drive)
120W+120W (8 ohm, both channel drive)
||200W+200W (4 ohm, both channel drive)
160W+160W (6 ohm, both channel drive)
130W+130W (8 ohm, both channel drive)
|THD (20Hz - 20kHz)
||0.003% (at the time of an effective output)
|Cross modulation distortion (50Hz:7kHz=4:1)
||0.003% (20Hz - 20kHz, 120W, 8ohm)
||5Hz - 60kHz (IHF, both channel drive, THD0.01%)
||Speaker(4ohm-16ohm): A, B, A+B
||100 (20Hz - 20kHz, 8ohm)
||Phono man month: 2.5mV / 50kohm
MC: 0.15mV/3 ohm, 0.25mV/40 ohms
compact disk, Tuner, AUX, Tape Play1,
2:150mV / 30kohm
|Phono maximum permissible input (1kHz,
||Phono man month: 20Hz-20kHz}0.2dB
compact disk, Tuner, AUX, and Tape Play:2Hz-100kHz+0 -3 dB
(IHF, A network, a short
disk, Tuner, AUX, Tape Play: 110dB
||Bass: }8dB (100Hz)
Treble: }8dB (10kHz)
||Low: 15Hz, 6 dB/oct.
|Power consumption (Electrical Appliance and
Material Control Law)
||Width 420x height 151x depth of 427mm
||Sub- wood JA-A120 (4,000yen)