|69,800yen(around the 1990 time)
Integrated amplifier which set the Haar Monique time alignment technology on the nucleus, and pierced through the prejudice to a tone
The Haar Monique time alignment theory,It is what was taken up
from the front about the timing of fundamental tone and a distorted component, and an action of NFB, and was produced as the old result of research which
focused also on the property of the NFB itself by Steve Cali Son of the
Nakamichi U.S. research center.
In Amplifier2, the newly developed amplifier circuitry based on this theory
is adopted as both a preamplifier part and a power amplifier part. This
circuitry saves the amount of NFB of an audio inband uniformly by the wide
band and the open loop design of low gain, stopping the amount of NFB itself
slightly etc. crosses it to the band of all the audios, and the technique
of adjusting the phase of fundamental tone and a distorted component correctly
The line amplifier part is considered as the discrete
stream composition so that a high-quality sound device can be thrown in.
Thereby, with the stream composition by IC, the impossible high-definition
part can be used everywhere and the frequency characteristic of an open loop
gain is saved uniformly.
Moreover, the main volume by a motor drive, a motor
drive rotary selector, the electrolytic capacitor which thought the tone quality
as important, etc. are used.
The multi-regurated power supply scheme
which prevents the cross interferencee between each section involving a
power-source part and between stages is adopted.
Moreover, an isolated rate
grand scheme original with Nakamichi is adopted also as a grounding circuitry, and the noise interference to a signal system is suppressed.
gain equalizer amplifier of a transistor difference input is carried.
Simpler signal transmission is possible for the signal which carried
compact-disk direct input and was inputted from here by jumping a selector and a
balance volume and passing along a 4-unit volume for exclusive use.
tone control and the muting circuit are carried.
Volume control, an
input switching, and the remote control in which the compact disk player of
Nakamichi and an operation of the deck are possible are attached.
synchro Lec of the case where the system remote connection of the deck and the
Amplifier series corresponding to remote control, such as
CR-70/CR-50/CR-40/CR-30/CR-20/DRAGON, is performed, or CDPlayer2 is performedA
system remote connection with the 2nd set of signal converter rc-4 and
Casettedeck1/Casettedeck2/Nakamichi1000 to be used is performed.When performing
the system remote connection of SRC-2, and Nakamichi1000/1000IBM PCN
II/700/700IBM PCN II to be used, and an Amplifier series, required exclusive
cable SRC-3 etc. was an option.
|<Power amplifier part>
||50W+50W (8 ohms, both channel drive, 20Hz - 20kHz, 0.1%THD)
||10Hz - 50kHz
||5Hz-80kHz+0 -3 dB
|S/N day (IHF A-WTD, input short-circuit)
||0.1% or less (8 ohm, an Output power, 20Hz - 20kHz)
|Maximum output electric current
||18A peek (per one side channel)
||Phono man month: 2.5mV / 47kohm
MC: 0.125mV/100 ohms
compact disk, Tuner, Tape, Aux:150mV /, 20kohm
(at the time of 1kHz, Rec out, and
|Phono man month: 0.008% or less
MC: 0.01% or less
||Phono man month/MC: 30Hz-20kHz±0.5dB
(IHF A-WTD, speaker output)
||Bass: ±10dB (20Hz)
Treble: ±10dB (20kHz)
||A maximum of 370W
||Switched: Two lines, a maximum of 150W
||Width 430x height 125x depth of 360mm
||Remote signal converter rc-4
System remote connecting cable SRC-2 (1,200yen)
System remote connecting cable SRC-3 (1,500yen)
|Adjunct: Remote Control unit
Amplifier2 Remote Control
||Infrared pulse type
||Width 64x height 18x depth of 176mm
||About 140g (Battery included)