|79,800yen(January, 1980 release)
The stereo Integrated Amplifier which adopted the
Duo beta circuitry.
The Duo beta circuitry original with a Lux is
adopted as equalizer amplifier and power amplifier.
A proper quantity of Duo beta circuitries consist of NFB and a DC servo.
First, TIM distortion was reduced by applying a proper quantity of NFB
based on the amplifier circuitry with the outstanding nakedness property,
and it has contributed to the tone quality of a mid-high range, or reappearance
of a feeling of an atmosphere. And in DC servo, the problem of the cross
modulation distortion and DC drift by a harmful super-low-pass component
was solved, and the braking effect of the speaker excellent in the concurrent
has been acquired.
of the equalizer by a Duo beta circuitry is realized, and not only man-month
cartridge but MC cartridge is connectable with an equalizer direct.
circuitry consists of a cascode difference input first rank circuitry with a
bootstrap by low-noise FET, and an output stage of Class-A single ended
push-pull-circuit adoption, and has composition which was excellent in the
Furthermore, since the high gain of the equalizer itself
can be taken, it has succeeded also in banishing the flat amplifier leading to a
(Although almost all MC cartridge can connect the Input sensitivity of
MC input terminal at 0.3mV, the using of the thing of a high-impedance
type as possible is recommended.)
For the output stage,
ft (high region cut-off frequency) was selecting carefully and using the
large-sized power transistor in which it is high and Cob (collector output
capacitance) is low, also accelerated the driver circuitry to it, and has
banished switching distortion to it.
Moreover, the newly developed loop type
heat pipe is adopted, and the heat-dissipation effect is heightened.
line straight stream composition is adopted and the faithful transmit is enabled
by having the stream composition which linked MC equalizer part and the power
amplifier part directly.
The LUX scheme NF type tone control is adopted
as a tone control.
Each 2 steps of height region change is possible also for
a turnover frequency, and a full it1 is also possible if a defeat location is
10 element right-and-left standalone version indicator which
displays peek power on real time is carried.
The watt window which can read
an output direct is adopted, and when unnecessary, it is also possible to turn
OFF with a switchpoint.
Two tapes monitors, a dubbing switchpoint and a
Subsonic Filter, and the high cut-off filter are carried.
|Succession effective output
||70W+70W (8 ohms, both channel operation, 20Hz - 20kHz)
||0.03% (8ohm, 70W, 20Hz - 20kHz)
|Cross modulation distortion
||0.03% (8ohm, 70W, 60Hz:7kHz=4:1)
||Phono man month, MC:20Hz-20kHz}0.3dB
Tuner, AUX: 10Hz - -100kHz one dB
||Phono man month: 1.2mV/50kohm
MC: 0.3mV/100 ohms
|SN ratio (IHF-A)
|A high cut-off filter
||switched: Two lines
unswitched: One line
||Width 466x height 145x depth of 333mm