The Integrated Amplifier put on the market as the
orthodox school of stereo amplifier.
7189 is adopted as an output tube and it is made to operate by AB1P.P. (fixed-bias scheme).
Moreover, a multiplex feedback circuit (the amount of total NF of 26dB)
is taken in for the first time in this class in Japan, and the Low-noise-izing
covering all the bands is attained.
A noise and distortion are
suppressed by using a three-step amplifying circuit for a control amplifier
part, and storing all the circuitries in NF loop further.
The transistor circuit index number S= 4, the transistor-noise index number
NF = 4 transistor head amplifier original with SANSUI of 2dB is adopted.
The tone control
circuit is making treble become independent of a bass for right-and-left each
channel of every.
Moreover, the flat property that neither a surge nor a
gain fall is is acquired for with a tone defeat (tone circuitry cancellation
The blend circuitry which can control a spread is carried.
Even a stereo can adjust a spread of sound freely from a monophonic
recording as the thumb is turned to the right.
The center channel
output-terminal is carried and a 3 yuan solid play is possible.
output level meter which can be switched to three steps, 5W, 10W, and 15W, is
||Tube Integrated Amplifier
|<Power amplifier part>
||0.15% or less (1kHz)
0.95% or less (36Hz)
|Cross modulation distortion
||0.85% or less (15W, 50Hz+5kHz)
||Less than 10Hz-80kHz}1dB
|Output load impedance
|Gain (output 20 W:00)
|An attached circuitry
Turnover : 150Hz
low filter: 50Hz-12.5dB
A high filter: 10kHz-13.5dB
Tape recorder sound-recording / play connector
The termination for center channel amplifier
(three-step switching of 5W, 10W, and 25W)
|The semiconductor used
Transistor (2SB-381): Four pieces
|Thermionic tube (nine pieces)
Germanium diode (OA-81): Two pieces
(subset-dependency-1A): Two pieces
Selenium rectifier (TC.0.2P11/3): One
||AC100V, 117V and 240V, 50Hz/60Hz
||Width 405x height 142x depth of 320mm