Audio Database

The

SANSUI AU-222
28,700yen(June, 1968 release)

Description
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The all silicon transistor Integrated Amplifier which adopted the same silicon power transistor as AU-555.

The low-noise silicon transistor sorted out by especially the equalizer circuitry has adopted the silicon transistor as a whole page including using the epitaxial silicon transistor for a power transistor.
For this reason, the interval has taken the large dynamic range as there are few distortion at the time of a low power output and S/Ns and they are the Oide power.

The SEPP-ITL-OTL scheme of a complimentary darlington circuit is adopted as the circuit system of a power amplifier part.
All the amplifying circuits from the first rank to the final output stage consist of NF amplifier.

The power limiter scheme with which the signal more than the drive voltage which the maximum output takes is not added to a power transistor, and the immediate judgment fuse are used for a protection network.

Two Phono input terminals serve as a design which differs in an impedance by Phono1 and Phono2, and can be properly used by liking of a specification append resistor of a cartridge and a tone.

The power transformer for transistor amplifier which demonstrated the transformer technology of the SANSUI and was designed is adopted as a transformer.

Accessories circuitries, such as a high filter, a low filter, a loudness control, a DIN connector, a tapes monitor circuitry, and a headset jack, are carried.


Rating of a mode
Form Solid-state Integrated Amplifier
Output power
Music power : 40W}1dB (4ohm)
46W}1dB (8ohm)
Output power : 16W+16W}1dB (4ohm)
18W+18W}1dB (8ohm)
THD 0.8% or less
Cross modulation distortion (60Hz:7kHz=4:1) 0.8% or less
Power Band Width (IHF) 20Hz - 20000Hz (8ohm)
Frequency characteristic 20Hz-30kHz}1dB
Channel separation 50dB or more
Output load impedance 4ohm-16ohm
Dumping factor 20 (8ohm) or more
A hum and a noise (IHF) Remains noise: 80dB or more
Phono: 60dB or more
AUX: 65dB or more
Input sensitivity/impedance (Output power) Phono1:2mV}3dB /, 47kohm
Phono2:2mV}3dB /, 100kohm
Tape Head(19 cm/s): 1.5mV / 200kohm
AUX1, 2:150mV}3dB/100kohm
Tape Monitor: 150mV}3dB/40kohm
Sound-recording output Pin:150mV
Din:30mV
Tone control Bass: 50Hz, }10dB
Treble: 10kHz, +12dB--14dB
Loudness control (Volume-30dB) 50Hz : +8dB, 10kHz : +3dB
A low filter 50Hz:-10dB
A high filter 15kHz:-11dB
The semiconductor used Transistor: 18 pieces
Diode: Six pieces
Supply voltage AC100V/117V/220V/240V, 50Hz/60Hz
Power consumption 100VA (at the time of the maximum output)
Dimensions Width 292x height 111x depth of 267mm
Weight 5.8kg