Sansui AU-X1 User Manual

SUPER I, Nl'EGRA TED AMPLIFIER
SANSDI AU-Xl
SANSUI ELECTRIC CO., LTD.
AU-X1
\
SPECIFICATIONS
Power output
Min. RMS, both channels dr
With no more tha~ 0.007 % t " ~rmonic distortion
160 watts per channel into 8 ohms
Load impedance . . . . 8 ohms .
Total harmonic distortion (POWER A},1P IN)
. . . . . . . .... less than 0.007 % at or below
rated min. RMS power output
Intermodulation distortion (70 Hz : 7 kHz = 4:1 SMPTE
method) (POWER AMP IN)
less than (j.007 % at or below
rated min :· .RMS power output
Risetime ...
0.5 .
. Slew rate
FreqlJ'ency response (at 1
RIAA curve deviation (PHONO, 20 Hz to 20 kHz)
.......... +0.2 dB> ... 0.2 dB
Input sensitivity'and impedance (·1 kHz, for rated power
output)
PHONO (MC) .... 0.1 mVt200 ohms
(Max. input capability: 40 mV at 1 kHz, le ss than
0.0 I % total harmonic distortion)
PHONO (MM) ... '2.5 mV/41 kilohms
(Max. input capability: 330
0.01 % total harmonic
AUX/TUNER, TUNER,
POWER AMP IN ., 1
Output level and impedance (1
TAPE REC . . 200 mV into 47 kilohms/
600 ohms
PREAMPOUT
1 V into ' 47 kilohms/
600 ohms
Channel separation (1 kHz, at rated power output)
PHONO (MC) .. . 70 dB
PHONO (MM) ... 75 dB
AUX/TUNER, TUNER, TAPE PL~ V y
. . . . . . . 80 dB
Hum and noise (short-circuit, A.n~tWork)
PHONO (MC) . . . . 76 dB . .•. ».
PHONO (MM) ... 91 dB;;; '
AUX/TUNER, TUNER, TAP£pLAY
........ 10QdB
Controls
SUBSONIC . . .
- 3 dB ( 16Hz), 6 dB/oct
J!JMP .. . .. . - 14dB
Power requirements
Power voltage .... 100,120,220,240 V (50/60 Hz)
Po~er consumption
Rated consumption
500 watts
Dimensions 480 mm (18-15/16") W
197 m '11 (Z:13/16") H
450 ,rnm ·3/4 H) D
27.7 k ' lbS) net
30.4 k ) packed
* Design and specifications 5U~,ect to c.hanges without
notice for improvements.

Sansui AU-X1 Specifications

General

Brand	Sansui
Model	AU-X1
Category	Amplifier
Language	English

Summary

Specifications

Block Diagram

High Speed Power Transistor Operation and Characteristics

High Speed Power Transistor Requirements

High Speed Transistor Configuration

Details the parallel connection of small signal transistors (LAPT) and ballast resistors for improved performance.

High Speed Transistor Characteristics and Benefits

Explains the relationship between switching time, fT, and hFE, and the benefits of high-speed transistors.

Parts Location and Lists

F-2781 Power Supply & Protector Circuit Board

Details the component layout and parts list for the F-2781 Power Supply & Protector circuit board.

Adjustments

F-2778 Power Supply Voltage Adjustment

Procedure for adjusting power supply voltages for the F-2778 circuit.

F-2775 Driver Circuit Adjustment

Procedure for adjusting DC offset and bias current for the F-2775 driver circuit.

F-2917, F-2918 MC Head Amp Adjustment

Procedure for adjusting DC offset for the F-2917 and F-2918 MC Head Amp circuits.

F-2770, F-2771 Equalizer Circuit Adjustment

Procedure for adjusting DC offset for the F-2770 and F-2771 Equalizer circuits.

F-2819 Flat Amp Circuit Adjustment

Procedure for adjusting DC offset for the F-2819 Flat Amp circuit.

Main Parts Replacement Procedures

Replacing F-2775 Driver Circuit Board

Step-by-step instructions for replacing the F-2775 driver circuit board.

Replacing Power Transistor