Sansui AU 519 Service Manual

Page 1

SPECIFICATIONS
Power output
Min. RMS, both channels driven, from 10 to 20,000 Hz,
with no more than 0.008 % total harmonic distortion.
70 watts per channel into 8 ohms
Load impedance . . . . 80hms
Total harmonic distortion (POWER AMP IN)
............ less than 0.008 % at or below
rated min. RMS power output
Intermodulation distortion (70 Hz : 7 kHz = 4:l SMPTE
method) (POWER AMP IN)
............ less than 0.008 % at or below
INTEGRATED STEREO AMPLIFIER

Rise time ........ 0.5 uscc
Slew rate ........ 160 V/usec

Frequency response (at 1 watt) (POWER AMP IN)
- ............ DC to 400,001 40 d8 3 dB
Damping factor (1 kHz, both channels driven)

............ 100 into 8 ohms
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-i,2 . . . . 2.5 mV/47 kilohms
(Max. input capability; 300 mV at 1 kHz, less than
0.01 % total harmonic distortion)
AUX, TUNER, TAPE PLAY
........... 150 mV/47 kilohms

POWER AMP lN . . 1 V/47 kilohms
Output level and impedance (1,000 Hz)
TAPE REC ...... 150 mV into 47 kilohms/600 ohms
PREAMP OUT . . . l V into 47 kilohms/400 ohms
Channel separation (1 kHz, at rated power output)
PHONO-I,2 .. . . 70 dB
AUX, TUNER, TAPE PLAY
........... 75 dB
Hum and noise (short-circuit, A-network)
PHONO-1,2 .... 88 dB
AUX, TUNER, TAPE PLAY
........... 100 dB
Controls
BASS ........ 210 dB (50 Hz)
TREBLE ...... 110 dB (15 kHz)
SUBSONIC ..... -3 dB (16 Hz),6dB/oct

LOUDNESS (VOLUME control: -30 dB position)
........... 10 dB at 50 Hz
8 dB at 10 kHz
Power requirements
Power voltage . . . . 100, 120, 220,240 V (50/60 Hz)
For U.S.A. & Canada
.......... 120 V (60 Hz)
Power consumption
Maximum consumption
.......... 580 watts
Rated consumption
.......... 360 watts 440 VA
Dimensions ....... 430 mm (16.15/16) W
168 mm (6-5/8") H
390 mm (15-3/8") D

Weight .......... 15.6 kg (34.4 lbs) net
18.0 kg (39.7 lbs) packed
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Design and specifications subject to changes without
notice for improvements.
In order to simplify the explanation illustrations may

SANSUI ELECTRIC CO., LTD. sometimes differ from the originals.

Page 2

1. BLOCK DIAGRAM

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2. ADJ USTM ENTS
Notes: 1. Mastar Volume ............. Minimum 3. When replacing some parts or circuit board, refer to
2. Room Temperature .......... 18°C ~ 28°C ; description in REMARKS.
(65°F ~ 83°F) 4. For this adjustment, run the unit for more than 3
minutes after the power is switched ON.
2-1. Driver Circmt Adjustment (See Fig. 2-1.2-3) ,, Perform after removing bonnet.
STEP SUBJECT MEASURE OUTPUT ADJUST ADJUST FOR REMARKS
i DC 0V Adj. Speaker terminal . VROI DC 0V :5 mV Before turning 0N power switch, set
L-CH F-2926 VROI to center position.
2 DC 0V Adj. Speaker terminal VROI
R-CH F-2927
3 Bias current Between emitters of power VR02 DC 20 mv :1 mV 0 Before turning ON power switch,
Adj. transistors, TR701, & TR703 F-2926 turn VR02 fully counterclockwise.
L-CH (between T.P Pin in Fig. 2-1) This bias current adjustment con-
verts current value into voltage
4 Bias current Between emitters of power VR02 by Ohms law.
Adj. transistors, TR702 & TR704 F-2927
R-CH (between T.P Pin in Fig. 2-1)