Sansui G971 871DB Service Manual

Page 2

Specifications

AM section

Tuning range ...... 530 to 1,600 kHz

Usable sensitivity (bar antenna)
............ so dB/m (300 uV/rn)

Selectivity ........ 30 dB

Signal to noise ratio . . 50 dB

Distortion (at 30 96 Modulation, 80 dB/m)
............ less than 0.5 %

Others

Power requirements
Power voltage . . . . 100, I20, 220, 240 V
(SO/60 Hz)
For USA. and Canada
........... 120 V (60 Hz)
Power consumption
Rated consumption
600 watts 750 VA
Dimensions . ~ ...... 560 mm (22-1/16") W
201 mm (7-15/16") H
495 mm (19-1/2") D
Weight .......... 22.2 kg (48.9 lbs) net
24.8 kg (54.7 lbs) packed

eeeeeeeeeee

0 G-870008l871 DB
Audio section
Power output
Min. RMS, both channels driven, from 20 to 20,000 Hz with
no more than 0.025 96 total harmonic distortion.
160 watts per channel into 8 ohms

Load impedance . . . . 8 ohms
Total harmonic distortion

............ less than 0.025 96 at or below rated

min. RMS power output

lntermodulation distortion (70 Hz : 7 kHz = 4:1 SMPTE

method) ........ less than 0.025 96 at rated power
output
Rise time ........ 1.4 usec
Slew rate ........ 76 Vlusec

Frequency response (at 1 watt)
Overall (from TAPE/AUX)
............ 5 to 80,000 Hz
+0.2 dB, -2.0 dB

Power amplifier . . . DC to 200 kHz,
+0 dB, -3.0 dB
RIAA curve deviation (PHONO, 30 Hz to 20 kHz)
............ +0.2 dB, -0.2 dB
Damping factor (20 Hz to 20 kHz, both channels driven)
60 into 8 ohms
input sensitivity and impedance (at 1 kHz)
PHONO-I, 2 . 2.5 mV/47 kilohms
(Max. input capability: 250 mV at 1 kHz, less than
0.1 96total harmonic distortion)
MIC ......... 6 mV/IO kilohms
TAPEoI , 2 PLAY, TAPE/AUX
............ 150 mV/47 kllohms
Output level (at 1 kHz)
TAPE-1, 2 REC . . . 150 mV

Hum and noise (short-circuit, A-network)

PHONO-l, 2 . . . . 78 dB
TAPE-1, 2 PLAY, TAPE/AUX
............ 95 dB
Channel separation (at 1 kHz)
PHONO-l,2 . . . . 60 d8
TAPE-1, 2 PLAY, TAPE/AUX
............ 70 dB
Controls
BASS ........ :10 dB at 50 Hz
MIDRANGE . :5 dB at 1.5 kHz
TREBLE ...... thdB at 10 kHz
SUBSONIC FILTER
.......... -3 dB at 16 Hz (6 dB/oct)

HIGH FILTER . . . -3 dB at 3 kHz (6 dB/oct)
LOUDNESS (VOLUME control: -30 dB position)

............ 8 dB at 50 Hz
6 dB at 10 kHz
AUDIO MUTING . -20 d8
FM section
Tuning range ...... 88 to 108 MHz
Usable sensitivity
Mono lHF ...... 9.8 dBf (1.7 in!)
DIN ...... 1.0 V
Stereo IHF ..... 17 dBf
50 dB quieting sensitivity
Mono ........ 12.5 dBf
Stereo ........ 3S dBf
Signal to noise ratio (at 65 (181)
Mono ........ 82 dB
Stereo ........ 76 dB

Distortion (at 65 dBf)

Mono ........ less than 0.08 96 at 100 Hz
less than 0.07 96 at 1,000 Hz
less than 0.08 96 at 6,000 Hz

Stereo ........ less than 0.1 96 at 100 Hz

less than 0.1 96 at 1,000 Hz
less than 0.15 96 at 6,000 Hz
Alternate channel selectivity (at 400 kHz)

............ 70 d8
Dolby Noise Reduction Effect

............ 10 d8
Capture ratio ...... 1.0 dB
Image response ratio . . 90 dB
Spurious response ratio

............ 95 d8
IF response ratio . . .. 95 d8

40 dB at 100 Hz

45 dB at 1,000 Hz

35 dB at 10,000 Hz

30 d8 from 30 to 15,000 Hz
30 to 15,000 Hz

+0.2 d8, -1.0 dB

Antenna input impedance

300 ohms balanud

75 ohms unbalanced

Stereo separation . . . .

Frequency response . .

eeeeeeeeeeee

AM section
Tuning range ...... 530 to 1,600 kHz
Usable sensitivity (bar antenna)

- ....... ' ..... 50 dB/m (300 uV/m)
Selectivity ........ 30 dB
Signal to noise ratio . . 50 dB

Distortion (at 30 96 Modulation, 80 dB/m)
' less than 0.5 96

eeeeeeeeeeee

Others

Power requirements
Power voltage . . . . 100, 120, 220, 240 V
(50/60 Hz)
Power consumption
Rated consumption

500 watts

Dimensions ....... 560 mm (22-1/l6") W
201 mm (7-15/16) H
475 mm (1 8-314") D

Weight .......... 2l.0 kg (46.3 lbs) net
23.7 kg (52.2 lbs) packed

eeeeeeeeeee

Design and specifications subiect to changes without .notice for improvements.

9 In- order to simplify the explanation illustrations may sometimes differ from the originals.
a! Dolby is a trademark of Dolby Laboratories, Inc.

1. BLOCK DIAGRAM

0 Audio Section

(F3076) (P3079)

$0 50

Source Audio

Mauser Mutinq

. 30" 1° 7 0
Soul Izoa on-

TONE CONTROL AMP (303" 'W DRIVER AMP Salli-30821
5 5 Wt
0"3080' High swank
Balance W Filter Filter M at
War "308"
Master v9 OFF Speakers
I. I XIO $05
.. ' 0 «>821
5 Tone o as Fromm m
I: tr-sorz, J.
E 5°F3032 I r-son) l museum
0 F'
0N1 ow film?" POWER momma
i
r ------------------- 7
1
If
Flower Indicator t£D
- Saw-3082)
0
Jet» &
MIC JMK 9