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Specifications - Sherwood R-772 Service Manual

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Measuring methods are based on IHF and IEC standard 268-3
Measurements conditions,unless otherwise noted :
Output resistive load = (6) ohms / Both channel driven
Tone Direct ON , Other SW's : OFF
Nominal input level : 5mV for MM, 0.5mV for MC, 500mV for general purpose inputs
Power figures should be kept minimum 10min. between 15 and 35
Terminator : 100ohm for MC, 1kohm for MM and general purpose inputs
Filter : IHF-A filter
Power supply : 120V/60Hz (A), 230V/50Hz (RDS)
FRONT AMP SECTION
NO.
DESCRIPTION
1
INPUT SENSITIVITY
2
TOTAL HARMONIC DISTORTION
(STEREO IN)
3
CONTINUOUS AVERAGE POWER
at 1 % THD
(STEREO IN)
4
S/N RATIO, INPUT SHORT
IHF-A FILTER
5
FREQUENCY RESPONSE (-3dB)
CENTER AMP SECTION(FRONT CENTER)
NO.
DESCRIPTION
1
INPUT SENSITIVITY
2
TOTAL HARMONIC DISTORTION
(STEREO IN)
3
CONTINUOUS AVERAGE POWER
at 1 % THD
(STEREO IN)
4
S/N RATIO, INPUT SHORT
IHF-A FILTER
5
FREQUENCY RESPONSE (-3dB)
SURROUND AMP SECTION
NO.
DESCRIPTION
1
INPUT SENSITIVITY
2
TOTAL HARMONIC DISTORTION
(STEREO IN)
3
CONTINUOUS AVERAGE POWER
at 1 % THD
(STEREO IN)

SPECIFICATIONS

R/O = Rated Output
* SPKR LEVEL:ALL 0dB
* EXT IN INPUT * TONE OFF
INPUT
FREQ.
EXT IN INPUT
1kHz
EXT IN INPUT
40Hz
1kHz
20KHz
EXT IN INPUT
40Hz
1kHz
20KHz
EXT IN INPUT
1kHz
EXT IN INPUT
* SPKR LEVEL:ALL 0dB
* EXT IN INPUT
INPUT
FREQ.
EXT IN INPUT
1kHz
EXT IN INPUT
40Hz
1kHz
20KHz
EXT IN INPUT
40Hz
1kHz
20KHz
EXT IN INPUT
1kHz
EXT IN INPUT
* SPKR LEVEL:ALL 0dB
* EXT IN INPUT
INPUT
FREQ.
EXT IN INPUT
1kHz
EXT IN INPUT
40Hz
1kHz
20KHz
EXT IN INPUT
40Hz
1kHz
20KHz
2
* SPK SIZE:YES
* X-OVER:FULL RANGE
REMARK
UNIT
LIMIT L/R
R/O
mV
300±50
R/O-3dB
(6)ohms
W
W
W
R/O
dB
1W / 1kHz Ref. Hz~kHz
20~50
* SPK SIZE:YES
* TONE OFF
* X-OVER:FULL RANGE
REMARK
UNIT
LIMIT L/R
R/O
mV
300±50
R/O-3dB
(6)ohms
W
W
W
R/O
dB
1W / 1kHz Ref. Hz~kHz
20~50
* SPK SIZE:YES
*TONE OFF
* X-OVER:FULL RANGE
REMARK
UNIT
LIMIT L/R
R/O
mV
300±50
R/O-3dB
(6)ohms
W
W
W
NOMINAL
L/R
300±30
0.12
0.08
0.12
0.08
0.2
0.12
85
90
95
100
85
90
85
90
20~55
NOMINAL
L/R
300±30
0.12
0.08
0.12
0.08
0.2
0.12
85
90
95
100
85
90
85
90
20~55
NOMINAL
L/R
300±30
0.12
0.08
0.12
0.08
0.3
0.2
85
90
95
100
85
90
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