SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
AEP Model
E Model
Australian Model
MULTI CHANNEL AV RECEIVER
9-887-648-03
2007G16-1
© 2007.07
SPECIFICATIONS
STR-K785
• STR-K785 is the tuner and the amplifier
section in HT-DDW785 and HTP-78DW.
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
“DTS” and “DTS Digital Surround” are registered trademarks of
Digital Theater Systems, Inc.
— Continued on next page —
Amplifier section
Power Output
1)
Models of area code SP and SP6
Stereo mode (rated) (6 ohms 1 kHz, THD 1%)
70 W + 70 W
Surround mode
2)
(reference) (6 ohms 1 kHz,
THD 10%)
RMS output
FRONT: 100 W per
channel
CENTER: 100 W
SURROUND: 100 W per
channel
Stereo mode (rated) (6 ohms 120 Hz – 20 kHz,
Stereo mode (rated) (6 ohms 1 kHz, THD 1%)
RMS output
FRONT: 122 W per
channel
CENTER: 122 W
SURROUND: 122 W per
channel
1)
Measured under the following conditions:
2)
Reference power output for front, center and
surround speakers. Depending on the sound field
settings and the source, there may be no sound
output.
Area code
Power requirements
SP, SP6
230 V AC, 50 Hz
AUS
240 V AC, 50 Hz
AEP
230 V AC, 50 Hz
Inputs
Analog
Sensitivity: 800 mV/
50 kohms
Digital (Coaxial)
Impedance: 75 ohms
Outputs (Analog)
SUB WOOFER
Voltage: 2 V/1 kohm
Tone
Gain levels
±
6 dB, 1 dB step
Reproduction frequency range:
28 – 20,000 Hz
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna
FM wire antenna
Antenna terminals
75 ohms, unbalanced
Intermediate Frequency
10.7 MHz
AM tuner section
Tuning range
Stereo mode (rated) (6 ohms, 1 kHz, THD 1%)
85 W + 85 W
Surround mode
2)
(reference) (6 ohms, 1 kHz,
THD 10%)
RMS output
FRONT:122 W
per channel
CENTER:122 W
SURROUND:122 W
per channel
Models of area code AEP
With 9-kHz tuning scale:
531 - 1,602 kHz
Antenna
Loop antenna
Intermediate Frequency
450 kHz
Video section
Inputs/Outputs
Video:
1 Vp-p, 75 ohms
COMPONENT VIDEO:
Y: 1 Vp-p, 75 ohms
P
B
/C
B
: 0.7 Vp-p,
75 ohms
P
R
/C
R
: 0.7 Vp-p,
75 ohms
80 MHz HD Pass Through
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