SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
E Model
FM STEREO/FM-AM RECEIVER
9-887-654-03
2007G16-1
© 2007.07
Ver. 1.2 2007.07
SPECIFICATIONS
STR-K685
• STR-K685 is the tuner and the amplifier
section in HT-DDW685.
This receiver incorporates Dolby* Digital and Pro Logic Surround and
the DTS** Digital Surround System.
*
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 DTS,
Inc.
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Amplifier section
Models of area code SP, SP6, E51, MX, TH
Power Output
1)
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
Surround mode
2)
(reference)
(10 ohms 100 Hz, THD 10%)
SUB WOOFER: 60 W
per channel
Models of area code AR
Power Output
1)3)
Stereo mode (rated) (6 ohms 1 kHz, THD 1%)
70 W + 70 W
1)
65 W + 65 W
3)
Surround mode
2)
(reference)
(6 ohms 1 kHz, THD 10%)
RMS output
FRONT:
100 W per channel
1)
90 W per channel
3)
CENTER:
100 W
1)
90 W
3)
SURROUND:
100 W per channel
1)
90 W per channel
3)
Surround mode
2)
(reference)
(10 ohms 100 Hz, THD 10%)
SUB WOOFER:
60 W per channel
1)
50 W per channel
3)
1)
Measured under the following conditions:
Area code
Power requirements
SP, SP6, AR, TH
230 V AC, 50 Hz
E51
240 V AC, 50 Hz
MX
2)
Reference power output for front, center, surround
speakers and sub woofer. Depending on the sound
field settings and the source, there may be no
sound output.
3)
Measured under the following conditions:
Inputs
Analog
Sensitivity: 800 mV/
50 kohms
Digital (Coaxial) Impedance: 75 ohms
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
Area code
Power requirements
AR
220 V AC, 50 Hz
127 V AC, 60 Hz
Summary of Contents for STR-K685
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