HT-DDW870, STR-K870P - Sony Audio Service Manual (repair manual). Page 2

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1) Measured under the following conditions:

2) Depending on the sound field settings and the 

source, there may be no sound output.

Inputs (Analog)

Inputs (Digital)

Outputs (Analog)

Reproduction frequency range:

28 – 20,000 Hz

Tone

Tuning range

87.5 - 108.0 MHz

Antenna

FM wire antenna

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

Tuning range
Models of area code US, CND
With 10-kHz tuning scale:  530 - 1,710 kHz

3)

With 9-kHz tuning scale:  531 - 1,710 kHz

3)

Models of area code AEP, UK, SP, AUS
With 9-kHz tuning scale: 531 – 1,602 kHz
Models of area code E51
With 10-kHz tuning scale:  530 - 1,610 kHz

3)

With 9-kHz tuning scale:  531 - 1,602 kHz

3)

Models of area code MX
With 10-kHz tuning scale:  530 - 1,610 kHz
Antenna

Loop antenna

Intermediate frequency

450 kHz

3) You can change the AM tuning scale to 9 kHz or 

10 kHz. After tuning in any AM station, turn off the 
receiver. While holding down PRESET TUNING + 
or TUNING +, press ?/1. All preset stations will be 
erased when you change the tuning scale. To reset 
the scale to 10 kHz (or 9 kHz), repeat the procedure.

Inputs/Outputs
Video:

1 Vp-p, 75 ohms

Power requirements

US, CND

120 V AC, 60 Hz

MX

127 V AC, 60 Hz

AEP, UK, SP

230 V AC, 50 Hz

AUS, E51

240 V AC, 50 Hz

SA-CD/CD, MD/TAPE, 
DVD, VIDEO 1, 2, 3

Sensitivity: 800 mV
Impedance: 50 k ohms

DVD (Coaxial)

Sensitivity: –
Impedance: 75 ohms

VIDEO 2, SA-CD/CD 
(Optical)

Sensitivity: –
Impedance: –

MD/TAPE (OUT), 
VIDEO 1 (AUDIO OUT)

Voltage: 800 mV
Impedance: 10 k ohms

SUB WOOFER

Voltage: 2 V
Impedance: 1 k ohm

Gain levels

±6 dB, 1 dB step

US, CND

120 V AC, 60 Hz

MX

1

2

27 V AC, 60 Hz

AEP, UK

30 V AC, 50/60 Hz

AUS

240 V AC, 50 Hz

SP

220 – 230 V AC,
50/60 Hz

E51

120/220/240 V AC,
50/60 Hz

Power consumption

Power consumption (during standby mode)

0.2 W

Dimensions (w/h/d) (Approx.)

430 

× 157.5 × 310 mm

(17 

× 6 1/4 × 12 1/4 inches)

including projecting parts 
and controls

Mass (Approx.)

8.0 kg (17 lb 11 oz)

US

170 W

CND

230 VA

AEP, UK, AUS, SP, MX, 
E51

190 W 

Design and specifications are subject to change 
without notice

•  Abbreviation
   AUS

: Australian model

   CND : Canadian model
   E51

: Chilean and Peruvian models

   MX

: Mexican model

   SP

: Singapore model