Sony STR-K990 手册

Clearing the receiver’s memory may remedy 
the problem (page 29). However, note that all 
memorized settings will be reset to their 
factory settings and you will have to readjust 
all settings on the receiver.

Consult your nearest Sony dealer. Note that if 
service personnel changes some parts during 
repair, these parts may be retained.

 

(Models of area code U only)
With 6 ohm loads, both channels driven, from 
120 – 20,000 Hz; rated 90 watts per channel 
minimum RMS power, with no more than 1% 
total harmonic distortion from 250 milliwatts 
to rated output.

Power Output

1)

Models of area code U, CA
Stereo mode (6 ohms, 1 kHz, THD 1%)

90 W + 90 W

Surround mode

2)

 (reference) (6 ohms, 1 kHz, 

THD 10%)

RMS output
FRONT:140 W

 

per channel
CENTER:140 W
SURROUND:140 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.

Inputs

Analog

Sensitivity: 800 mV/

 

50 kohms

Digital (Coaxial) Impedance: 75 ohms

Outputs (Analog)

AUDIO OUT

Voltage: 800 mV/

 

10 kohms

SUB WOOFER

Voltage: 2 V/1 kohm

Tone

Gain levels

±6 dB, 1 dB step

All memorized settings

Customized sound fields

U, CA

120 V AC, 60 Hz