STR-SE581
US Model
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
MICROFILM
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“Dolby” “Pro Logic” and the double-D symbol
a
are
trademarks of Dolby Laboratories Licensing
Corporation.
SPECIFICATIONS
— Continued on next page —
Audio power specifications
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 8
Ω
load, both channels driven, from 40 - 20,000 Hz, rated 100 watts per
channel minimum RMS power, with no more than 0.5% total harmonic distortion
from 250 milliwatts to rated output.
Amplifier section
Stereo mode
(8
Ω
at 40 Hz - 20 kHz less than 0.5% total
harmonic distortion)
100 W + 100 W
Surround mode
(8
Ω
at 1 kHz, THD 0.5%)
Front: 100 W/ch
Center: (Pro Logic Mode)
100 W
Rear: 50 W/ch
5.1/DVD INPUT* mode
(8
Ω
at 1 kHz, THD 0.8%)
Front: 100 W/ch
Center: 100 W
Rear: 50 W/ch
Frequency response
PHONO: RIAA
equalization curve ±0.5 dB
TV/DBS, CD, TAPE/MD, VIDEO, 5.1/DVD
INPUT
10 Hz - 50 kHz ±1 dB
Inputs
Sensitivity Impedance
S/N (weighting network,
input level)
PHONO
(MM)
2.5 mV
50 Kilohms
72 dB*
(A, 2.5 mV)
CD
400 mV
TAPE/MD,
250 mV
82 dB*
TV/DBS,
50 Kilohms
(A, 150 mV)
VIDEO, 5.1/
DVD INPUT*
*78 IHF
Outputs
TAPE/MD REC OUT:
Voltage: 150 mV,
Impedance: 10 k
Ω
VIDEO AUDIO OUT:
Voltage: 150 mV,
Impedance: 10 k
Ω
WOOFER:
Voltage: 2 V,
Impedance:
±
10 k
Ω
PHONES:
Accepts low and high impedance headphones
Muting
Full mute
BASS BOOST
+10 dB at 70 Hz
TONE
±8 dB at 100 Hz and 10 kHz
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna terminals
75 ohms, unbalanced
300 ohms, balanced
Sensitivity
Mono: 18.3 dBf, 4.5
µ
V
Stereo: 38.3 dBf, 45
µ
V
Usable sensitivity
11.2 dBf, 2
µ
V (IHF)
S/N
Mono: 76 dB
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3%
Stereo: 0.59%
Separation
45 dB at 1 kHz
+0.5
Frequency response
30 Hz – 15 kHz
–2
dB
Selectivity
60 dB at 400 kHz
AM tuner section
Tuning range
531 – 1710 kHz
Antenna
Loop antenna
Usable sensitivity
50 dB/m (at 1,000 kHz)
S/N
54 dB (at 50 mV/m)
