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SD-AT50
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment covers
or shields, mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage
current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5 kohm, 10 watt resistor
paralleled by a 0.15 µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
AV control unit
Dimensions
Width: 8-1/2" (215 mm)
Height: 2-5/16" (58 mm)
Depth: 10-5/16" (261 mm)
Weight
2.9 lbs. (1.3 kg)
Audio input terminals Optical digital input (AUX): Square type
Coaxical digital input (DVD/CD): RCA type
Analog input (DVD/CD): RCA type 1 pair (L/R)
Analog input (TV): RCA type 1 pair (L/R)
Analog input (VCR): RCA type 1 pair (L/R)
Analog input (AUX): RCA type 1 pair (L/R)
Audio output terminal Headphones: 16 - 50 ohms (recommended: 32 ohms)
Other terminals
System control 3
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Subwoofer/amplifier unit
Power source
AC 120 V, 60 Hz
Power consumption
80 W
Dimensions
Width: 10-1/4" (260 mm)
Height: 14-11/16" (373 mm)
Depth: 16-5/8" (421 mm)
Weight
21.8 lbs. (9.9 kg)
Power output (FTC)
40 watts minimum RMS per channel into 4 ohms from 20
Hz to 20 kHz, 1 % total harmonic distortion
Rated power output
Front: 50 W + 50 W, Center: 50 W,
Surround: 50 W + 50 W (4 ohms at 1 kHz)
Subwoofer: 50 W (4 ohms at 100 Hz)
Amplification system
2.8224 MHz (64fs) 1-bit switching (remarks: fs = 44.1 kHz)
A/D noise shaping
7th-order
Terminals
Front speakers, Center speaker, Surround speakers: 4
ohms
System control 2
Subwoofer
Type
Maximum input power 100 W
Rated input power
Impedance
SPECIFICATIONS
1
1
(delta - sigma) modulation
6-1/2"(16 cm) woofer (magnetic
shield)
50 W
4 ohms
TO EXPOSED
METAL PARTS
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
Front/center/surround speakers
Type
Full range speaker system (magnetic shield)
3-1/8" (8 cm) speaker
Maximum input power 100 W
Rated input power
50 W
Impedance
4 ohms
Dimensions
Width: 3-3/4" (95 mm)
Height: 4-1/2" (114 mm)
Depth: 4-1/8" (104 mm)
Weight
1.5 lbs. (0.7 kg)/each
– 2 –
VTVM
AC SCALE
1.5 kohms
10 W
0.15 µF
TEST PROBE
CONNECT TO
KNOWN EARTH
GROUND
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