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ORDER No.MD0004057C1
A2
AV Control Stereo Receiver
SA-DX940
Colours
(K)...........Black Type
Areas
P...............U.S.A.
PC.............Canada
SPECIFICATIONS
Specification
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AMPLIFIER SECTION
Rated minimum sine wave RMS power output
20Hz - 20kHz both channels driven / 0.05% total harmonic
distortion
100W per channel (8
)
1kHz continuous power output both channels driven
0.05% total harmonic distortion
105W per channel (8
)
Total harmonic distortion
rated power at 20Hz - 20kHz
0.05% (8
)
half power at 1kHz
0.03% (8
)
Power output at 1 kHz each channel driven
0.9% total harmonic distortion
Front / Center / Surround
2 x 100W (8
) / 100W (8
) / 2 x 100W (8
)
Low frequency damping factor
30 (8
)
Load impedance
Front
A or B / A and B
4-8
/ 8
Center / Surround
8
/ 8
Dynamic headroom
2dB (8
)
Frequency response
PHONO
RIAA standard curve ±
0.8dB
CD, TAPE, DVD, TV, VCR
10Hz - 70kHz, ±3dB
Input sensitivity
PHONO
0.4mV (3mV, IHF '66)
CD, TAPE, DVD, TV, VCR
27mV (200mV, IHF '66)
S/N (IHF A)
PHONO / CD, TAPE, DVD, TV,
VCR
70dB (80dB, IHF '66) /
75dB (85dB, IHF '66)
Input impedance
PHONO / CD, TAPE, DVD, TV,
VCR
47k
/ 22k
Tone controls
BASS / TREBLE
50Hz, +10 to -10dB / 20kHz,
+10 to -10dB
Subwoofer frequency response / (-
6dB)
7-200Hz
Digital input
Optical
CD, DVD, TV
FM TUNER SECTION
Frequency range
87.9 - 107.9MHz
Sensitivity
11.2dBf (2
V, IHF '58)
50 dB quieting sensitivity
MONO
18.3dBf (4.5
V, IHF '58)
STEREO
38.3dBf (45
V, IHF '58)
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Total harmonic distortion
MONO / STEREO
0.2% / 0.3%
S/N
MONO / STEREO
73dB / 67dB
Frequency response
20Hz - 15kHz, +1dB, -2dB
Alternate channel selectivity
65dB
Capture ratio
1.5dB
Image rejection at 98MHz
40dB
Spurious response rejection at
98MHz
75dB
AM suppression
50dB
Stereo separation
1kHz / 10kHz
40dB / 30dB
Antenna terminal
75
(unbalanced)
AM TUNER SECTION
Frequency range / Sensitivity /
Selectivity / IF rejection at 1000kHz
530 - 1710kHz / 20
V,
330
V/m / 55dB / 50dB
VIDEO SECTION
Output voltage at 1V input
1±0.1Vp-p
(unbalanced)
Maximum input voltage / Input/
output impedance
1.5Vp-p / 75
GENERAL
Power supply / Power consumption
/ Dimensions (W x H x D)
AC120V, 60Hz / 380VA,
290W / 430 x 158 x
320.5mm / (16-15/16"x6-7/
32"x12-5/8")
Mass
9.6kg (21.3lb.)
Power consumption in standby /
mode:
1W
Notes:
1. Specifications are subject to change without notice. / Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum /
analyzer.
*
1
Manufactured under license from Dolby Laboratories
Licensing / Corporation. "Dolby", the double-D symbol and
"PRO LOGIC" / are trade marks of Dolby Laboratories
Licensing Corporation.
*
2
This product is manufactured under license from DTS, / Inc.
of America.
2000 Matsushita Electric Industrial Co., Ltd. All rights reserved.
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Unauthorized copying and distribution is a violation of law.
1. Safety Precaution
(This "Safety Precaution" is applied only in U.S.A.)
1. Before servicing, unplug the power cord to prevent an electric
shock.
2. When replacing parts, use only manufacturer's recommended
components for safety.
3. Check the condition of the power cord. Replace if wear or
damage is evident.
4. After servicing, be sure to restore the lead dress, insulation
barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure
to make the following insulation resistance test to prevent the
customer from being exposed to a shock hazard.
1.1. Insulation Resistance Test
1. Unplug the power cord and short the two prongs of the plug with
a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with ohmmeter between the jumper
AC plug and each exposed metal cabinet part, such as
screwheads, antenna, control shafts, handle brackets, etc. /
Equipment with antenna terminals should read between 3M
and
5.2M
to all exposed parts*. (Fig.1) / Equipment without antenna
terminals should read approximately infinity to all exposed parts.
(Fig.2) / *Note : Some exposed parts may be isolated from the
chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a
possibility of a shock hazard. The equipment should be repaired
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and rechecked before it is returned to the customer.
Fig.1
Fig.2
2. Before Repair and adjustment
Disconnect AC power, discharge Power Supply Capacitors C703, C704, C705 and C706 through
a 10
, 5W resistor to ground. / DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade,
for instance), as this may destroy solid state devices. / After repairs are completed, restore
power gradually using a variac, to avoid overcurrent. / Current consumption at AC120V, 60Hz in
NO SIGNAL mode should be 600-1000mA.
3. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
- No sound is heard when the power is turned on.
- Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and
negative speaker connection wires are "shorted", or if speaker systems with an impedance less
than the indicated rated impedance of the amplifier are used. / If this occurs, follow the
procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate
unless the power is first turned off and then on again.
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