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SPECIFICATIONS
POWER
AMPLIFIER SECTION
Continuous Power Output:
Amplifier load at 4 ohms
20W/20W
at8 ohms
18W/18W
(1 KHz, each channel driven)
Amplifier load at 4 ohms
16W/16W
at8 ohms
15W/15W
(1 KHz, both channel driven)
Power Output in the range of 20 to 20 KHz:
Amplifier load at 4 ohms
13W/13W
at8 ohms)
13W/13W
(Both channel driven)
Total Harmonic Distortion:
Less than 0.8% at Rated Output
(Amplifier load at 8 ohms) Less than 0.1% at 1W/ch.
Inter Modulation Distortion:
Less than 0.8% at Rated Output
(Amplifier load at 8 ohms) Less than 0.1% at 1 W/ch.
Power Bandwidth (IHF):
20 to 70 KHz
(Both channel driven)
Frequency Response:
Input Sensitivity/Impedance:
Speaker Impedance:
Damping Factor:
Signal to Noise Ratio:
25 to 80 KHz +3 dB
Accepts 4 ohms to 16 ohms
More than 30 (1 KHz, 8 ohms)
More than 110 dB
(IHF, short circuit
A network)
0.3mV (at 8 ohms)
Less than 0.8 mV
(8 ohms, pre & power amplifier)
Residual
Hum
and Noise:
PRE AMPLIFIER SECTION
input Sensitivity/Impedance:
ADJUSTMENT
ADJUSTMENT
OF MAIN AMP P.C. BOARD
BEFORE
ADJUSTMENT
1. Pull out the PRE OUT/MAIN
!N connector.
2. After the power switch is turned ON, wait a few minutes before
adjustment, to be sure of the most stable operation.
3.
Connect dummy
foad resistors (892) to the speaker terminals.
4. Tool to be provided.
Electronic Voltmeter, or DC V.T.V.M. or Circuit Tester
(Input impedance: More than 50 K2/V)
(A)
MID-POINT POTENTIAL ADJUSTMENT
Set the voltage between the speaker terminal and ground
(Chassis) to OV +0.01V with VR 01 (VR 02)
{(B)
IDLING CURRENT
ADJUSTMENT
Turn the VR 03 (VR 04) so that the idling current may
become 35mA ... Measure the voltage of the both sides of
the R91 (R92) resistor (0.47Q) and set the VR 03 (VR 04)
so that the value may become 0.018V +0.001V.
Note: Polarity ... Emitter of the Q23 (Q24) .....
(+)
Wid -COlNE eieibeccivaieseuiad
(—)
(C)
Repeat seps A B no further improvement is possible.
Note: a. Turn the semi-fixed variable resistor slowly during
adjustment;
b. Be careful of the polarity of each measurement
point.
(1 KHz, at rated power)
PHONO
2.5mV/S0K ohms
TUNER
150mV/50K ohms
AUX
150mV/50K ohms
TAPE,
1,2
150mV/50K
ohms
MIC
: 2.5mV/50K ohms
Phono Overload Input:
Mic Overload
Input:
Signal to Noise Ratio:
Output Level/impedance:
Frequency Response:
PHONO
TUNER/TAPE/AUX
MIC
Tone Controls:
Bass
Treble
Filter Control:
High Filter:
Low Filter:
Loundness Control:
(Power output level at
—30dB)
ALL OVER THE SECTION
Power Requirements:
UM Version
(Switchable)
Power Consumption:
AC Outlet:
Dimensions:
RMS
180mV
Max.
Peak to Peak 420mV
Max.
RMS
150mV
Max.
PHONO
More than 70 dB
(IHF, A network)
TUNER
More than 90 dB
(tHE, A network)
AUX
:
More than 90 dB
(IHF, A network)
TAPE
More than 90 dB
(tHE, A network)
MIC
More than 70 dB
((HF, A network)
TAPE REC
140mV/1
K ohms
(RCA pin jacks)
TAPE REC
35mV/80K ohms
(DIN)
RIAA Standard Equalization
30 to 15K Hz +0.5 dB
25 to 80K Hz +0, —1 dB
70 to 14K Hz +0, —1 dB
+10 dB at 100 Hz
+10 dB at 10K
Hz
5K Hz (—6 dB/oct)
70 Hz (—6 dB/oct)
+8 dB at 100 Hz
+3 dB at 10K Hz
110V, 120V, 220V or 240V,
50/60Hz
47 watts at full power
Two Switched (150 watts max.)
One Unswitched (200 watts max.}
Width
405 mm
Deptch
365 mm
Height
185 mm
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