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Continuous Power Output:
Amplifier load at 4 ohms
300W/300W:
8 ohms
180W/180W
(1. kHz, each channel driven)
Amplifier load at 4 ohms
250W/250W
~
8 ohms
150W/150W
(1 kHz, both channel driven)
Total Harmonic Distortion:
Less than 0.1% (at rated power)
Less than 0.02% (at power 1W/ch)
intermodulation distortion:
Less than 0.2% (at rated power) .
Less than 0.5% (at power 1W/ch)
Power Bandwidth:
10 - 50 kHz (at 0.1% T.H.D.)
(IHF both channel driven)
Frequency Response:
(1W/ch, +0 dB — -1 dB)
15 - 100 kHz
input Sensitivity/impedance:
1.2V/30kohms
Output Terminal/Matching Imp.
Speaker A, B, C, A+C
4 to 16 ohms
Damping Factor:
More than 80 (1: kHz, 8 ohms)
Signal to Noise Ratio:
More than 105 dB (IHF, short
circuit A network)
Residual Hum and Noise:
Less than 0.2 mV (8 ohms)
Srew Rate:
60 V/us
Subsonic Filter:
a
16 Hz (12 dB/oct.)
MISCHELLANEOUS
Power requirements:
110, 220V, 50/60 Hz
AC Outlets:
Switchable:
One 150 Watts
'
|
Unswitchable:
One 200 Watts
Dimensions:
510W x 510D x 290H
ADJUSTMENT OF THE MAIN AMP P.C. BOARD
BEFORE ADJUSTMENT
1. Pull out the PRE OUT/MAIN IN 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 load resistors (8 {2) to the speaker terminals.
4. Tool to be provided.
Electronic Voltmeter, or DC V.T.V.M. or Circuit Tester (Input impedance: More than 30 k{2/V)
~ (A) MID-POINT POTENTIAL ADJUSTMENT >
aes
Set the voltage between the speaker terminal and ground (Chassis) to OV + 0.01V with (VR 01)
(B) IDLING CURRENT ADJUSTMENT
Turn the (VR 02) so that the idling current may become 100 mA....-... .Measure the voltage of the both sides of the
(R13, R14) resistor (0.1 82) and set the (VR 02) so that the value may become 0.01V + 0.001V.
Note : Polarity............4. Emitter of the (0,01 ~ 06)..... (+)
Mid-point...........00
eee eee (-)
(C) Repeat seps A B no further improvement is possible.
|
Note : a. Turn the semi-fixed variabie resistor siowiy during adjustme:
b. Be careful of the polarity of each measurement point.
ee, em
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