The OCL type main
amplifier consists of a differential amplifier in the first stage and
direct-coupled, complementary symmetry amplifier circuit in every following
stage. It is designed for heavy duty use and features an oversize heat sink and
rugged power transistors. It is also equipped with a "sure-action"
protection circuit which includes a sensitive DC current detector that protects
speakers, and an ASO limiter type detector that protects power transistors by
circuit breaking relay action.
The equalizer
amplifier is a dual cantype, low noise operational IC amplifier which has very
high stability and low distortion ratio. Every audio stage from input to output
is supplied by a positive, negative dual power supply. The speakers can easily
be phase shifted to correspond with Aux, Tape Play and 4CH inputs, making this
receiver easily adaptable for 4-channel reproduction.
Tuner Section
features;
The FM front end
consists of one FET and two other transistors used in one RF stages. It also
includes a frequency linear 4-gang tuning condenser.
PLL is employed in
the MPX section and assures excellent channel separation and improved
stability.
FM DET Out
connectors are available, permetting this receiver to be ready for FM 4-channel
broadcasts whenever they become available.linear scaled front dial assures
fast, accurate tuning.
FM Tuner Section
Frequency
Range: 88 MHz - 108 MHz
Usable Sensitivity
(IHF): 1,9 µV
Quieting Slope: 5 µV (48 dB); 10 µV (60 dB); 50 µV (68 dB)
Frequency
Response: 20 Hz to 15,000 Hz +0,6 dB,
-1,6 dB
Harmonic Distortion:
Mono : 0,3% (at 400 Hz, 100% modulation)
Stereo : 0,5% (at 400 Hz, 100% modulation)
Signal-to-Noise
Ratio: 68 dB at 1 mV input
Image
Rejection: 70 dB
Selectivity (IHF ALT
channel): 65 dB
IF Rejection: 90 dB
Spurious Signal
Rejection: 90 dB
AM Suppression: 70 dB
Capture Ratio: 1,5 dB
Stereo
Separation: 33 dB at 1 kHz ; 27 dB at 10 kHz
Sub Carrier
Suppression: 60 dB
Antenna
Impedance: 300 Ω balanced; 75 Ω
unbalanced
AM Tuner Section
Usable Sensitivity
(IHF): 18 µV
Signal-to-Noise
Ratio: 45 dB at 1 mV input
Image Rjection: 60 dB
Selectivity
(IHF): 30 dB
IF rejection: 40 dB
Antenna: Buily-in ferrite bar antenna . External
antenna terminal
Main Amplifier
Section
RMS Power Output
Both Channel Driven:
45 watts x 2 into 8
Ω at 20 Hz to 20 kHz
52 watts x 2 into 8
Ω at 1 kHz
65 watts x 2 into 4
ohms at 1 kHz (DIN)
Dynamic Power
Output:
160 watts into 8 Ω
240 watts into 4 Ω
Total Harmonic
Distortion:
0,3% at rated power
into 8 Ω
0,07% at 1/2 rated
power into 8 Ω at 1 kHz
Intermodulation
Distortion (60 Hz :7 kHz = 4:1):
0,3% at rated power
into 8 Ω
0,07% at 1/2 rated
power into 8 Ω
Power
Bandwidth: 10 Hz to 30,000 Hz
Damping Factor: 50 at 8 Ω
Speaker
Impednce: accept 4 Ω to 16 Ω
Preamplifier Section
Input Sensitivity
/Impedance:
Phono 1, 2 : 2,5 mV/50 k Ω
Aux : 150 mV/80 k Ω
Tape Play : 150 mV/80 k Ω
Mic : 2,5 mV/50 k Ω
Maximum Input
Voltage (RMS)
Phono 1, 2 : 120 mV (T.H.D. 0,3% at 1 kHz)
Signal-to-Noise
Ratio (IHF A Curve):
Phono 1, 2 : 70 dB
Aux : 90 dB
Tape Play : 90 dB
Mic : 65 dB
Output
Voltage/Impedance
Tape Rec (Pin)
: 150 mV/ 100 Ω
Tape rec (DIN)
: 30 mV/80 k Ω
Frequency response
Phono : RIAA Standard curve ±1 dB
Aux, Tape Play
: 10 Hz to 40,000 Hz ±1 dB
Tone Controls
Bass : ±10 dB at 100 Hz
Treble : ±10 dB at 10 kHz
Loudness Control
(-30 dB) : ±8 dB at 100 Hz; ±5 dB at 10
kHz
High Filter : -10 dB at 10,000 Hz
Low Filter : - 8 dB at 100 Hz
General
Switches:
Speaker Selector
: Off, A, B, C, A + B, A + C
Input Selector: AM - FM - PHONO 1 - PHONO 2 - AUX - MIC
Mode : Left - Right - Stereo - REV - MIX
Tape Monitor : Source Mon - B Mon - A Play ; Source - B Play - A Mon
Others: Low and High Filter, Loudness, FM Muting, Mic
and Phone jack
AC Outlets: Switched 1
Power
Supply : 110 - 120 - 220 - 240 V AC, 50/60 Hz
Consumption: 340 watts at full power; 40 watts at no
signal
Dimensions (W x H x
D): 480 x 151 x 344 mm (18-15/16" x
5-15/16" x 13-9/16")
Weight: 13,5 kg (29,8 lbs)
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