What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Onkyo TX-200 receiver

Quartz Synthesized Tuner Amplifier with Automatic Precision Reception System
Specifications
Amplifier Section
Power Output:  38 watts per channel (min. RMS, at 8 Ω, both channels driven, from 20 - 20,000 Hz, with no more than 0,08% T.H.D.)
Music Power Output (DIN):
2 x 80 watts at 4 Ω (1 kHz)
2 x 53 watts at 8 Ω (1 kHz)
Continuous Power Output (DIN):
2 x 50 watts at 4 Ω (1 kHz)
2 x 40 watts at 8 Ω 91 kHz)
Total Harmonic Distortion:  0,08% at rated power ( 0,08% at 1 watt output)
IM Distortion:  0,08% at rated power ( 0,08% at 1 watt output)
Damping Factor:  35 at 8 Ω
Frequency Response :  20 - 30,000 Hz ±1 dB
RIAA deviation:  20 - 20,000 Hz ±0,8 dB
Sensitivity/Impedance:
Phono :  2,5 mV/50 k Ω
Tape Play :  150 mV/50 k Ω
Tape rec :  150 mV/3,5 k Ω
Phono Overload:  180 mV RMS at 1 kHz (0,08%T.H.D.)
Signal-to-Noise ratio:
Phono :  85 dB (at 10 mV input, A weighted);  75 dB (IHF)
Tape :  95 dB (A weighted);  80 dB (IHF)
Tone Controls
Bass :  ±8 dB at 100 Hz
Treble :  ±8 dB at 10 kHz
Loudness (volume at -30 dB):  +7 dB at 70 Hz;  +5 dB at 10 kHz
FM Tuner Section
Tuning Range:  87,5 - 108,0 MHz (50 kHz steps)
Usable Sensitivity:
Mono :  12,8 dBf (1,2 µV)
Stereo :  18,0 dBf (2,2 µV)
50 dB Quieting Sensitivity:
Mono :  18,0 dBf (2,2 µV)
Stereo :  37,2 dBf 920 µV)
Capture Ratio:  1,5 dB
Image rejection ratio:  85 dB
IF Rejection ratio:  90 dB
Signal-to-Noise ratio:
Mono :  71 dB
Stereo :  66 dB
Selectivity:  50 dB DIN (±300 kHz, 40 kHz dev.)
AM Suppression Ratio:  50 dB
Harmonic Distortion:
Mono :  0,15%
Stereo :  0,3%
Frequency Response:  30 - 15,000 Hz ±1,5 dB
Stereo Separation:  40 dB at 1 kHz;  30 dB at 100 - 10,000 Hz
Muting level : 17,2 dBf (4,0 µV)
Stereo Threshold:  17,2 dBf (4,0 µV)
AM Tuner Section
Tuning Range:  522 - 1,611 kHz (9 kHz steps)
Usable Sensitivity:  30 µV
Image Rejection Ratio:  40 dB
IF Rejection Ratio:  30 dB
Signal-to-Noise Ratio:  40 dB
Harmonic Distortion:  0,8%
General
Semiconductors:  34 Transistors;  81 Diodes;  10 ICs;  6 FETs
Power Supply:  Ac 220 - 240 V 50/60 Hz
Dimensions (W x H x D):  418 x 112 x 340 mm (16-1/2" x 4-1/2" x 13-3/8")
Weight:  7,1 kg 915,6 lbs)

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