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





Sony AT-F30

 Stereo Integrated Amplifier (1980)
Specifications
Power Output "  30 W per channel minimum RMS Power (with 8 Ω loads, both channel driven, from 20 - 20,000 Hz;no more than 0,05% THD from 250 mW to rated output)
Continuous RMS Power Output (less than 0,05% THD, both channel driven simultaneously):
At 1 kHz :  30 W + 30 W (8 Ω)
At 20 - 20,000 Hz :  30 W + 30 W (8 Ω)
According to DIN 45500 :  30 W + 30 W (8 Ω)
Power Bandwidth (IHF):  20 - 20,00 Hz
Harmonic Distortion:  less than 0,05% (at rated output)
IM Distortion:  less than 0,02% at rated output
Frequency Respone:
Phono :  RIAA equalizatio curve  ±0,3 dB
Tuner, AUX, Tape :  5 - 60,000 Hz +0, -2 dB
Residual Noise:  less than 100 V (8 Ω, network A)
Damping Factor:  40 (8 Ω, 1 kHz)
Inputs Sensitivity/Impedance:
2,5 mV (-50 dB)/50 k Ω
Tuner, Aux, Tape :140 mV (-15 dB)
Phono Maximum Input Capability (0,1% distrotion,1 kHz):  220 mV
S/N (weighting network, input level): 
Phono :  80 dB (A, 2,5 mV)
Tuner, Aux, Tape :  100 dB (A, 140 mV)
Outputs Voltege/ Impedance:
Rec Out :  140 mV (-15 dB)/4,7 k Ω
Tone Controls:
Bass :  ±10 dB at 70 Hz (turnover frequency :  400 Hz)
Treble :  ±10 dB at 30 kHz turnover frequancy3 kHz)  : 
Loudness :
+8 dB at 100 Hz
+4 dB at 10 kHz
Power requirement:  120 V, 220 V, 240 V, 50/60 Hz
Power Consumption:  75 W (US model)
AC Outlets: 1 switched, 100 W

Weight:  5,8 kg (12 lb 13 oz) Net

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