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





JVC FX-311 L BK

Computer Controlled Digital Synthesizer Tuner
Features:
Quartz-PLL digital frequency synthesizer
Random preset memory for 40 FM/MW/LW stations
Direct-access numeric keypad
Preset scan for sampling all preset FM/MW/LW stations automatically
Auto memory for automatically presetting all 40 FM/MW/LW stations at a touch
Preset cancel to skip unwanted presets during scanning
Multi-mode LCD display
Sensitive MW loop aerial
Specifications:
FM Tuner Section (IHF)
Usable Sensitivity:  10,8 dBf (0,95 µV/75 Ω)
50 dB Quieting Sensitivity:
Mono :  16,3dBf (1,8 µV/75 Ω)
Stereo :  38,1 dBf (22 µV/75 Ω)
Signal-to-Noise Ratio (IHF-A /DIN)
Mono  (at 85dBf):  80 dB / 72 dB
Stereo (at 85 dBf) :  73 dB / 64 dB
Total Harmonic Distortion (1 kHz): 
Mono / Stereo :  0,15% / 0,2%
Capture Ratio:  1,5 dB
Selectivity (± 400 kHz):  60 dB
IF Response Ratio:  85 dB
AM Suppression Ratio:  60 dB
Stereo Separation (1 kHz):  40 dB
Frequency Response:  30 Hz - 15 kHz (+0,5  -5,0 dB)
Antenna Input Impedance:  75 Ω unbalanced; 300 Ω balanced
Output Signal Level:  600 mV (2,2 k ohms)
MW Tuner Section
Usable Sensitivity :  300 µV /m (loop antenna)
Total Harmonic Distortion:  0,5%
Signal-to-Noise Ratio:  50 dB
Selectivity (±10 kHz):  35 dB
Image Response Ratio:  40 dB
IF Response Ratio:  60 dB
LW Tuner Section
Usable Sensitivity: 
Loop Antenna ;  600 µV/m
External aerial :  100 µV
Signal-to-Noise  Ratio:  50 dB
Dimensions (W xH x D):  435 x 11 x 233 mm
Weight:  31,9 kg


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