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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 R-S55L receiver



Specifications
FM Tuner Section
Tuning Range:  87,6 MHz - 108 MHz
Usable Sensitivity (IHF):  12,2 dBf (1,1 µV/ 75 Ω)
50 dB Quieting Sensitivity:
Mono :  15,9 dBf 91,7 µV/75 Ω)
Stereo :  38,2 dBf 922 µV/75 Ω)
Distortion
Mono :  0,15%
Stereo :  0,30%
Signal-to-Noise ratio:
Mono :  78 dB ( A-Net weighted (72 dB DIN)
Stereo :  68 dB A-Net weighted (63 dB DIN)
Selectivity:  65 dB ±400 kHz (45 dB ±300 kHz, DIN)
Capture ratio:  1,0 dB
IF Rejection:  90 dB at 98 MHz
Image Rejection:  55 dB  at 98 MHz
Stereo Separation:  45 dB at 1 kHz
MW Tuner Section
Tuning Range:  525 kHz - 1605 kHz
Usable Sensitivity:  300 µV/m, 50 µV/m (external antenna)
Signal-to-Noise Ratio:  45 dB
Distortion:  0,5%
Selectivity:  46 dB ±9 kHz
LW Tuner Section (DIN)
Tuning Range:  150 kHz - 350 kHz
Usable Sensitivity:  40 µV
Signal-to-Noise Ratio:  45 dB
Distortion:  0,5%
Selectivity:  50 dB ±9 kHz
Amplifier Section
Power RMS (both channel driven, 20 Hz - 20 kHz):  40 watts per channel at 8 Ω
Power RMS (both channel driven at 1 kHz):
42 watts per channel at 8 Ω
50 watts per channel at 4 Ω
Total Harmonic Distortion:  0,03% at rated power (0,008% at half rated power, 1 kHz)
Signal-to-Noise Ratio (IHF short circuit A network):
Phono :  77 dB
Tape Play :  98 dB
Dimensions (W x H x D):  422 x 109 x 403 mm (16-5/8" x 4-1/4" x 15-7/8")
Weight:  8,3 kg (18,3 lbs)


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