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 RX-503 Receiver

Receiver System Control Center with AV remote control and computer-controlled S.E.A. graphic equalizer
CSRP improved, with factory-preset values added to the comprehensive display facility; the user can see the settings and use it more easily.
With this, the optimum values of the settings of volume, balance, loudness, SEA, surround, etc, for each source can be stored in memory and recalled immediately while the settings will be shown on the FL display in sequence, whenever the corresponding source is selected. As factory-preset values for each source are stored in the memories of these receivers, these can be recalled when the receivers are switched on for the first time. Therefore, these values can be used as they are as well as modified to the user's preference. In addition, as the remote control units provided with most receivers incorporate a convenient CSRP display, you can check the values and perform adjustment without leaving your listening position.

CCS - COMPU Link Communication System Interactive.
This CCS system gives further interactive information to the JVC-exclusive COMPU LINK system, by indicating the current source or operation mode you've commanded,, or volume up/down, even the station name and SEA pattern recalled.

Five programmed and five user preset equalization patterns
The graphic equalizer not only allows the user to create five custom equalization  patterns and store them in memory for later recall but also lets the user call up one of five pre-programmed equalization patterns; heavy, Clear, Soft, Movie and Vocal.

SEA equalization pattern name memory/indication
Together with the five user-programmable equalizer patterns, top-end receivers have a pattern name input, and display capability. In the same way as that for station names, up to five or  four  (RX-503) characters or numerals can be stored in memory.

40 FM/AM random station preset memory
All JVC receivers include a computer-controlled digital synthesizer tuner featuring preset memory of up to 40 broadcast stations for FM and AM randomly.
This feature lets the user to preset almost any FM or AM station to be listened to, for immediate pushbutton recall.

Other Features on JVC receivers
Station name memory with alphanumeric display
Auto memory functions
Preset scan function
Sound selector

Amplifier Section
Output Power (2-channel operation):  2 x 80 watts RMS (8 Ω, 20 Hz - 20khz, 0,03% T.H.D.)
Intermodulation Distortion:  0,03% at 80 watts
Input Sensitivity/Impedance:
Phono :  2,5 mV/47 k Ω
Tape 1 Play :  200 mV/47 k Ω
Tape 2, CD, Video :  200 mV/47 k Ω
Recording Output level:  200 mV
Frequency response:
Phono (RIAA eq.) :  20 Hz - 20 kHz ±0,5   dB
Tape 1 Play :  10 Hz - 50 kHz ±1 dB
Tape 2, CD, Video :  10 Hz - 50 kHz ±1 dB
Signal-to-Noise ratio:
Phono :  71 dB ('66 IHF); 78 ('78 IHF, Rec Out)
Tape 1 Play :  91 dB ('66 IHF); 85 dB ('78 dB)
Tape 2, CD, Video :  91 dB ('66 IHF); 85 dB ('78 dB)
S.E.A. Section
Center Frequencies:  63 Hz. 160 Hz, 400 Hz, 1 kHz;  2 ,5 kHz;  6,3 kHz; 16 khz
Control range:  ±10 dB
FM Tuner Section (IHF)
Tuning Range:  87,5 MHz - 108 MHz
Usable Sensitivity [mono]:  10,8 dBf (0,95 µV/ 75 Ω)
50 dB Quieting Sensitivity :
Mono :  16,3 dBf  (1,8 µV /75 Ω) 
Stereo :  38,3 dBf (22,5 µV/75 Ω)
Signal-to-Noise Ratio (IHF-A net, 85 dBf):
Mono :  80 dB
Stereo :  73 dB
Total Harmonic Distortion (1 kHz):
Mono :  0,15%
Stereo :  0,2%
Frequency Respponse:  30 Hz - 15 kHz ; +0,5 dB -3 dB
Capture ratio (85 dBf):  1,5 dB
Alternate Channel Selectivity:  60 dB (±400 kHz)
IF Response Ratio:  85 dB (at 98 MHz)
Stereo Separation:  40 dB (at 1 kHz)
AM Tuner Section
Tuning Range:  530 kHz - 1710 kHz
Sensitivity:  30 µV (external); 300 µV /m (loop antenna)
Signal-to-Noise ratio:  50 dB (100 mV/m)
Selectivity:  25 dB (±10 kHz)
Image response Ratio:  40 dB
IF Response Ratio:  60 dB
Total Harmonic Distortion:  0,5% (100 mV/m)
Requirements :  AC 120 V or 230 V 50/60 Hz
Consumption :  290 watts, 380 VA
Dimensions (W x H x D):  435 x 125 x 330 mm (17-3/16" x 4-15/16" x 13")
Weight:  8 kg (17,7 lbs)
Remote Control :  RM-SR503U

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