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 T-V5 tuner

Features:
PLL FM Multiplex Demodulator IC for Low Distortion and Wide Separation
IC Construction in FM/AM IF for Dependability
Wide 240 mm Frequency-Linear Tuning Dial
5-LED Signal Strength Meter for FM/AM and 3-LED Center Tune for FM
Muting and Mode Switches

FET RF Amplifier in Fronted
 a high-performance 3-gang variable capacitor and an FET RF amp are found in the FM frontend of the T-V5. They team up to give remarkable performance constancy anywhere, anytime. When signals are weak capture is strong. When signals are strong, suppression of interference is especially good so that crossmodulation and intermodulation distortion are better controlled. Tarcking between the variable capacitor and the tuning pointer is critically matched for tuning accuracy.

Low-Noise / Low-Distortion FM IF IC
All the important circuits for IF, including an IF amp, quadrature detector AFC/AGC circuits, etc., are included in an improved IC taking advantage of all the latest microelectronic techniques. An array of ceramic filters reduces group delay distortion. Thus the T-V5 boasts specifications much better than those found in competing models; less than 0,15%/0,3% (mono/stereo) Total Harmonic Distortion; 82 dB Signal-to-Noise Ratio ratio ; 45 dB stereo separation; 65 dB selectivity and so on, impressive.
Low-Noise / High-Separation FM Stereo IC
Multiplex demodulation for stereo FM signals requires high precision indeed if hi-fi musicality is to be maintained JVC has been in the lead of stereo FM electronics since the beginning, and we've developed a new, improved IC containing the FM MPX of the PLL type. It promises low didtortion and wide channel separation. And best of all, it never requires realignment and is never affected by external, environmental changes or the passage of time.

Self-Contained IC for AM
Even the AM section has been refined for better sound A third IC contains the RF and IF amps for AM, highlighting low noise and low distortion. A new ceramic filter in the IF improves AGC (Automatic Gain Control); whatever the strength of the incoming AM signal sound reproduction is always ideally clean.
Specifications
FM Section
Usable Sensitivity:  10,3 dBf (0,9 µV / 75 Ω )
50 dB Quieting Sensitivity
Mono :  14,8 dBf
Stereo :  36,3 dBf
Signal-to-Noise Ratio
Mono :  82 dB
Stereo :  70 dB
Frequency Response
50 Hz - 15 kHz (+0,5 dB  -1,0 dB)
30 Hz - 17 kHz (+0,5 dB  -2,0 dB)
Distortion
100 Hz :  0,15% (mono); 0,3% (stereo)
1 kHz :  0,15% (mono);  0,3% (stereo)
6 kHz :  0,4% (mono); 0,8% (stereo)
Capture Ratio:  1 dB
Alternate Channel Selectivity:  65 dB (±400 kHz)
Spurious Response Ratio:  75 dB (at 98 MHz)
Image Response Ratio:  60 dB (at 98 MHz)
IF Response Ratio:  90 dB (at 98 MHz)
AM Suppression Ratio:  55 dB
Stereo Separation:  45 dB (1 kHz), 35 dB (50 Hz - 10 kHz)
SCA Rejection Ratio:  70 dB
Muting Threshold:  25,2 dBf
Stereo Automatic Switching Level:  600 mV/3,3 k Ω
Antenna Impedance:  75 Ω  (unbalanced)
AM Section
Usable Sensitivity:  30 µV
Signal-to-Noise Ratio:  50 dB
Selectivity:  45 dB (±10 kHz)
Image Response Ratio:  45 dB
IF Response Ratio:  40 dB
Output Level:  250 mV
Antenna:  Built-in ferrite core bar antenna
General
Dimensions (W x H x D):  420 x 108 x 313 mm ( 16-1/2" x 4-1/4" x 12-4")
Weight:  3,7 kg (8,16 lbs)

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