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 KD-A3 cassette deck

Features

4-position Tape Select Switches allow kinds of tape, including the new Metal Tape, to be used

An SA erase head with high erase efficiency is used so that Metal Tape can be erased

ANRS which lowers tape hiss noise so that it is inaudible and Super ANRS which improves linearity at high frequencies are incorporated

5-point peak indicators are for easier and more accurate checking of peak levels.

Timer standby capability for automatic start of recording or playback using an AC timer

With the REC MUTE switch, you leave silent passages between program material

Output level control possible

Automatic input selector

Geared and oil-damped cassette holder

Large VU meters with backlight

 

 


Specifications

Type:  Stereo Cassette Deck

Track System:  4-track, 2-channel

Tape Speed:  1-7/8 inch/sec (4,8 cm/sec)

Frequency Response:

Metal Tape :  30 - 12 500 Hz ±3 dB (0 VU); 20 - 18 000 Hz (-20 VU)

SA/CrO₂ Tape :  30 - 8000 Hz ±3 dB (0 VU); 20 - 18 000 Hz (-20 VU)

Signal-to-Noise Ratio :  60 dB (from peak level, weighted, Metal tape)

The Signal-to-Noise Ratio is improved by 5 dB at 1 kHz and by 10 dB above 5 kHz with ANRS on (DIN 45 500 weighted)

Effect of Super ANRS (Normal tape)

Improvement of SN: the same as with ANRS

Improvement of Frequency Response : 

0 VU recording :  6 dB at 10 Hz

+5 VU recording :  12 dB at 10 kHz

Improvement of Distortion:

0 VU recording :  3% or less at 10 kHz

+5 VU recording :  3% or less at 10 kHz

Wow and Flutter:  0,055% (WRMS):  0,15%  (DIN 45 500)

Crosstalk:  65 dB (1 kHz)

Total Harmonic Distortion :  K3; 0,4%; T.H.D. 1,0% (metal tape, 1 kHz 0 VU)

Bias :  AC bias (85 kHz)

Erasure : AC erasure (85 kHz)

Heads : 

Rec/Playback :  Sen Alloy Head

Erasure :  Sen Alloy Head

Motor:  Electronic Governor DC motor

Fast Forward Time: 80 sec with C-60 cassette

Rewind Time :  80 sec. With C-60 cassette

Semiconductors: 5 ICs , 21 Transistors, 31 Diodes, ! SCR

Input Terminals Sensitivity/Impedance

Mic Jack x 2 :  0.2 mV (-72 dBs)

Matching Impedance :  600  - 10 k

Input Jack x 2

Min. Input Level : 80 mV (-20 dBs)

Input Impedance : 100 k

Output Terminals

Output Jack x 2

Output Level : 0 - 300 mV

Output Impedance : 5 k

Matching Impedance:  50 k  or more

Headphone Jack x 1

Output Level :  0,3 mW/8

Matching Impedance: 8  - 1k

Power Requirements:  AC 100/120/200/240  V, 50/60 Hz

Power Consumption:  12 W

Dimensions (W x H x D):  420 x 149 x 262 mm (16-9/16" x  5-7/8" x x 10-5/16")

Weight:  5,2 kg (11,4 lbs)


 

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