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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 KD-A5 cassette deck

Features

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

Full logic control of the two-motor tape mechanism

SEN-ALLOY heads for Rec/Playback and Erase. (An SA erase head with high erase efficiency is used so that Metal Tape can be erased)

IC-constructed ANRS (Automatic Noise Reduction System) and Super ANRS

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

5-point multi-peak level indicator

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

Remote control terminal (for the optional remote control unit R-30E)

 

 

Specifications

Type:  Stereo Cassette Deck

Track System:  4-track, 2-channel

Motor: 

Capstan :  FG servo DC motor

Reel :  DC motor

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)

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 S/N: 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 lesss at 10 kHz

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

Wow and Flutter:  0,04% (WRMS):  0,14%  (DIN 45 500)

Crosstalk:  65 dB (1 kHz)

Total Harmonic Distortion :  K3; 0,4%; T.H.D. 10% (metal tape, 1 kHz 0 VU)

Bias :  AC bias (85 kHz)

Erasure : AC erasure (85 kHz)

Heads : 

Rec/Playback :  Sen Alloy Head

Erasure :  2 Gap Sen Alloy Head

Tape Speed:  4,76 cm/sec ±2%

Fast Forward Time: 85 sec wirh C-60 cassette

Rewind Time :  85 sec. With C-60 cassette

Playback Torque: 40 - 70 gr. /cm

Bias Frequency:  85 kHz

Semiconductors: 10 ICs (1 hall element), 58 Transistors, 40 Diodes (4 zener diodes), 9 LED

Input Terminals Sensitivity/Impedance

Mic Jack x 2 :  0.2 mV (-72 dBs)

Matching Impedance :  600 Ω  - 10 k Ω

Line In x 2

Min. Input Level : 78 mV (-20 dBs)

Input Impedance : 100 k Ω

Output Terminals

Line Out Jack x 2

Output Level : 0 - 0,3 V

Output Impedance : 3 - 6  k Ω

Matching Impedance:  50 k Ω  or more

Headphone Jack x 1

Output Level :  0,3 mW/8 Ω

Matching Impedance: 8 Ω  - 1k Ω

DIN Socket: 

Min. Input Level 0,1 mV/k Ω

Output Level :  0-300 mV

Output Impedance :  5  k Ω   

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

Power Consumption:  29 W

Dimensions (W x H x D):  420 x 120 x 300 mm (16-1/2" x 4-3/4" x 11-7/8")

Weight:  6,8 kg (14,96 lbs)


 

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