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-10 cassette deck

The KD-10 is priced even lower than other JVC decks, but still includes the following features; 5-LED Peak Indicator, a Timer Standby Facility, Automatic Input Selector, JVC's electronic governor motor and more. In line with other, more expensive decks, performance parameters - such as a high Signal-to-Noise Ratio (56 dB from peak level, weighted) - guarantee long years of musical enjoyment. The KD-10 is a high value, high performance deck at a budget cost.

 

New Circuity

JVC's KD-10 includes an IC sized Dolby circuit to reduce annoying tape hiss. This IC form circuit is direct coupled, a highly precise configuration which makes for excellent transient characteristics. Likewise, the KD-10's microphone amp is of an advanced 2-stage direct-coupled design in low-noise IC form.  And to improve its Signal-to-Noise Ratio and dynamic range, the amp is separate from the line input. The result; high record amp linearity and only negligible distortion of even high-frequency signals.

 

Designed for Wide Dynamic Range Recording

Similar to more expensive JVC decks, the KD-10 has an Automatic Mic/Line Input to help lessen distortion and to expand dynamic range. Three-positioned Bias and Equalization switches allow the KD-10 to accept any type of tape on the market. And with the added assistance of JVC's 5-LED Peak Indicator and new and large VU meters (which even compensate for temperature changes) you can create true-to-life recording with a wide dynamic range

 

Convenience Features

A reed-type fully-automatic stop mechanism protects tapes and pinch roller from disfiguration. It also prevents the deterioration of wow and flutter with the passage of time. And speaking of time, the KD-10 includes a Timer Standby mechanism which lets you record unattended or awake to music. You can also make direct mode changes without going through Stop. The JVC Gear Oil-Damped Cassette Lid and more

 

Accurate Tape Transport

Tapes are unspooted by a precision-finished capstan (ground to a roundness of 01 µ), which is coupled to a large, dynamically balanced, 80 mm flywheel, driven by a precision ground belt. It contributes to the low wow/flutter.

 


Specifications

Type:  stereo cassette deck

Track System:  4-track, 2-channel

Motors:  Electronic DC motor x 1

Tape Speed:  4,8 cm/sec

Recording Time:  2x30 minutes with C-60 cassette

Fast Forward/Rewind Time:  85 sec with C-60 cassette

Heads: 

Recording/Playback :  Cronios head

Eraser: 2-gap , Ferrite head

Bias:  AC bias (95 kHz)

Erasure:  AC erasure (95 kHz)

Frequency Response: 

SA/CrO₂ :  30 - 16,000 Hz (Nominal); 40 - 15,000 Hz (Typical)

SF/Norm :  30 - 15,000 Hz (Nominal); 40 - 14,000 Hz (Typical)

Signal-to-Noise Ratio

56 dB from peak level, weighted

60 dB with Dolby NR (DIN 45 500 weighted)

The Signal-to-Noise Ratio is improved by 5 dB at 1 kHz and by 10 dB above 5 kHz with Dolby NR on.

Wow and Flutter:  0,06% (WRMS) ±0,2 % (DIN 45 500)

Crosstalk:  65 dB

Total Harmonic Distortion :  1,3% ( 1khz, 0 VU, Normal tape)

Input Senseitivity/Impedance:

MIC :  0,2 mV/600  - 10 k

Line :  80 mV/100 k

Output Level/Impedance

Line :  410 mV/3 k

Matching Impedance :  50 k  or more

Headphone :  0,3 mW/8   - 1 k

DIN Socket

Min. Input Level :  0,1 mV./k

Input Impedance :  10 k

Output Impedance :  3 k

Semiconductors:  6 ICs; 1 SCR; 12 Transistors , 31 Diodes

Power Requirements: AC 120 V, 60 Hz (KD-10 C/J); AC 240/220/120 V 50/60 Hz (KD-10 A/B/E)

Power Consumption:  11 W

Dimensions (W x H x D):  420 x 149 x 264 mm (16-9/16" x 5-7/8" x 10-7/16")

Weight:  5,3 kg (11,7 lbs)


 

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