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





Kenwood KW-4066

 Kenwood's KW-4066 is a durable 3-head, easy tape loading tape deck that performs according to the highest audio principles. With all-silicon transistor recording and playback pre-amplifiers, this unit can be easily panel-mounted to become the center of your hi-fi system. The KW-4066 offers a choice of three tape speeds, slide-type recording level control, tape monitor switch for recording quality cheks and independent left, right recording buttons.

Special Features
Specially designed pre-amplifier minimizes distortion during recording and playback to eliminate the "hiss" inherent in tapes at high frequencies, as well as hum modulation at lower frequencies.
 The KW-4066 incorporates a new, exclusive Kenwood tape transport system which features an auto-stop mechanism built into the head housing.  It simplifies tape handling considerably, and the tape can be loaded easily by one hand.
 Three tape speeds are available; 7-1/2 ips and 3-3/4 ips for high fidelity recordings and playback, 1-7/8 ips for speech.
 A slide-type level control similar to those used for mixing in broadcasting studio equipments can vary and increase recording qualities.
 Completely separated Left, Right, recording capabilities enable mixed "Sound with Sound" recordings. One channel can be used for recording while the other is being used simultaneously for playback.
 A Tape Monitoring Switch permits fast, easy means to check sound immediately before and after it is recorded during the recording process.
 The natural monaural sounds can be produced from 2-Track tapes by Mode Switch.
Specifications
Recording System:  4-Track Stereo/Mono recording and playback
Tape speeds:  7-1/2 ips, 3-3/4 ips 1-7/8 ips
Reels: 7" or smaller
Frequency Response:
25 - 20,000 Hz at 7-1/2 ips
25 - 12,000 Hz at 3-3/4 ips
25 - 6,000 Hz at 1-7/8 ips
Signal-to-Noise Ratio:  better than 50 dB
Harmonic Distortion (Preamp):  less than 0,6% at 0 dB. Recording Amp or Playback Amp
Wow and Flutter (Playback): 
At 7-1/2 ips :  less than 0,15% (RMS); 0,08% (WRMS)
At 3-3/4 ips : less than 0,25% (RMS); 0,10% (WRMS)
At 1-7/8 ips :  less than 0,35% (RMS); 0,15% (WRMS)
Recording Time (4-Track Stereo)
1,5 hrs at 7-1/2 ips
3 hrs at 3-3/4 ips
6 hrs at 1-7/8 ips
Fast Wind/Rwind Time:  within 150 sec. With 1200 ft tape
Level Indicator:  Two VU Meters
Inputs Sensitivity/Impedance: 
Mic :  63 dBs (0,6 mV)/ 50 k Ω
Line :  18 dBs (100 mV)/ 100 k Ω
Output Level/Impedance:
Line :  0 dBs (0,775 V)/ 100 k Ω
Headphone :  27,5 dBs (33 mV)/ 8 Ω or more
Equalizer:  NAB (Record and Playback)
Heads: 3 Heads - Playback (1,7 µ gap); Recording and Erase
Bias Frequency:  approx 85 kHz
Transistors:  16 low-noise silicon transistor
Diodes:  6
Operating Position: Horizontal or Vertical
Power Requirement:  110 - 120 V;  220 - 240V, AC 50/60 Hz
Dimensions (W x H x D):  16" x 7-1/16" x 12-11/16"
Weight:  22 lbs

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