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

NAKAMICHI 1000 Tri Tracer

MkI 1973-1977, MkII 1977-1980
The world's first 3-head cassette deck with quality and performance comparable to the professional 15 ips. reel-to-reel deck. NAKAMICHI RESEARCH INC. has finally overcome the fundamental handicaps of cassette tapes - such as 1 - 7/8 ips. tape speed and 0,6 mm track width restricting the available electro-magnetic energy to less than 10% of that of the reel-to-reel tape - with the high precision tape transport mechanism, sophisticated circuitry, specially designed heads and many other advanced features which assure the easiest and foolproof operation with the highest level performance.
Is a pet name created by NAKAMICHI RESEARCH INC. for a series of professional quality 3-head cassette decks starting from Nakamichi 1000 as a top of the line. "Tri-Tracer" is a 3-head system which traces the fundamental performance of the tape deck in terms of frequency response, distortions, signal-to-noise ratio and wow and flutter with the highest possible standards.

Closed loop double capsta, staggered large flywheels maintain perfect tape tension across the 3-heads with ultra-low wow and flutter. Also phonic-wheel type DC servomotor maintains correct speed at all times against voltage and frequency fluctuation.
All tape motion controls are solenoid operated, with light finger touch buttons. IC control logic circuit produces any sequence control of complicated timing which assures the user copmplete freedom from click noise. Other automatic controls such as automatic shut-off, memory rewind, automatic rewind and record lock are also provided. The position in motion will be indicated by illuminated lamps above each control button.

A unique and simple way in which a pair of pilot lamps flicker alternately when a correct head azimuth alignment is obtained. It eliminates the poor high-end response and phase shift created by the change in tape running condition due to dimensional difference among various brands cassette tape enclosures.

Completely separate record, playback and erese heads configuration permits instantaneous off-the-tape monitoring and ensures the best possible frequency response, up to 20 kHz constantly. The record head is ofhi-Mu ferrite with a 5 micron gap designed to obtain deep and intensive recording. The playback head is of special hi-Mu hard permalloy cores and thin titanium film spacer which enables the gap to be as narrow as 0,7 micron.

The Nakamichi 1000 is also unique in having two independent noise reduction systems, the one is the Dolby NR system and the other is the Dynamic Noise Limiter (DNL) system. By using two suppressed by more than 13 dB. The Dolby NR system has independent circuitry in recording and playback and instant monitoring of Dolbyized recording is available. The DNL system works inthe playback mode and effectively suppress the noise in the frequency range of around 10 kHz.

Any speed within the range of ±6% can be selected. This control is for correction of tape speed previously recorded off speed, and for playback at higher and lower pitch in music lessons and other wide applications.

Although the record amplifier in the Nakamichi 1000 has very wide dynamic range so that the distortion may hardly occur in normal sound recording.However in case oflive recording the distortion may occur due to excessively wide dynamic range of sounds to be recorded, and the built-in PEAK LIMITER minimizes such distortion.

The Nakamichi 1000 is equipped with level meters indicating the peak level in recording so that they effectively eliminate the risk of over-recording.

other than the normal two microphone inputs the third input for the blend microphone is provided andeach input level can be adjusted independently sothat the professional quality mixing is available. The blend microphone is especially useful for recording of solo vocal or solo instrument.

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