Tri-Tracer
3-Head Cassette System
Nakamichi
700 is our challenge to the highest performance comparable to Nakamichi 1000
which has created sensations in the hi-fi industry and to the easier-to-buy
pricing as a result of Nakamichi's efforts in production rationalization.
Nakamichi 700 is accepted by the audiophiles in its highest cost performance as
the basic design policy of the Tri-Tracer rules the entire transport mechanism
and electronics without compromise.
Since the
introduction of Nakamichi Tri-Tracer the cassette recorders have now been
accepted by the professionals and audiophiles as the true hi-fi component same
as the reel-to-reel tape decks in terms of frequency response, dynamic range,
wow and flutter, tape speed accuracy, signal-to-noise ratio, etc.
"Hearing
is believing" - please confirm the
top performance of Nakamichi 700 by your simple hearing test which can only be
achieved with the true 3-head cassette recorder Nakamichi 700
"Tri-Tracer"
is a pet name created by Nakamichi Research Inc. for a series of professional
quality 3-head cassette decks starting from Nakamichi 1000 as 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.
Complete
Plug-in Electronics
Electronics
circuitry eliminates all connecting wires with a complete plug-in system
consisting of six printed circuit boards plugged onto a single main circuit
board. Each unit amplifier is using the top quality transistors and assures the
best possible performance … the microphone amplifier with 60 dB dynamic range
is one example.
Features
3-Head
Configuration
Completely
separate record, playback and erase heads configuration permits instantaneous
off-the-tape monitoring and ensures the best possible frequency response, up to
20 kHz constantly. The record head is of hi-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.
Alignment
Beacon
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
dimansional difference among various brands cassette tape enclosures.
Tape Drive
Mechanism
Closed loop
double capstan, 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.
Peak Limit
Although the
record amplifier in the Nakamichi 700 has very wide dynamic range so that the
distortion may hardly occur in normal sound recording. However, in case of live
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.
dB Peak
Level Meter
The
Nakamichi 700 is equipped with level meters indicating the peak level in
recording so that they effectively eliminate the risk of over-recording.
3-Point
Sound Pickup
Other than
the normal two microphone inputs the third input for the blend microphone is
provided and each input level can be adjusted independently so that the
professional quality mixing is available. The blend microphone is especially
useful for recording of solo vocal or solo instrument.
Pitch
Control
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.
IC Logic
Electronic Control
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 complete freedom from click noise. Other automatic controls
such as automatic shut-off, memory rewind, and record lock are also provided.
The position in motion will be indicated by illuminated lamps above each
control button
Other
Features:
Dolby Noise
Reduction System
Two-Motor
Drive System
Tape
Selector Switch for Low Noise and Cromium Dioxide Tape
Built-in
Dolby level Adjustment Device
Pneumatic
Controlled Anti-boucing Head Assembly System
Pneumatic
Controlled Cassette Ejecton.
Specifications
Heads: 3 separate for record, playback and erase
Motor: DC servomotor
Tape
Speed: 1-7/8 ips ±1%
Wow and
Flutter: less than 0,12% (DIN 45507
weighted peak)
Frequency
Response:
35 - 18,000
Hz ±4 dB (Dolby In, Low noise tape)
35 - 20,000
Hz ±4 dB (Dolby In, CrO₂ tape)
Signal-to-Noise
Ratio: better than 60 dB (Dolby In, DIN
45405 weighted at 3% Distortion)
Total
Harmonic Distortion: less than 2% (at 1
kHz, 0 db)
Erasure: better than 60 dB (at 1 kHz, saturation
level)
Channel
Separation: better than 35 dB (at 1 kHz, 0 dB)
Cross
Talk: better than 60 dB (at 1 kHz, 0 dB)
Bias
Frequency: 105 kHz
Input:
Microphone
: 0,5 mV/600 Ω
Blend
Mic. : 0,5 mV/600 Ω
DIN
Mic. : 0,5 mV/600 Ω
Line
: 100 mV/100 k Ω
DIN
Radio : 25 mV/50 k Ω
Output:
Line : 1,0 V Max. (variable)
DIN Line :
1,0 V Max. (variable)
Headphones
: 1 mW 0 dB
Semiconductors: 105 Transistors; 38 Diodes; 8 IC's
Power
Supply: 100/ 117/ 220/ 240 V, 50/60 Hz
Power
Consumption: 60 W Max.
Dimensions
(W x H x D): 20,5" x 10,7" x
5,1"
Weight: 28 lbs
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