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| Nakamichi 700II |
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| 210,000yen(1977 release) |
700 serieses aimed at the thing equipped also with beauty to 1000 serieses
which pursued the performance. A performance is not inferior to 1000 serieses,
either. These 700IBM PCN IIs were also a few 3 head cassette decks as that
time.
By adopting not a permalloy head head but SR head as the reproducing head, it succeeded in the lifetime of a head lengthening.
The crystal ferrite
head developed newly is adopted as the recording head.
Since a crystal
ferrite head has little RF loss, it is carrying out the bias operation
effectively in spite of the bias frequency as high as 105kHz. Moreover,
manipulation distortion was removed by the enhancement on a manufacturing
process, and the Focus and the good high region property have been strongly
acquired for the magnetic field in a very narrow span.
The temperature
rise was suppressed by carrying not an AC erasing but the crystal ferrite erase
head currently used conventionally in the erase head, and it succeeded in
raising an erasure efficiency ratio.
Moreover, this erase head has equipped
with the stainless tape guide up and down, and is raising the traveling accuracy
of a tapes.
At 700IBM PCN IIs, by adopting the air damper which uses a
cylinder, it considers so that a contact of a tapes and a head may be performed
slowly calmly.
Moreover, the air damper of a cylinder type is adopted also
like an eject of a tapes, and it can carry out variable [ of the eject velocity
] by a needle throttle.
The exact Dolbey level adjustment is possible in
400Hz and a 0dB testing tone.
By a blend mike input, five-channel mixing 3 yuan is possible.
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| Form |
Stereo cassette deck |
| Tape speed |
4.8cm/second |
| Wow and flutter |
0.05%or less Wrms |
| Frequency characteristic (A. B.L.E using)
|
35Hz-20000Hz±3dB
(Dolby system in, SX,
EX IBM PCN II tapes) |
| A comprehensive S/N ratio |
65dB
(Dolby system in and WTD rms --
distorted [ 3% ] 400Hz)
(Wrms. -- distorted [ 3% ] 400Hz) |
| A comprehensive distortion |
1.5% or less (400Hz, 0dB) |
| Cancellation ratio |
60dB or more (1kHz, saturation level)
|
| Channel separation |
35dB or more (1kHz, 0dB) |
| Crosstalk |
60dB or more (1kHz, 0dB) |
| Bias frequency |
105kHz |
| Input |
A mic, a blend mic, a DIN mic: 0.2mV, 10kohm
Line: 50mV, 50kohm |
| Output |
Line: 1V
Headphone: 40mW, 8ohms (1kHz,
0dB) |
| The semiconductor used |
Transistor: 138 pieces
IC: Nine pieces
Diode: 54 pieces |
| Power source |
100, 117, 220, 240V 50 / 60Hz
|
| Power consumption |
A maximum of 60W |
| Dimensions |
Width 520x height 267x depth of 130mm
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| Weight |
About 13kg |
| Option |
Remote Control unit RM-10 (9,000yen) |
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