NICORDER 750 TAPE / PHONOGRAPH INFORMATION
REFERENCE PAGE
(Unrelated photo to be replaced)
(Unrelated photo to be replaced)
Construction started 5/19/19:
This page is dedicated to one of the 'coolest',
vintage reel to reel decks we have crossed paths with. A Nicorder model
750 Stereo Tape Recorder w/ built-in 4-Speed Phonograph, 'Transcription
Tone Arm' and 8mm Film Synchronizer. It also features built-in
Stereo-Tube Amplifier and matching Speakers. At this writing it also
appears to have been associated with early Akai. Built by Nishikura Tape
Recorder Co., LTD in Japan. Circa...We are working on reconstructing the
owners manual, brochure, specification sheet, and related paper work
(they were damaged and the pages 'welded together' (appears to be with
'mouse pee'. yes we have to do some 'gross stuff' here). At some point
we also hope to restore / refurbish / bring back to life the Nicorder
model 750 reel to reel / phonographe / tube amplifier unit.
This appears to be from Circa 1961. This unit was likely purchased in
Tokyo, Japan and brought over to America by a GI stationed there.
NICORDER 750 FEATURES:
-
Stereo Record and Playback on 4-Tracks
- Monophonic record and Playback on 4-Tracks
- Stereo Phonograph with Simultaneous Recording Available
- Your voice may be recorded while taping from Phonograph
- Can be used as a public address system, with Simultaneous Recording
Available
- Built-in Stereo Recording / Playback 2-Channel Pre-Amplifiers, plus
2-Channel 4 Watt Amplifiers (Tube)
NICORDER 750 SPECIFICATIONS:
UNDER CONSTRUCTION 5/19/19
Recording Track / Head / Head-stack Format: Inline (4-track
/ 4-channel, stereo / monaural
system) AC Bias
Ferrite Erase and 'Permalloy' Record and Playback heads
Motors: 3X. Capstan motor: 4/8 pole, large size Hysteresis
synchronous. Reel motors: 6-pole, eddy current
Reel Size: 7” max
Tape Speeds: 3.75 ips or 7.5
ips (can be adjusted from ??ips
Max to 2.75ips min by Variable Speed Regulator
Phonograph Speeds: 78RPM, 45RPM
& 33.3 RPM (16RPM???)
Tape Speed accuracy: 0.5%
Frequency Response:
40-16,000 Hz @ 7.5ips.
50-10,000
Hz @ 3.75ips.
Wow and Flutter: <3% @ 3.75ips
& <2% @ 7.5ips
S/N ratio: >45dB
Crosstalk; >50dB down adjacent track
Record Level Indicator: Dual VU Meters
THD: <1% @ 0VU & @ 1kHz. 3% @ +9VU & @ 1kHz
VU Meters; approx; -25dB
to +5dB VU range
Bias Frequency; 100kHz
Line Input: Impedance 'High'
Microphone Input: 50kΩ
Record Level Calibration: 0 VU reference is 250 nWb/m (nano-Webers
per meter) tape flux level; adjustable LED’s preset to turn On at signal
level of +10 VU.
Line Output: -10dB (0.3V) nominal & -+18dB (8.0V) nominal /
Impedance 10kΩ unbalanced
Fast Wind Time: Approx 120 Seconds for 1200'
Tube Compliment: 2x
"6AU6", 4x 12AX7, 2x "6AQ5", 1x 6AR5 & 1x
"5RK16"
Start Time (stop to full motion play): .05 sec @ 15ips & .04 sec
@ 7.5 ips
Output Power (Amplifier) 4W
/ Channel
AC Power Requirements: 50
& 60Hz, ??"V
& 180 Volt Ampere Max
Dimensions & Weight (Tape
Deck): 20"
W x ??"D x 9" H
& 48 lbs
Dimensions & Weight (Speakers
clipped together as a pair): 15"
W x ??"D x
12.5" H & 19 lbs
(Unrelated photo to be replaced) (Unrelated photo to be replaced)
(Unrelated photo to be replaced) (Unrelated photo to be replaced)
