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AKAI M-9

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Technic details

Specifications

Type:
Tape Recorder
Tape speed:
4.75 cm / s
9.5 cm / s
19 cm / s
38 cm / s (Possible with attached adapter)
Wow flutter (Regenerative only):
0.15% RMS or less (19 cm / s)
0.25% RMS or less (9.5 cm / s)
0.35% RMS or less (4.75 cm / s)
Frequency response:
30Hz to 23kHz, ±3dB (19 cm / s)
30Hz to 18kHz, ±3dB (9.5 cm / s)
30Hz to 9kHz, ±3dB (4.75 cm / s)
Total harmonic distortion factor:
2% or less (1kHz, 0 VU)
S / N ratio:
50dB or more
Input level:
Mic - 0.5mV or more
Line - 60mV or more
Output non-distortion output (maximum):
15W + 15W
Music power:
20W + 20W
Recording (reproduction) compensation characteristics:
NARTB characteristics
Recording level instruction:
VU meter x 2
Recording system:
4 track stereo / monaural, cross field bias system (Japanese Patent No. 451906)
Fast forward, rewind method:
Each 90 sec. (370m tape, 50Hz)
Each 75 sec. (370m tape, 60Hz)
Recording time:
Stereo - 8 hours (370m tape, 4.75 cm / s)
Monaural - 4 hours (370m tape, 4.75 cm / s)
Head recording / reproducing head:
4 track stereo / monaural (1.2kΩ at 1kHz)
Bias head:
4 track stereo (500Ω, at 60kHz)
Erase head:
4 track stereo (500Ω, at 60kHz)
Motors:
Hysteresis synchronous 2 speed motor x 2
Speaker:
10cm cone type x2
Semiconductor used:
Transistor - 20 pieces
Thermistor - 4 pieces
Rectifier - 4 pieces
Attached:
7 type demonstration tape x 1
No. 7 Soru Reel x 1
Adapter kit for 38 cm / s x 1
Pad for tape cleaner x 2
Silicone oil x 1
Fuse (for amplifier) x 2
Fuse (for power supply) x 1
Power supply voltage:
AC 100V to 240V, 50Hz / 60Hz (6 stages switching between)
Power consumption:
100 VA
Outer dimensions (W x H x D):
340 x 508 x 240mm
Weight:
19kg
Year:
1960

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