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AIWA AD-6900U

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Technic details

Specifications

Type:
Stereo Cassette Deck with built-in FRTS (Flat Response Tuning System)
Track System:
4-track, 2-channel
Tape Type:
Normal
CrO2
FeCr
Motors:
For Capstan drive - 38 pulse FG servomotor x 1
For Reel drive-DC servomotor x 1

Heads:
Combination Recording / Playback V-cut ferrite head x 1
Erasure double cap ferrite head x 1
Frequency Response:
20Hz to 16kHz (Normal tape)
25Hz to 14kHz, +2 -3dB (Normal tape)
20Hz to 19kHz (CrO2 tape)
25Hz to 17kHz, +2 -3dB (CrO2 tape)
20Hz to 20kHz (FeCr tape)
25Hz to 18kHz, +2 -3dB (FeCr tape)
Noise Reduction:
Dolby B
S / N Ratio:
68dB (FeCr, Dolby On)
Distortion:
0.9% (FeCr, 400Hz)
Wow and Flutter:
0.04% (WRMS)
Tape Speed:
4.8 cm / sec.
Fast Forward Time:
65 sec. (C-60 Cassette tape)
120 sec. (Cue, C-60 Cassette tape)
Rewind Time:
65 sec. (C-60 Cassette tape)
120 sec. (Review, C-60 Cassette tape)
Recording System:
AC bias (105kHz frequency)
Erasure System:
AC erasure
Input Sensitivity / Impedance:
Max. 0.25mV / 200Ω - 10kΩ matched (MIC)
Max. 75mV / Over 50kΩ (Line)
Output Level / Impedance:
0.41V (0 VU) / Over 50kΩ (Line)
8Ω - 150Ω (Headphones)
Semiconductors Used:
IC’s x 13
Transistors x 150
Diodes x 85
FET’s x 12
LED’s x 6
Accessories:
Stereo pin cords x 2
Head cleaning stick
Screwdriver

Power supply voltage:
AC 120V, 60Hz
Power consumption:
26W
Dimensions (W x H x D):
450 x 120 x 327mm
Weight:
9.5kg
Year:
1978

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