Audio Database


AIWA AD-5500
57,800 yen(around the 1973 time)


The stereo cassette deck which measured stabilization of a mechanism and an electric circuit and gained little distorted sound quality.

FG (ferrite guard) head which uses super-hard ferrite excellent in antiwear quality even not only for a core part but for a guard part is carried in the head.

The large-sized flywheel with a weight of 270g and a diameter of 86mm is adopted, and rotational energy 2450gcm has been obtained.
Moreover, the 2.5mmphi capstan made from Shemagh of Germany is adopted.

The pinch roller holder axis is firmly fixed to a main chassis, the parallelism of a pinch roller and a capstan is kept exact, and the stable tape run can obtain.
Moreover, by developing and adopting the reel axis of special structure, while decreasing friction in a cassette half, stabilization of the tape run is measured, having applied the fixed back tension to the reel axis.

Electric stability is improved by adopting a regulated power supply as all the circuits.

The 3 steps of bias equalizer change mechanism in which an equalizer can be changed to bias according to the characteristic of each tape is carried.

By separating microphone volume and line volume, the signal to noise ratio is improved by 10dB at the time of the recording from a line.

The Dolby system is carried in order to reduce the hysteresis noise of a cassette tape.

+ Carry the large-sized VU meter which can be displayed to 6dB.

Rating of a mode
Form Stereo cassette deck
Truck form Four trucks [ two ]
Frequency response Normal tape: 30Hz - 12kHz
HiFi tape: 30Hz - 14kHz
CrO2 tape: 30Hz - 16kHz
Signal to noise ratio At the time of Dolby NR on: 60dB (CrO2 tape)
Wow and flutter 0.07%(WRMS)
Magnetic tape velocity 4.76cm/s
Rewinding time 95 seconds (C-60)
Fast forward time 95 seconds (C-60)
Recording system AC bias
Elimination system AC elimination
The tape which can be used C-30, C-60, C-90, C-120
Motor AC synchronous motor
Head Ferrite guard head (FGH)
The maximum Input sensitivity / impedance Line: More than 50mV / 100kohm
DIN: 0.1mV/2.5kohm
Media Interface Connector: 0.25mV/600 ohm - 10kohm conformity
A normal-output level / impedance More than Line and DIN:0.58V (Dolby level) / 50kohm
Headphone output: 8ohms
The semiconductor used Transistor: 36 pieces
FET: Two pieces
Diode: 21 pieces
LED: One piece
Thyristor: One piece
Barista: Two pieces
Power supply voltage AC100V, 50Hz/60Hz
Power consumption 15W
Dimensions Width 419x height 152x depth of 295mm
Weight 6.2kg
Attachment Dust cover
Connecting cord x2
Head cleaning stick