Aurex PC-X55AD
¥ 65,800 (around 1981)
Commentary
An adres mounted cassette deck that adopts a 2-motor IC logic mechanism.
As a noise reduction system, it is equipped with an adres unique to Aurex.
As for adres, the hissing, which was a major drawback of the cassette, has been greatly reduced, while at the same time the dynamic range has been expanded to achieve higher sound quality, while avoiding bleeding noise and distortion.
A 2-motor IC logic mechanism is used for the mechanism part.
In this mechanism, a two motor system is adopted in which an FG servo motor is provided for the capstan drive and a DC motor is provided for the reel drive. Compared with the general two motor system in which a dedicated capstan motor is used for both the winding and reel drive. This system is simpler than the conventional two motor system in which a dedicated capstan motor is used for both the winding and reel drive.
In addition, while reducing the number of rotating parts in the drive system, the accuracy of each part is also improved to ensure stability and quietness when the tape runs. This reduces the modulation noise of 200 Hz or higher generated by the modulation of the original signal caused by the tape or mechanical vibration.
IC logic control system is adopted in the operation part, and direct changes such as from fast forward to rewind and from rewind to play can be performed.
The recording / reproducing head uses an AS (All Sendust) head with a margin for maximum magnetic flux density. This head has a gap length of 1.0 microns to improve high-frequency characteristics.
Also, an AF head is used for the erasing head.
The read / write amplifier has a DC configuration without a coupling capacitor from each circuit.
In addition, we have reduced hum and noise by making recording and re-switching electronic and rationalizing the wiring and layout of each board.
Equipped with a pause / mute function that allows you to create a non-recording part with one touch by pressing the pause button.
Timer standby mechanism is adopted.
Auto repeat is possible.
Equipped with a wide range peak meter that covers -40dB to + 10 dB.
Equipped with a 4-stage tape selector with simultaneous Bias/EQ switching.
Equipped with an ASO sensor using a magnetic sensitive semiconductor.
Equipped with a tape counter.
Compatible with optional remote control.
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Model Rating
| Type | Cassette deck |
| Track system | Stereo |
| Recording system | AC Bias (85 kHz) |
| Recommended tape | MX, AX, AD, FeCr |
| Heads | Recording : Hyperbolic Shape AS Head Erasing : AF heads |
| Motor | Capstan motor Reel motor |
| Wow and flutter | 0.04%(WRMS) |
| Early Winding Time (C-60) | 80 seconds |
| Frequency response (MX) | 20 Hz to 20 kHz |
| Signal-to-noise ratio (adres in, AX) | 88dB |
| Dynamic Range (1 kHz, AX) | 103dB |
| Noise level | -80dB(100Hz) -90dB(1kHz) -93dB(10kHz) |
| Third harmonic distortion factor (adres in, 400 Hz) | 0.4% |
| Input terminal | Line : 70mV/50k Ω Mic : 0.25mV/600 Ω ~ 10k Ω |
| Output terminal | Line : 0.4V/50k Ω (Vol. max) Headphone : 0.25mW/8 ohm |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | AC23W |
| Maximum external dimensions | Width 420x Height 110x Depth 280 mm |
| Weight | 5.5kg |
| Sold Separately | Remote Control Unit RM-15S (¥ 9,000) |