Aurex PC-X25AD
¥ 49,800 (around 1981)
Commentary
An adres loaded cassette deck that adopts a 2-motor IC logic new simple 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 new simple mechanism is used for the mechanism part.
This mechanism adopts a simple 2-motor system in which the capstan drive and the reel base drive are driven by independent motors respectively. In particular, by using a motor with less cocking for the reel base motor, torque unevenness is improved.
In addition, the automatic reverse take-up mechanism, which changes the take-up direction according to the rotating direction of the motor, uses a swing-head gear drive mechanism instead of the conventional reverse idler method. By adopting a high-precision gear and a design that does not require friction in the reverse mechanism, the rotational control capability of the motor for driving the reel stand is improved. In addition, by laying out the main rotating shaft on the same chassis, the accuracy of the rotating system is improved and modulation noise is reduced.
The Super AP (High-AP (High-B Hard Permalloy) head with a high maximum magnetic flux density and a wide magnetic saturation level. This head uses a hyperbolic shape to improve the head touch and provides sound quality with little level fluctuation and little distortion.
Uses IC logic control with self-illuminated operation buttons.
Equipped with pause / mute function.
Timer standby mechanism is adopted.
Equipped with auto-repeat function.
Equipped with a backlighting type peak meter of -40dB to + 10 db.
It has an output volume.
Equipped with Dolby NR as a noise reduction system.
A DC configuration is used for the read / write amplifier section.
When the input selector is set to the FM position, the MPX filter operates to suppress noise outside the audible frequency band.
The microphone terminal is mounted on the back.
Compatible with optional remote control.
Model Rating
| Type | Cassette deck |
| Track system | Stereo |
| Recording system | AC Bias (85 kHz) |
| Recommended tape | MX, AX, AD |
| Heads | Recording : AP heads Erasing : AF heads |
| Motor | Tape drive motor Mechanical button drive motor |
| Wow and flutter | 0.05%(WRMS) |
| Early Winding Time (C-60) | 90 seconds |
| Frequency response (MX) | 20 Hz to 18 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) | 0.3% |
| Input terminal | Line : 70mV/50k Ω Mic : 0.25mV/600 Ω ~ 10k Ω |
| Output terminal | Line : 0.4V/50k Ω (Vol. max) Headphone : 0.5mW/8 Ω |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | AC10W |
| Maximum external dimensions | Width 420x Height 110x Depth 275 mm |
| Weight | 4.4kg |