AKAI HX-R40
¥ 54,800 (around 1985)
Commentary
Reverse deck inheriting the basic performance of GX-R70 and GX-R60
The head part is equipped with HD head (High Density Metallic Head).
AKAI's proprietary accurate reverse head system is used for the reverse mechanism.
In this mechanism, high-hardness zinc die-cast containing beryllium is adopted as the head housing material, and the head position is maintained with high precision by excellent characteristics such as 2 times the hardness and 8 times the abrasion resistance compared with ordinary zinc die-cast.
The rotating part is coated with a smooth solid lubricant to a thickness of several microns to greatly reduce the friction coefficient and achieve smooth rotation.
In addition, in order to maintain accurate azimuth system in both directions, stainless steel with high-hardness surface nitriding treatment is used for stopper, and loosening of adjustment screws, which becomes a problem in long-term use, is dealt with by double nut system.
As for the rotation of the head, it is a double pinion drive in which the rack with especially low friction coefficient is quickly shifted to right and left by the motor drive, and a simple and complete rotation mechanism is realized.
The Bi-directional Symmetrical Precision (BSP) mechanism is used for the mechanism part. In this method, the tape transport is almost perfectly symmetrical so that the reciprocating tape running characteristics can be made uniform.
In addition, it is equipped with a dual-wide tape guide unique to AKAI. The contact surface with the tape is a wide R surface. The tape guide system that separates the left and right sides of the head increases the line strength of the tape edge. It accurately controls the tape running near the head, and the slight difference in the tape running characteristics between the round and the round is close to 0. In addition, it is able to cope with the variation of the cassette half that cannot be prevented by the normal tape guide that only adheres sheet metal to the side of the head. It also solves problems such as tape curl, track shift, azimuth shift, uneven head touch, and high tape.
A Dolby B/C is installed as a noise reduction system.
Equipped with IPLS (Automatic Tracking Mechanism), you can track the next song or the song being played.
Equipped with auto-mute mechanism, you can create a space between songs of about 4 seconds.
Model Rating
| Type | Cassette deck |
| Wow and flutter | 0.05%WRMS(JIS) ± 0.07% W. Peak (EIAJ) |
| Frequency characteristic | 20 Hz ~ 17 kHz ± 3 dB (Normal Tape) 20 Hz ~ 18 kHz ± 3 dB (CrO2 Tape) 20 Hz ~ 19 kHz ± 3 dB (Metal Tape) |
| Distortion Factor (EIAJ) | 0.85% (Metal Tape) |
| S / N ratio (metal tape) | 56dB(EIAJ) Dolby B on : 5 dB improvement at 1 kHz, 10 dB improvement at 5 kHz or higher Dolby C on : 15 dB at 500 Hz, 20 dB at 1 kHz to 10 kHz |
| Dynamic range | 110 dB (when using dbx NR) |
| Heads | Read / Write Head : HD Head Erase Head x1 |
| Motor | For Capstan : One electronically controlled DC motor For Cam Drive : 1 DC Motor |
| Input level | Line : 70mV/47k Ω Mic : 0.25mV/5k Ω |
| Output level | Line : 388mV/2k Ω or less Headphone : 1.3 mw (8 Ω) / 82 Ω |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 14W |
| Maximum external dimensions | Width 440x Height 110x Depth 250 mm (EIAJ) |
| Weight | Approx. 4.3 kg |
| Attachment | Connection code x2 |
| Sold Separately | Wireless Remote Control RC-92 (¥ 18,000) Wired Remote Control RC-32 (¥ 6,000) |