SANSUI DZ - α 507R
¥ 49,800 (around 1989)
Commentary
A stereo cassette deck equipped with Dolby HX-PRO.
Equipped with the Dolby HX-PRO, it provides an appropriate effective bias according to the amount of high-frequency components and improves the recording capability in the high-frequency range. In the low-frequency range, low distortion and good MOL (maximum output level) can be obtained.
In addition, the effective bias is maintained to minimize the phase shift and maintain the sense of orientation.
The head uses an amorphous head with excellent magnetic properties.
The head coil uses OFC (oxygen-free copper wire) to reduce transmission distortion, and combined with Dolby HX-PRO to improve high-frequency characteristics.
In order to draw out the capabilities of various types of tapes and tapes with different characteristics, it is equipped with an auto-bias function. This function records and reproduces the signal when the key is pressed, and the optimum bias for the balance of frequency characteristics and distortion is automatically set in approximately 25 seconds.
It is equipped with a unique CDFC (Computerized Dual Function Control) which condensed various functions.
By eliminating the special mode key and compound operation of the basic operation key without the special mode key, it has achieved the most multi-function in its class.
Equipped with tape lead-in, auto-rec mute, 20-track AMPS, rec cancel, bi-directional music scan, 1-track / all-track repeat, memory stop, and LR independent microphone input.
The recording amplifier uses a constant current drive circuit that eliminates output resistance because the head drive current is constant regardless of impedance changes due to changes in the recording frequency. This greatly improves the dynamic range, prevents phase degradation, and provides a stable sense of localization.
Since the playback amplifier is directly connected to the head, coupling capacitors, which adversely affect sound quality, are eliminated.
In order to ensure a stable power supply and eliminate mutual interference between each unit, the power supply unit is composed of four independent power supplies, each of which is a recording / playback amplifier, a bias transmitter, a mechanical drive unit and an FL display unit.
There was a side wood sold separately.
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Model Rating
| Type | Auto-reverse stereo cassette deck |
| Heads | Recording / Playback : one amorphous OFC coil head Erase : 1 x Double Gap Ferrite |
| Motor | For Capstan : 1 DC servo motor For Reel : 1 DC Motor |
| Wow flutter | 0.05%W.RMS ± 0.1% W. Peak |
| Early winding time | Approximately 90 seconds (C-60) |
| Frequency Response (-20dB Recording) | Metal Tape : 20 Hz ~ 21 kHz (30 Hz ~ 20 kHz ± 3 dB) Chrome Tape : 20 Hz ~ 19 kHz (30 Hz ~ 18 kHz ± 3 dB) Normal Tape : 20 Hz ~ 18 kHz (30 Hz ~ 17 kHz ± 3 dB) |
| S / N ratio (metal tape) | Dolby NR Off : 58 dB or more (EIAJ) Dolby B NR On : 65 dB or more (5 kHz) Dolby C NR On : 75 dB or more (1 kHz) |
| Output Level / Impedance | Line : 360V/47k Ω Headphone : 0.6mW/8 Ω |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Rated power consumption | 20W |
| External dimensions | Width 430x Height 126x Depth 296 mm |
| Weight | 4.5kg |
| Sold Separately | Real Sidewood SW-DZ1 (¥ 10,000) |