DIATONE DP-84DA
¥ 41,800 (around 1978)
Commentary
An auto-player system that omits some functions of the DP-86DA.
The tone arm is equipped with a counter-weight resonance prevention mechanism to prevent sharp resonance that occurs in the pipe and head shell. In addition, the counter-weight has a double structure and a rubber damper is installed between the counter-weights to improve sound resolution in the low frequency range.
A 12-pole 24-slot brushless servo motor is used as the drive motor.
Equipped with auto mechanism, Oatley turn and auto cut are possible.
All control levers are centrally located in the front of the cabinet and can be operated with the dust cover closed.
The cabinet is molded with iron powder and a large insulator is used to suppress howling.
Equipped with anti-skating mechanism and oil dump-type arm lifter.
Model Rating
Type | Full auto player |
<Turntable portion> | |
Drive system | Direct drive system |
Motor | 4-phase 12-pole 24-slot brushless DC servo motor |
Turntable | 324 mm Aluminum Alloy Die-cast, 1.3 kg |
Number of revolutions | 33 1/3, 45 rpm |
Rotational speed fine adjustment range | Within ± 3% |
Wow flutter | 0.03% or less (WRMS) |
Signal-to-noise ratio | 60 dB or more (IEC-B) |
Tone Arm Section | |
Type | Static Balance Type / Universal S-shaped Pipe Arm |
Total Length | 315mm |
Effective length | 227mm |
Overhang | 14mm |
Tracking error angle | + 2.9 °, -1.5 ° |
Offset Angle | 22 ° |
Needle pressure adjustment | Direct Reading Type 0 ~ 3g (0.1g Step) |
Cartridge Section | |
Type | MM Type (MAG44) |
Needle to be used | 3D-44M (0.6 mil Diamond Needle) |
Proper needle pressure | 2g |
Output voltage | 3mV |
Frequency characteristic | 20 Hz to 20 kHz |
Compliance | 7x10-6cm/dyne |
Head shell | Aluminum Die-cast |
<General> | |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 5W |
External dimensions | Width 478x Height 149x Depth 383 mm |
Weight | 9kg |
Attachment | 45 Rotation Adapter |