Audio Database

The

DIATONE DP-86DA
49,800yen(around the 1978 time)

Description
 
It is the full auto player system which adopted the direct-drive system.

By carrying the prevention mechanism from a vibration of a balance weight in a tone arm, the sharp vibration generated in a pipe or a head shell part is prevented. Furthermore, the balance weight was made into dual structure and the damper of rubber is incorporated between them. Thereby, the resolving power of the sound in a low-pitched sound region is raised.

The 12 pole 24 slot brushless servomotor is adopted as a drive motor.

The auto mechanism is carried and an auto start, the Ohtori turn, an auto cut, and auto-repeat are possible.
Moreover, a set of the record size to perform has adopted the mechanism which the number of rotations of a turntable determines automatically.

Intensive arrangement of all the control levers is carried out in the front of the cabinet, and operation is possible shut [ the dust cover ].

A cabinet is used with the fabrication containing iron powder, and howling is suppressed by employing a large-sized insulator further.

The arm lifter of an anti skate mechanism or an oil dumping type is carried.


Rating of a mode
Form Full auto player
<Turntable part>
Drive system Direct-drive system
Motor 4 phase 12 pole 24 slot, a brushless DC servo motor
Turntable The product made from 324mm aluminum alloy die-casting, 1.3kg
Number of rotations 33 1 / 3 or 45rpm
Number-of-rotations fine-tune range Less than ±3%
Wow and flutter 0.03% or less (WRMS)
Signal to noise ratio 60dB or more (IEC-B)
<Tone arm part>
Form A static balance type and a universal S character pipe arm
Full length 315mm
Active length 227mm
Overhang 14mm
Tracking error angle + 2.9 degrees-1.5 degrees
Offset angle 22 degrees
Needle pressure adjustment Direct-reading types 0-3 g (0.1g step)
<Cartridge part>
Form MM type (MAG44)
The needle used 3D-44M (0.6mil diagram needle)
Proper needle pressure 2g
Output voltage 3mV
Frequency response 20Hz - 20kHz
Compliance 7x10 to 6 cm/dyne
Head shell The product made from aluminum die casting
<Synthesis>
Power source AC100V, 50Hz/60Hz
Power consumption 5W
Dimensions Width 478x height 149x depth of 383mm
Weight 9kg
Attachment 45 rotation adapter