¥ 130,000 (around 1980)
A full auto player based on DP-EC1mkII with further improvements.
An electronically controlled full-auto mechanism allows all tone arm operations to be controlled simply by pressing the operation buttons. In addition, a single-chip LSI circuit is used for quick and accurate response.
It uses an automatic record size detection mechanism by applying an optical system.
In this system, the reflector emits light from obliquely above and guides the light from the turntable seat reflector to the sensor. This light is emitted or blocked depending on the size of the record and changes the output of the sensor. This output is sent to a logic circuit that automatically detects the record size.
Based on the detected record size, the needle down position and rotation speed are automatically determined.
Equipped with a quick response function, it operates while always detecting the condition of the arm lifter and arm. Therefore, it is possible to perform auto operation from any position. Thus, even when the arm is ascending or descending in auto operation, if you indicate the next new operation with the button, it will move immediately to that operation.
For button operation, feather touch type using micro switch is adopted.
Equipped with a muting mechanism to cut noise.
In order to suppress the resonance of the tone arm, a weight case and a butyl rubber damper are added to the structure of the needle pressure knob and main weight, and an anti-resonance filter is adopted. In addition, by expanding the span of the pivot, looseness of the pipe part is eliminated, and high sensitivity is achieved in both vertical and horizontal directions.
The tone arm is driven by a dedicated motor that is independent in both horizontal and vertical directions.
Titanium alloy is used for the material of the tone arm.
Special coated OFC (oxygen-free conductor) is used for the inner arm conductor and head shell conductor.
The head shell uses a magnesium alloy head shell.
The turntable is driven by a quartz PLL system that controls the number of revolutions of the motor according to the reference signal of the crystal oscillator.
A high-torque DC servo motor with a precisely finished bearing mechanism is used as the drive motor.
The cabinet structure is a combination of die-casting, wooden frame, and resinamic.
In consideration of the effect of the turntable sheet on playback sound, we have adopted a turntable sheet that has been examined from both the shape and material. This sheet is slightly mortar-shaped in consideration of the thickness and warpage of the record to enhance adhesion with the record. In addition, in consideration of the material, hardness and specific gravity, etc., we have adopted a filled SBR sheet.
|Type||Full auto player|
|Drive system||Direct drive system|
|Motor||4-Phase 12-Pole Quartz PLL / DC Servo Motor|
|Turntable||Outer diameter 333 mm Aluminum Alloy Die-cast, 1.8 kg|
|Inertial mass||350 kg / cm2|
|Number of revolutions||33 1/3, 45 rpm|
|Rotational speed switching system||Electronic Type (Manual Switching at Irregular Rotational Speed)|
|Wow and flutter||0.011%(WRMS)
0.025% (WRMS, JIS, Rotating Part Only)
|Signal-to-noise ratio||80 dB or more (DIN-B)|
|Tone Arm Section|
|Format||Static Balance, Universal S-Shaped Pipe Type|
|Offset Angle||22 °|
|Tracking error angle||+ 2.9 °, -1.5 °|
|Needle pressure adjustment||0 ~ 3g Direct Reading Type (0.1g Step)|
|Head shell||Magnesium alloy, 6.2g|
|Cartridge mounting weight range||11g ~ 16.5g
16g ~ 21.5g (When Using Sub Weight)
|Pwer||100 VAC, 50Hz/60Hz|
|External dimensions||Width 474x Height 150x Depth 395 mm|
45 Rotation Adapter