SONY PSE-4000
¥ 85,000 (around 1970)
Commentary
A top-of-the-line armless player system less player system equipped with a cabinet. 4000
An AC servo motor is used for the drive part.
This motor is based on the principle of eddy current (overcurrent). In principle, discontinuous torque is not generated and smooth rotation is achieved. Vibration is also reduced due to the ultra-low speed.
A servo amplifier is mounted to achieve smoother rotation.
A specially developed IC is used in the servo circuit. A frequency generator (FG) directly connected to both the motor and the turntable provides constant feedback of the rotational status and controls the motor to maintain the specified rotational speed.
The turntable is 32 cm aluminum alloy cast and weighs 1.75 kg.
An accurate strobe is engraved on the outer circumference, and the correct number of revolutions can be checked by a large neon tube.
Since a servo motor is used, speed switching and speed adjustment are electronic.
An acoustically excellent material is used for the rubber sheet, and it is charged to prevent dust from sticking.
The arm board of the cabinet is an independent type for easy replacement of the arm, and the arm board was sold separately.
In addition, a new type shock absorber is built into the bottom to absorb external vibration.
The acrylic dust cover is removable and has a fleece top design.
Model Rating
| Type | Armless player system |
| <Turntable portion> | |
| Turntable | 32 cm aluminum alloy cast, 1.75 kg |
| Motor | AC servo motor |
| Drive system | Direct drive |
| Number of revolutions | 33 1/3, 45 rpm |
| Speed adjustment range | + / - 3% |
| Start-up characteristic | Within 1.2 Revolutions (33 1/3rpm) |
| Wow flutter | 0.03% WRMS or less |
| Signal-to-noise ratio | 60 dB or more |
| Tone Arm Section | |
| Arm board dimensions | Width 403x Depth 175x Thickness 18 mm |
| <General> | |
| Semiconductor used | IC : 1 Transistor : 7 pcs Diode : 11 units |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 17W |
| External dimensions | Width 560x Height 200x Depth 410 mm |
| Weight | 12kg 18 kg (listed in separate catalog) |
| Attachment | 45 Rotation Adapter Sony Oil OL-2K DRIVER |
| Sold Separately | Replacement Arm Board TAC-10 (¥ 1,200) Arm PUA-1500L (¥ 21,000) Cartridge VC-1500E (¥ 28,500) |