SONY PS-2400
¥ 39,800 (around 1971)
Commentary
A record player system that employs a DC servo motor belt drive system.
The turntable part is equipped with a turntable equivalent to TTS-2400.
The motor is a low-speed DC servo motor with less vibration and noise due to the low speed. The rotation is controlled by the servo to prevent uneven rotation. A polyurethane belt is used to drive the turntable. In addition, a dedicated IC is used for the servo circuit to greatly improve reliability.
31 cm aluminum die-cast is adopted for the turntable, and oilless metal is used for the bearing so that no lubrication is required.
Strobe with large neon tubes is adopted.
The newly developed universal type arm is mounted on the arm part.
It is equipped with functions such as inside force canceler, lateral balancer, arm lifter, 0 balance fine adjustment and arm height adjustment device.
The cartridge is an IM type.
Since an international standard shell is used, the cartridge can be replaced.
The cabinet has a walnut finish and a special shock absorber is built in to absorb external vibrations.
The acrylic dust cover is detachable and has a free-stop design.
Model Rating
| Type | Record player system |
| <Turntable portion> | |
| Turntable | 31 cm aluminum die cast, 1.5 kg |
| Motor | DC servo motor |
| Drive system | Belt drive |
| Number of revolutions | 33 1/3, 45 rpm |
| Speed adjustment range | + / - 4 per cent |
| Start-up characteristic | Within 1/2 Rotation (33 1/3rpm) |
| Wow flutter | Within 0.06% WRMS |
| Signal-to-noise ratio | 55 dB or more |
| Tone Arm Section | |
| Tone arm | Static balanced universal tone arm |
| Effective length | 245mm |
| Total Length | 336mm |
| Overhang | 14mm |
| Tracking error angle | + 2 ゜ 16', -1 ゜ 12' |
| Offset Angle | 20 ° 40' |
| Needle pressure adjustment range | 0 ~ 3g (0.1g scale) |
| Inside force cancel range | 0 to 300 mg |
| Arm Height Adjustment Range | 5mm |
| Shell Weight | 10.5g |
| Usable cartridge weight | 4g ~ 13g (CW-50 is used for 13g or more) |
| Cartridge Section | |
| Cartridge | IM Type |
| Frequency characteristic | 15 Hz to 22 kHz |
| Separation | 25dB(1kHz) 23dB(10kHz) |
| Output voltage | 5mV |
| Load impedance | 50k Ω |
| Compliance | 10x10-6cm/dyne |
| Vertical tracking angle | 15 ° |
| Needle pressure (optimum needle pressure) | 1.5g ~ 3g (2g) |
| Needle | 0.5 mil diamond needle |
| Dead weight | 6.5g |
| Exchange needle | ND-126G(¥2,000) |
| <General> | |
| Semiconductor used | IC : 1 Transistor : 1 Diode : 3 pcs |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 3W |
| External dimensions | Width 490x Height 185x Depth 395 mm |
| Weight | 8.5kg |
| Attachment | 45 Rotation Adapter Overhang adjustment gauge |
| Sold Separately | Replacement Shell SH-120 (¥ 1,000) Auxiliary Weight CW-50 (¥ 600) |