Sony PS 1350

A belt-drive turntable system with precision engineering and low-vibration motor design

Overview

The Sony PS-1350 is a stereo turntable system. The platter is a 30 cm aluminum die-cast piece, driven by a 4-pole synchronous motor through a belt. It plays 33 1/3 and 45 rpm. The tone arm is a static balance S-shaped type, and the cartridge is an MM type with a 0.5 mil diamond needle. Sony also fitted a high-precision urethane belt, a rubber sheet to suppress record vibrations, and a removable acrylic dust cover. The whole design aims at low vibration and precise tracking.

Specifications

Turntable	30 cm Aluminum Die Cast
Motor	4-pole synchronous motor
Drive system	Belt drive
Number of revolutions	33 1/3, 45 rpm
Start-up characteristic	Within 1/2 Rotation (33 1/3rpm)
Wow flutter	0.06%WRMS
Signal-to-noise ratio	63dB(DIN-B)
Tone arm	Static balance S-shaped tone arm
Effective length	216.5mm
Total Length	300mm
Overhang	16.5mm
Tracking error	+ 3 ゜', -1 ゜
Needle pressure adjustment range	0 ~ 3g
Shell Weight	7.5g(SH-135)
Usable cartridge weight	4g ~ 12.5g (when using the attached shell)
Cartridge	MM Type
Frequency characteristic	10 Hz to 25 kHz
Separation	25 dB or More (1 kHz)
Output voltage	3 mv (1 khz, 5cm/s)
Optimum load impedance	47k Ω ~ 100k Ω
Compliance	8x10 -6 cm/dyne
Needle pressure (optimum needle pressure)	1.5g ~ 2.5g (2.0g)
Needle	0.5 mil diamond needle
Dead weight	5.9g
Exchange needle	ND-135G
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	8W
External dimensions	Width 450x Height 160x Depth 380 mm
Weight	7.7kg

Design

The 4-pole synchronous motor was developed exclusively for low vibration. The urethane belt is high-precision, with both sides polished. The rubber sheet suppresses harmful record vibrations and keeps the record fitting securely. The static balanced universal tone arm has a precision pivot bearing for increased sensitivity, plus a damper-supported section for vibration resistance. There is a built-in strobe/scaler for checking speed, a low-capacity output cord to reduce high-frequency loss, and a height-adjustable insulator. The acrylic dust cover is removable.

Product Family

The service manual for the PS-1350 also covers the PS-2350 model.

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