Sony PS-X 7

Data

General

• Manufacturer: Sony
• Model: PS-X 7
• Type: Record player
• Years of manufacture: 1977 - 1978
• Made in: Japan
• Color: Silver / Grey
• Original price approx.: 350 US-$, 1'100 DM, 1978

Technical data

Remarks

• Other models in the same series:
• Sony PS-11
• Sony PS-22
• Sony PS-8750
• Sony PS-T 1
• Sony PS-T 2
• Sony PS-T 3
• Sony PS-X 2
• Sony PS-X 3
• Sony PS-X 4
• Sony PS-X 5
• Sony PS-X 6
• Sony PS-X 7
• Sony PS-X 9

Pictures

• Image: Sony PS-X 7

Reviews

• Anno 1978, the PS-X 7 was the largest fully automatic turntable at Sony, next to the large Sony PS-X 9, which was also offered as a studio turntable.
• The chassis was made of the low-resonance SMBC material in (plain) grey. This is an extremely hard mixture of PVC, aluminum, and yet another material that Sony is silent about. It is harder than some metals, I - "Phonogen" - found out when installing a new (thicker) cable.

Quartz-controlled direct drive (brooms up to 150 g are compensated without problems)

• Synchronization fluctuations: 0,045%
• Rumble noise voltage ratio: 79 dB
• Extremely low-mass carbon tone arm with standard (SME) headshell
• 3 plate sizes adjustable
• Gel pad to increase the inertia of the platter
• Sensor buttons (Start/Stop and Repeat) for vibration-free operation with closed hood
• Optoelectronic limit switch
• Stroboscope with own frequency (120 Hz !) for even more precise speed control
• Similar Sony turntables:
  • Sony PS-X 4 identical but only semi-automatic.
  • Sony PS-X 6 identical but without carbon tone arm
• "Phonogen": I had few problems even with the digital recording of the legendary Tchaikovsky 1812. Even top-class turntables had to give in, some vinyl and audio freaks claimed that the right-angled deflections of the record were not playable, but the Sony disproved this ;-)).

Report in "Fono Forum" 11 / 1978

Links

• External link to website "The Vintage Knob": [[1]]