ACOS Rega Planet

The ACOS Rega Planet turntable, introduced in the early 1970s, is a significant model in the evolution of turntable design, known for its innovative engineering and aesthetic appeal. It represents one of the early products from Rega, which has since become a renowned name in high-fidelity audio equipment.

Key Specifications

• Drive System:Type: Belt-drive
  Motor: 24-pole AC synchronous motor
  Speed Options: Supports playback at 33 1/3 RPM and 45 RPM
  

• Platter:Material: Diecast alloy platter, designed for aesthetic appeal and functionality
  Diameter: Approximately 300 mm
  Design Consideration: The platter's design was noted for its visual impact but criticized for not adequately supporting records, leading to speed stability issues.
  

• Tonearm:Type: S-shaped aluminum tube tonearm
  Effective Length: 237 mm
  Overhang: 15 mm
  Construction: The tonearm was derived from Acos and manufactured in Japan, designed to provide good tracking and sound quality.
  

Build Quality

The plinth of the Rega Planet is constructed from medium-density fiberboard (MDF) and features an unsprung design that minimizes vibrations. It is supported by three rubber feet to enhance isolation from external disturbances. This design marked a departure from traditional suspended or spring-loaded turntables prevalent at the time.

Performance Characteristics

The ACOS Rega Planet is recognized for its warm and smooth sound profile, providing a spacious listening experience. While it offers decent performance for its era, it is noted that the turntable requires careful placement to mitigate vibration issues, particularly when used near loudspeakers.

Modifications and Upgrades

Many owners have opted to upgrade components such as the tonearm or bearing oil to improve performance. The turntable can also accommodate various cartridges, allowing users to customize their setup based on personal preferences.

Conclusion

The ACOS Rega Planet turntable is an important model in the history of vinyl playback technology. Its unique design and engineering principles laid the groundwork for future Rega models, making it a noteworthy choice for collectors and enthusiasts interested in vintage audio equipment. Despite some limitations in its original design, it remains a respected piece of audio history that reflects the innovative spirit of its time.