Pickup Cartridge 600

The Goldring 600 pickup, introduced in 1957, marked a significant advancement in cartridge design as Great Britain’s first model specifically engineered for diamond styli. Its technical innovations prioritized high-fidelity reproduction, leveraging the diamond’s durability and performance advantages. Below is a detailed breakdown of its specifications and features:

Technical Specifications

• Type: Variable reluctance turnover cartridge with replaceable styli (diamond for LP, sapphire for 78 RPM).
• Dynamic impedance: 2 mgm referred to the stylus tip.
• Frequency response: Extended range with linearity beyond 20 kHz, enabled by a high-frequency resonance at ~25 kHz.
• Compliance: ≥5 × 10⁶ cm/dyne.
• Sensitivity: 3.2 mV per cm/sec recorded velocity.
• Effective mass at stylus tip: Half that of the earlier Goldring 500 model.

Design Features

• Mu-metal shield: Integrated to reduce electromagnetic interference.
• Stylus system: Diamond stylus optimized for longevity (eliminating frequent replacements) and improved tracking, paired with a sapphire option for 78 RPM records.
• Mechanical refinements: Reduced moving mass and increased compliance enhanced transient response and minimized record wear.

Performance Characteristics

• Audible improvements: Notable “presence” and clarity, attributed to the lowered distortion and extended high-frequency response.
• Durability: Diamond stylus lifespan significantly outperformed traditional materials, aligning with long-play (LP) record demands.

The Goldring 600’s design exemplified a shift toward precision engineering in audio reproduction, balancing technical rigor with practical longevity. Its specifications and performance cemented its reputation as a landmark product in mid-20th-century audio technology.

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Elenco delle radio e altri apparecchi della Goldring, British Goldring Products Ltd.; London