Turntable Details
Drive
Direct
Motor
Wow & Flutter %
Rumble [dB]
Speed
Dimensions [mm]
Platter Material
Platter Diameter [mm]
Total Weight [kg]
Tonearm
Year Built
Platter Weight [kg]
Plinth Material
Price
Additional information
The RCA Type 73B is a professional transcription turntable designed for high-quality recording and playback. Here's a technical overview based on available information:
Key Features:
Turntable Size: The turntable is 17½ inches in diameter, capable of accommodating blanks up to 18¼ inches in diameter and ¾-inch thick.
Drive System: The RCA 73B typically uses a robust drive system, though specific details about the motor configuration (e.g., single or dual motors) are not widely documented.
Recording Capabilities: It is designed for both normal and fine groove recording, making it versatile for various applications.
Accessories and Components: Often used with a Gray 106-SP tonearm, and may require additional components like a cutter head and microscope for full functionality.
Technical Challenges and Restoration:
Restoration: Restoring an RCA 73B can be challenging due to its rarity and limited documentation. Users often rely on scattered resources like old manuals and online forums for guidance.
Components: The machine may come without essential parts like the turntable, microscope, or cutter head, requiring owners to source these separately.
Resources for Technical Information:
Manuals and Guides: Technical manuals and guides can be found through specialized forums and historical archives, such as American Radio History.
Community Support: Online forums like The Secret Society of Lathe Trolls provide valuable insights and support from experienced users.
Pricing and Availability:
Pricing: Listings for the RCA 73B can vary significantly, with prices around $5,300 for non-functioning units.
Availability: Due to its vintage nature, the RCA 73B is not commonly available, and purchases often require local pickup or freight due to its weight