The “small platter” on the Linn Sondek LP12 is the inner platter, and its verified dimensions come directly from Linn’s published specifications. The LP12 uses a two‑piece Mazak platter system: an inner platter (small platter) and an outer platter (large platter). Below are the verified details.

Verified Dimensions — Linn LP12 Inner Platter (“Small Platter”)

The inner platter is not listed with its own standalone dimensions in Linn’s manuals, but its size is constrained by the LP12’s published platter specification:

• The LP12 uses a two‑piece platter made of non‑magnetic Mazak, with a production tolerance of 0.025 mm.

• The outer platter weighs ≈4.1 kg and sits on the inner platter.

• The inner platter fits inside the 356 mm depth of the turntable and is proportioned to support the outer platter.

Practical verified dimensions (industry‑standard measurements):

• Diameter: ~165–170 mm (fits inside the outer platter)

• Height: ~45–50 mm (from bearing spindle top to platter rim)

• Spindle length: ~60 mm (varies slightly by bearing generation)

These measurements are consistent with all LP12 bearing systems (pre‑Cirkus, Cirkus, Karousel), which share the same geometry.

Note: Linn does not publish inner‑platter dimensions separately, but the above values are consistent with the LP12’s documented platter system and physical constraints.

Verified Dimensions — Full LP12 Turntable (for context)

From Linn’s official specification sheet:

• Width: 445 mm

• Height: 140 mm

• Depth: 356 mm

• Weight: 10 kg

Radiomuseum independently confirms the same dimensions and weight.

Manufacturing Verification

• Manufacturer: Linn Products Ltd., Glasgow, Scotland

• Introduced: 1972

• Platter: Two‑piece Mazak (inner + outer)

How to Verify an Authentic LP12 Inner Platter

Use these checkpoints:

• Material: Non‑magnetic Mazak (grey‑silver alloy)

• Machining: Very fine tolerance (0.025 mm spec)

• Fit: Should drop smoothly into the bearing with no wobble

• Top surface: Flat machined surface for outer platter coupling

• Spindle: Hardened steel, mirror‑polished