Akai AP-B21C

The Akai AP-B21C is a semi-automatic, 2-speed belt-drive turntable produced in Japan around 1981–1982. It is a refined version of the AP-B21, featuring a factory-fitted cartridge and solid construction aimed at providing reliable and musical playback.

Technical Overview

Drive and Motor:

• Belt drive system with auto-return function.

• Motor: 4-pole synchronous motor designed for smooth, quiet rotation.

• Speeds supported: 33⅓ and 45 rpm.

• Wow and flutter: 0.05%, ensuring stable speed with minimal pitch variation.

• Rumble: 65 dB, indicating low background noise.

Platter:

• Heavy die-cast aluminum alloy platter (approximately 300 mm diameter) for low resonance and smooth rotation.

Tonearm:

• J-shaped static balanced tonearm with inside force canceller (anti-skating).

• Effective length: 220 mm.

• Overhang: 15 mm.

• Shell weight: approximately 7 g.

• Oil-damped arm lifter for smooth stylus placement.

• Cartridge weight range: 4 to 9 grams.

• Removable headshell allowing cartridge upgrades.

Cartridge:

• Factory-fitted with a VM (moving magnet) dual magnet cartridge, often Akai PC-85 or similar.

• Compatible with popular cartridges like Audio-Technica AT95E.

• Stylus type typically bonded elliptical diamond.

Construction and Dimensions:

• Dimensions: 440 mm (W) x 135 mm (H) x 355 mm (D).

• Weight: approximately 5.9 kg.

• Solid chassis with large damped insulator feet to reduce acoustic feedback.

• Finished typically in silver.

• Includes a dust cover.

Additional Features:

• Pitch control ±5% for fine speed adjustment.

• Known for clear, bright sound with good mids and bass.

• Suitable for casual listening and entry-level audiophile use.

• Replacement parts such as belts, stylus, and headshells are readily available.

• Praised for robust build and musical sound quality in vintage turntable communities.