Bang and Olufsen Beogram 4004 5525

The Beogram 4004 Type 5525 is a tangential tracking turntable produced by Bang & Olufsen between 1978 and July 1980. It is designed for precise vinyl playback with advanced electronic control and seamless integration into B&O audio systems.

• Speeds: 33 and 45 rpm, electronically switched

• Speed Deviation: Less than 0.02%

• Speed Control Range: Greater than ±3%

• Tonearm: Tangential (linear tracking) with tracking error less than 0.04°

• Lift System: Electronic

• Antiskating: Parallel tracking with error angle compensation

• Motor: Servo-controlled DC motor

• Drive System: Belt drive

• Turntable Platter: 30 cm diameter, weighing approximately 1.3 kg

• Pickup Cartridge: MMC 20 EN (Moving Micro Cross technology)

• Stylus: Elliptical naked diamond

• Recommended Stylus Pressure: 12 mN (1.2 g), range 0–1.5 g

• Wow and Flutter: Less than ±0.05%, WRMS less than ±0.025%

• Rumble: Weighted > 65 dB, unweighted > 45 dB

• Power Supply: Multi-voltage compatible (110–130 V and 220–240 V)

• Power Consumption: Approximately 20 W

• Dimensions (W x H x D): 49 x 10 x 38 cm

• Weight: Approximately 11 kg

Notable Features

• Fully automatic operation including record size detection, automatic speed selection, and pickup movement.

• Designed for use with Beomaster 2400.2 and other B&O systems, featuring a 7-pin DIN connector for remote start/stop control.

• Electronic lift system for smooth and precise tonearm positioning.

• The tangential tonearm minimizes tracking error and record wear by moving the stylus in a straight line across the record.

• The turntable can detect if a record is on the platter and will only start playback if a disc is present.

• High-quality construction with a focus on reducing vibration and resonance.