Turntable Details
Drive
Belt
Motor
DC
Wow & Flutter %
0.025
Rumble [dB]
-65
Speed
33, 45
Dimensions [mm]
Platter Material
Platter Diameter [mm]
300.0
Total Weight [kg]
Tonearm
Year Built
12.00
Linear
Platter Weight [kg]
2.20
Plinth Material
Price
Additional information
The Beogram 4002 Type 5501, introduced around 1975, is a sophisticated tangential (linear tracking) turntable from Bang & Olufsen, designed to deliver precise, high-fidelity vinyl playback with advanced automation and minimal tracking error.
Tracking System: Tangential (linear tracking) tonearm that moves the stylus in a straight line from the record edge to the center, virtually eliminating tracking angle error and skating force.
Cartridge: MMC 4000 (later known as MMC 20EN) with an elliptical naked diamond stylus (radius of curvature 5 x 17 µm).
Output Voltage: 2 x 1 mV
Speeds: 33 and 45 rpm, electronically controlled with automatic speed selection.
Wow and Flutter: Less than ±0.025% (W.R.M.S. weighted).
Rumble: Better than 65 dB (DIN weighted), greater than 45 dB unweighted.
Signal-to-Noise Ratio: Approximately 65 dB.
Stylus Pressure Range: 0 to 1.5 g, with a recommended pressure of about 1 g.
Motor: Servo-controlled DC synchronous motor.
Drive System: Belt drive for smooth and stable platter rotation.
Turntable Platter: 30 cm diameter, weighing approximately 2.2 kg.
Automatic Features: Record size detection, automatic pickup movement, automatic speed selection, and electronic lift system.
Speed Deviation: Less than 0.02%.
Speed Control Range: Greater than 6%.
Antiskating: Effectively eliminated by the tangential tracking system.
Power Supply: Multi-voltage compatible (AC 110V/130V/220V/240V, 50/60 Hz).
Power Consumption: Approximately 20 to 40 W.
Dimensions (W x H x D): 49 x 10 x 38 cm.
Weight: Approximately 11 to 12 kg.
Additional Features: Hinged dust cover that can open up to about 60 degrees or be fully removed.
Notable Characteristics
The tangential tonearm ensures minimal distortion by following the groove precisely, reducing record wear and improving sound fidelity.
Automation is governed by computer-like logic circuits, allowing simple operation—just press START.
The system uses a unique detector arm parallel to the pickup arm to sense record size and speed, ensuring safe and accurate stylus placement.
The synchronous motor is controlled by a stabilized oscillator, making platter rotation independent of mains voltage and frequency fluctuations.
The elliptical naked diamond stylus in the MMC 4000 cartridge offers a wide frequency response (20–25,000 Hz ±1.5 dB).