Bang & Olufsen Beolab 500 (1987)

Name: Bang & Olufsen Beolab 500
Brand: Bang & Olufsen

The Bang & Olufsen Beolab 500 stands as a landmark in the evolution of high-fidelity audio systems, representing the Danish company’s unwavering commitment to acoustic excellence, innovative engineering, and timeless design. Introduced in 1987, the Beolab 500 was part of Bang & Olufsen’s premium Beolab series, which focused on active loudspeaker technology—integrating amplification directly into the speaker enclosure for optimized performance. This approach distinguished the Beolab 500 from conventional passive speakers and positioned it as a forward-thinking solution in the high-end audio market of the late 1980s.

Design Philosophy and Aesthetic

True to Bang & Olufsen’s Scandinavian heritage, the Beolab 500 features a minimalist, sculptural design that emphasizes form following function. The speaker’s cabinet is crafted from high-density fiberboard (HDF) with a smooth, matte finish, available in classic B&O color options such as black, white, and anthracite. The front baffle is slightly curved, reducing diffraction and enhancing sound dispersion, while the overall shape contributes to both acoustic integrity and visual elegance.

One of the most distinctive visual elements is the use of aluminum grilles, which not only protect the drivers but also serve as a design signature. These grilles are magnetically attached, allowing for easy removal without compromising the clean lines of the speaker. The rear panel houses all connectivity options in a recessed compartment, maintaining the sleek profile and protecting cables from damage.

Acoustic Engineering and Driver Configuration

The Beolab 500 is a three-way active speaker system, meaning it uses separate amplifiers for each driver and includes an internal crossover network. This design allows for precise control over frequency response and phase alignment, resulting in a more accurate and dynamic sound reproduction.

The speaker features three dedicated drivers:

A 25 mm (1 inch) soft-dome tweeter for high frequencies, engineered to deliver clear, detailed treble without harshness.
A 100 mm (4 inch) midrange driver with a specially treated paper cone, optimized for vocal clarity and instrumental precision.
A 200 mm (8 inch) bass driver with a long-throw design, capable of producing deep, controlled low frequencies.

Each driver is powered by its own dedicated amplifier module housed within the speaker cabinet. The total system output is 150 watts RMS per speaker, distributed as 50W to the tweeter, 50W to the midrange, and 50W to the bass driver. This bi-amped configuration ensures that each frequency band receives clean, distortion-free power, minimizing intermodulation and maximizing dynamic range.

Active Electronics and Crossover

The internal active crossover in the Beolab 500 operates at line level before amplification, allowing for steeper filter slopes and better driver integration than passive crossovers. This results in a seamless transition between frequency bands and a more coherent soundstage. The crossover points are set at 350 Hz (between bass and midrange) and 3.5 kHz (between midrange and tweeter), carefully chosen to match the drivers’ optimal performance ranges.

Additionally, the Beolab 500 includes advanced thermal and over-excitation protection circuits. These safeguards monitor driver excursion and temperature in real time, automatically adjusting signal levels to prevent damage during high-volume playback—a critical feature for preserving longevity in a high-performance system.

Connectivity and Integration

As an active speaker system, the Beolab 500 requires an external line-level audio source. It features balanced XLR and unbalanced RCA inputs on the rear panel, allowing compatibility with a wide range of preamplifiers, integrated amplifiers, or digital audio processors. The inclusion of balanced inputs was particularly advanced for its time, reducing noise and interference over long cable runs—ideal for both home and professional environments.

The speakers are designed to be used in pairs, with no master/slave designation; each unit operates independently. This symmetry ensures consistent performance across the stereo field. For optimal placement, B&O recommended positioning the speakers at least 2 meters apart and angled slightly toward the listening position, taking advantage of the wide dispersion characteristics.

Performance and Sound Signature

The Beolab 500 delivers a balanced, transparent sound profile that emphasizes accuracy over coloration. The bass is tight and articulate, avoiding the boominess often associated with large enclosures. The midrange is exceptionally clear, making the speakers ideal for vocal-centric music genres like jazz, classical, and acoustic recordings. The tweeter provides extended highs with excellent detail, though it remains smooth and non-fatiguing even during extended listening sessions.

With a frequency response of 45 Hz to 20 kHz (±3 dB), the Beolab 500 covers the vast majority of the audible spectrum. While not designed for extreme sub-bass reproduction, the speakers can be paired with a dedicated subwoofer—such as B&O’s own Beolab 1 or Beolab 2—for full-range performance in larger rooms.

Legacy and Collectibility

Though production of the Beolab 500 ended in the early 1990s, the model remains highly sought after by audiophiles and design collectors. Its combination of advanced engineering, premium materials, and iconic aesthetics makes it a centerpiece in any vintage audio setup. Original units in good condition often command high prices in the secondhand market, particularly those with matching finishes and intact grilles.

The Beolab 500 also paved the way for future B&O innovations, including the Beolab 8000 and later the Beolab 5, which further refined active speaker technology with digital signal processing and wireless capabilities. However, the Beolab 500 holds a special place as one of the first fully integrated active systems from the brand to gain international acclaim.

Conclusion

The Bang & Olufsen Beolab 500 is more than just a speaker—it is a synthesis of art, science, and craftsmanship. Its enduring appeal lies not only in its sonic performance but also in its embodiment of a design philosophy that values simplicity, precision, and longevity. For collectors and audiophiles alike, the Beolab 500 represents a golden era of Danish audio innovation, where every component was engineered to elevate both the listening experience and the living space it inhabits. Even decades after its release, the Beolab 500 remains a benchmark in the world of vintage high-fidelity audio.