Bang & Olufsen Beolab 1900/2 (1984)

Name: Bang & Olufsen Beolab 1900/2
Brand: Bang & Olufsen

The Bang & Olufsen Beolab 1900/2 is a landmark loudspeaker system from the Danish luxury audio manufacturer, representing the pinnacle of high-end audio engineering and industrial design in the mid-1980s. Introduced in 1984, the Beolab 1900/2 was part of B&O’s ambitious Beolab series, which aimed to deliver studio-grade sound reproduction in domestic environments. This active speaker system combined cutting-edge electronics with a sculptural aluminum and wood enclosure, embodying the company’s philosophy of merging aesthetics, functionality, and acoustic excellence.

Design and Build Quality

The Beolab 1900/2 is instantly recognizable by its distinctive wedge-shaped cabinet, crafted from high-quality materials that reflect Bang & Olufsen’s commitment to craftsmanship. The enclosure features a combination of solid teak wood side panels and a brushed aluminum front baffle, giving the speaker both warmth and a futuristic, minimalist appearance. The design was not only visually striking but also acoustically functional—its angled front panel was engineered to optimize time alignment between the drivers, ensuring a coherent soundstage.

Standing at approximately 85 cm (33.5 inches) tall, the Beolab 1900/2 is a floor-standing speaker designed for free-space placement. Its weight—around 25 kg (55 lbs) per unit—attests to the dense, resonance-free construction. The internal bracing and non-parallel cabinet walls were designed to minimize standing waves and cabinet coloration, a hallmark of B&O’s acoustic philosophy during this period.

Acoustic Design and Driver Configuration

The Beolab 1900/2 is a three-way active loudspeaker system, meaning it features separate amplification for each driver and an integrated crossover network. This design allows for precise control over the audio signal, resulting in lower distortion and higher dynamic range compared to passive speakers of the era.

The speaker is equipped with the following drivers:

Tweeter: A 22 mm (0.87 in) soft-dome tweeter positioned at the top of the baffle, responsible for frequencies above 6 kHz. The tweeter is recessed into a waveguide to improve dispersion and reduce diffraction.
Midrange: A 77 mm (3 in) aluminum cone midrange driver handling frequencies between 600 Hz and 6 kHz. The use of aluminum provided stiffness and low mass, contributing to fast transient response and clarity.
Woofer: A 230 mm (9 in) long-throw aluminum cone bass driver for frequencies below 600 Hz. The large diameter and rigid cone material allowed for deep, controlled bass response without the need for a separate subwoofer in most listening environments.

Each driver is powered by its own dedicated amplifier section within the speaker’s internal electronics. The total system output is rated at 150 watts RMS—50 watts for the tweeter, 50 watts for the midrange, and 50 watts for the woofer—enabling high headroom and dynamic expression.

Active Electronics and Connectivity

One of the most innovative aspects of the Beolab 1900/2 was its fully active design. Unlike conventional passive speakers that rely on external amplifiers and passive crossovers, the Beolab 1900/2 contained built-in amplifiers and an active crossover network. This allowed for tighter integration between components and more precise tuning of the speaker’s performance.

The crossover points were set at 600 Hz and 6 kHz, with steep 24 dB/octave slopes to ensure clean separation between drivers. The electronics were designed and tuned in-house by B&O’s acoustical engineers, with an emphasis on time coherence and phase accuracy. This resulted in a remarkably transparent and spatially accurate soundstage, with excellent imaging and depth.

Input connectivity was provided via balanced XLR and unbalanced RCA inputs, allowing the Beolab 1900/2 to integrate with a wide range of preamplifiers and source components. A unique feature was the inclusion of a remote-controlled volume attenuator, which allowed users to adjust speaker-level volume from a distance—a rare feature at the time.

Sound Characteristics

The sonic signature of the Beolab 1900/2 is often described as neutral, detailed, and dynamically expressive. The active design contributes to a low noise floor, allowing subtle musical details to emerge even at low listening levels. The time-aligned drivers and precise crossover design result in a cohesive sound image, with instruments and voices rendered with lifelike positioning and scale.

Bass response is tight and articulate, extending down to around 35 Hz, making the speaker suitable for a wide range of musical genres without requiring additional low-frequency support. The midrange is transparent and natural, ideal for vocal and acoustic recordings. The tweeter delivers smooth, extended highs without harshness, even at high volumes.

Due to its active nature, the Beolab 1900/2 does not require external amplification, but it does require a preamplifier or line-level source. This made it a self-contained solution for audiophiles seeking high fidelity without the complexity of matching separate components.

Historical Context and Legacy

The Beolab 1900/2 was introduced during a period of rapid innovation at Bang & Olufsen. The early 1980s saw the company pushing the boundaries of both industrial design and audio technology, with products like the Beosystem 2000 and Beovision Delta television systems. The Beolab 1900/2 was positioned as a premium product for discerning listeners who valued both sonic performance and aesthetic integration in their living spaces.

While the speaker was expensive at launch—priced well above most high-end passive systems of the time—it found a loyal following among audiophiles and design enthusiasts. Its build quality and engineering have ensured that many units remain in use today, over four decades later.

The Beolab 1900/2 also paved the way for future active speaker designs from B&O, including the Beolab 5 and Beolab 8000 series. Its influence can be seen in the company’s continued commitment to active loudspeaker technology and integrated audio systems.

Collectibility and Modern Relevance

Today, the Beolab 1900/2 is considered a classic of 1980s high-end audio. Well-maintained examples are sought after by collectors and vintage audio enthusiasts. Due to their active electronics, servicing can be challenging—original parts and technical expertise are required to maintain optimal performance. However, the robust build and modular design mean that many units can still be restored to full working order.

In the modern context, the Beolab 1900/2 stands as a testament to Bang & Olufsen’s design ethos: that technology should serve both function and beauty. While newer digital speakers offer advanced features like room correction and wireless connectivity, the Beolab 1900/2 remains admired for its analog purity, craftsmanship, and timeless design.

For those who appreciate the fusion of art and engineering, the Beolab 1900/2 is more than just a speaker—it is a piece of audio history.