Bang & Olufsen Beolab 1702 (1986)
The Bang & Olufsen Beolab 1702 came out in 1986 as part of B&O's Beolab series. The series was built around active speakers with built-in amplification and signal processing. Unlike a conventional passive speaker, the Beolab 1702 was engineered from the ground up as a complete electro-acoustic system, with amplifiers, crossovers and drivers matched to each other.
Design and Aesthetic Philosophy
The Beolab 1702 was designed by David Lewis, who was responsible for many of B&O's products during the 1980s and 1990s. The form is minimalist and sculptural. The cabinet is extruded aluminum, which looks sleek and industrial and is both durable and acoustically inert. The cylindrical shape stands over a meter tall, and it helps minimize internal standing waves and diffraction effects.
The front baffle holds a vertical array of drivers behind a removable fabric grille. The base is weighted for stability. The Beolab 1702 was available in several finishes, including silver anodized aluminum and dark gray.
Technical Specifications and Engineering
The Beolab 1702 is a three-way active speaker. It has a separate built-in amplifier for each driver range - bass, midrange and treble - so no external amplification is needed. Total system power is rated at 250 watts RMS: 100 watts for the bass driver, 75 watts for the midrange and 75 watts for the tweeter.
The driver configuration includes:
- Bass: 20 cm (8-inch) long-throw aluminum cone woofer with a vented enclosure for extended low-frequency response.
- Midrange: 8 cm (3.2-inch) aluminum cone driver, time-aligned with the other drivers to ensure coherent wavefront delivery.
- Tweeter: 2.5 cm (1-inch) textile dome tweeter with a wide dispersion pattern for detailed high-frequency reproduction.
Each driver has its own amplifier module, housed in the speaker's base. The internal crossover is active and electronically controlled, and it works at line level before amplification. That reduces the distortion and intermodulation common in passive crossovers, and it ties the drivers together more tightly.
The speaker has balanced XLR and unbalanced RCA inputs, so it works with a wide range of preamplifiers and source components. A rear-panel control provides room gain compensation. It lets the user adjust bass output for placement, for example near walls or in corners.
Sound Performance
The Beolab 1702 has a transparent, balanced sound. The active design keeps distortion low and bass tight, with excellent dynamic range. Frequency response runs from 35 Hz to 22 kHz (±3 dB), which is enough for full-range music reproduction without a subwoofer in most rooms.
Listeners often describe the sound as "effortless" and "spacious," with a wide soundstage and precise imaging. The time-aligned drivers give a coherent presentation, with instruments and vocals rendered clearly. The aluminum drivers have a fast transient response.
Because it is active, the Beolab 1702 performs best with high-quality source material and a well-matched preamplifier. It is particularly good with classical, jazz and acoustic recordings, where nuance and spatial detail count. It also handles dynamic pop and rock with authority, thanks to its powerful bass section and clean midrange.
Legacy and Collectibility
The Beolab 1702 was marketed as a premium product, with a price tag to match. It was often sold alongside other high-end B&O components such as the Beogram turntables and Beovox amplifiers.
Today, the Beolab 1702 is highly sought after by vintage audio enthusiasts and design collectors alike. Its combination of cutting-edge 1980s technology, timeless aesthetics, and superb sound quality makes it a standout in the world of vintage loudspeakers. While some units may require servicing—particularly the internal amplifiers and power supplies—many remain in excellent working condition due to B&O’s rigorous build standards.
Replacement parts and technical documentation are available through specialized B&O service centers and enthusiast communities. The modular design also makes repairs relatively straightforward compared to more integrated systems.
Place in Bang & Olufsen’s History
The Beolab 1702 reflects Bang & Olufsen's philosophy of "total design," where form, function and technology are inseparable. It anticipated modern trends such as active DSP management and room correction, which are now common in high-end smart speakers and audiophile systems.
Later models like the Beolab 5 introduced digital signal processing and adaptive acoustics. The Beolab 1702 laid the foundation for B&O's position in the luxury speaker market.
Conclusion
The Bang & Olufsen Beolab 1702 is more than a vintage speaker—it is a milestone in audio engineering and industrial design. With its powerful active amplification, precision drivers, and iconic aluminum construction, it continues to impress audiophiles and design aficionados nearly four decades after its release. For those who value both sonic excellence and aesthetic refinement, the Beolab 1702 stands as one of the most compelling high-fidelity speakers of the 1980s.
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