Bang & Olufsen BeoLufsen S80/2 (1982)

The Bang & Olufsen BeoLufsen S80/2 is a high-fidelity floor-standing loudspeaker introduced in 1982 as part of B&O's acclaimed Linear Phase series. Designed with a focus on time coherence and acoustic precision, the S80/2 exemplifies the Danish brand’s commitment to engineering excellence and minimalist aesthetic design. These passive speakers remain sought after by vintage audio enthusiasts for their neutral sound signature, detailed imaging, and elegant construction.

Specifications

Parameter	Specification
Model	S80/2
Year of Production	1982–1986
Type	Passive floor-standing speaker
Impedance	4 ohms
Sensitivity	86 dB (2.83V/1m)
Frequency Response	Not officially documented
Crossover	Phase-corrected, 2nd order
Tweeter	1" dome with Acoustic Lens technology
Mid/Bass Drivers	Dual 6.5" bass drivers
Cabinet Material	Beveled MDF with magnetic grille
Dimensions (H×W×D)	96 cm × 22 cm × 32 cm (37.8" × 8.7" × 12.6")
Weight	Approx. 22 kg (48.5 lbs) per speaker
Placement	Best in free space, away from walls

Key Features

Acoustic Lens Tweeter: A signature B&O innovation, the Acoustic Lens improves high-frequency dispersion for a wider and more consistent soundstage.
Dual Bass Drivers: Two 6.5" woofers work in parallel to deliver controlled, articulate bass response with reduced distortion.
Phase-Corrected Crossover: Engineered for time alignment between drivers, ensuring coherent wavefronts and precise stereo imaging.
Beveled Cabinet: The sculpted MDF enclosure minimizes internal standing waves and diffraction, contributing to sonic clarity.
Magnetic Grille: Tool-free, acoustically transparent grille attachment maintains clean aesthetics without compromising sound.

Historical Context

The S80/2 was a flagship model in Bang & Olufsen’s Linear Phase series, a line developed in the early 1980s to achieve time-coherent sound reproduction. This meant aligning the acoustic centers of the drivers so that sound waves arrive at the listener’s ear simultaneously—a hallmark of high-end speaker design. The series was a technical statement from B&O, showcasing their mastery of crossover networks and driver integration.

During this era, Bang & Olufsen distinguished itself not only through sonic performance but also through industrial design. The S80/2’s minimalist, angular cabinet and absence of visible fasteners reflected the brand’s Scandinavian design philosophy. It was often paired with other B&O electronics like the BeoCenter or BeoCombi systems, creating a fully integrated high-end audio experience.

Sound Signature

The S80/2 delivers a neutral and detailed sound with exceptional clarity and spatial accuracy. Its phase-aligned crossover and Acoustic Lens tweeter produce a wide, stable soundstage with pinpoint imaging—ideal for critical listening. Bass is tight and well-controlled, though not overly emphasized, staying true to B&O’s philosophy of sonic honesty. The overall presentation is refined, with a smooth high end and balanced midrange, characteristic of high-end Danish audio design.

Maintenance and Restoration Tips

Due to their age, vintage S80/2 speakers may require maintenance to restore optimal performance:

Foam Surround Replacement: The original foam on the bass drivers commonly degrades after 30+ years. Re-coning or replacing with modern rubber surrounds is recommended.
Crossover Capacitors: Aging capacitors in the crossover network can affect tonal balance and efficiency. Consider recapping with modern, high-quality components.
Grille Fabric: The magnetic grilles may have worn or discolored fabric. Replacement covers are available from specialty audio restoration suppliers.
Cabinet Care: Clean the beveled MDF cabinet with a dry or slightly damp cloth. Avoid harsh chemicals to preserve the finish.
Amplifier Matching: With 4-ohm impedance and 86 dB sensitivity, the S80/2 benefits from a current-capable amplifier with good damping factor to control the bass drivers effectively.

Collectibility and Market Value

The BeoLufsen S80/2 holds a collectibility rating of 7/10, prized for its design heritage and technical innovation. Well-maintained pairs in original condition typically sell for $200–$400 per pair, with prices varying by region and restoration quality. Fully restored units with upgraded drivers or crossovers may command higher values among audiophiles.

While not as rare as some limited B&O models, the S80/2 remains a respected representative of 1980s high-end speaker engineering and a testament to Bang & Olufsen’s enduring legacy in audio design.