Bang & Olufsen BeoLufsen S80/2 (1982)
The Bang & Olufsen BeoLufsen S80/2 is a floor-standing passive loudspeaker introduced in 1982 as part of B&O's Linear Phase series. It was designed around time coherence and acoustic precision. Collectors still look for it because of its neutral sound, detailed imaging and plain, elegant cabinet.
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 get time-coherent sound reproduction. That meant aligning the acoustic centers of the drivers so the sound waves reach the listener's ear at the same moment. The series showed off B&O's work on crossover networks and driver integration.
B&O stood out in this period for industrial design as well as sound. The S80/2 has a minimalist, angular cabinet with no visible fasteners, which fit the brand's Scandinavian design approach. It was often paired with other B&O electronics like the BeoCenter or BeoCombi systems.
Sound Signature
The S80/2 sounds neutral and detailed, with clear sound and accurate spatial placement. The phase-aligned crossover and Acoustic Lens tweeter give a wide, stable soundstage with pinpoint imaging. Bass is tight and well controlled, though not heavily emphasized. The high end is smooth and the midrange is balanced.
Maintenance and Restoration Tips
Because of their age, vintage S80/2 speakers may need maintenance to get back to full 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, based on 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 bring higher prices among audiophiles.
The S80/2 is not as rare as some limited B&O models. It is still a respected example of 1980s high-end speaker engineering.
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