Bang & Olufsen Beolufsen 505 (1970)
The Bang & Olufsen Beolufsen 505 is a pair of passive bookshelf or stand-mounted loudspeakers introduced in 1970 as part of B&O’s integrated hi-fi system approach. They were designed to go with receivers like the Beomaster 1900. The cabinet has a beech wood veneer finish and a plain Scandinavian look, and the sound is warm and balanced. B&O aimed them at buyers who cared about both looks and function.
The 505 was not a flagship. It was a mid-tier B&O model of the early 1970s, built to fit into the company's matched-system approach.
Specifications
| Feature | Specification |
| Model | Beolufsen 505 |
| Brand | Bang & Olufsen |
| Year of Release | 1970 |
| Production Period | 1970–1974 |
| Type | Passive, 2-way loudspeaker |
| Enclosure | Bass reflex (ported) |
| Drivers | 1x woofer, 1x tweeter (exact sizes not documented) |
| Impedance | 4–8 ohms (typical for B&O of this era) |
| Power Handling | Not officially specified (passive design) |
| Sensitivity | Unknown |
| Crossover | Internal, 2-way (exact frequency not documented) |
| Finish | Beech wood veneer with removable fabric grille |
| Dimensions (approx.) | 30 cm H × 18 cm W × 22 cm D |
| Weight | ~5 kg per speaker |
| Compatibility | Designed for use with B&O amplifiers (e.g., Beomaster 1900) |
Historical Context
The Beolufsen 505 came out as Bang & Olufsen was building its reputation for high-fidelity audio systems in clean, matching designs. It was released at the start of the 1970s and was part of a wider family of components that were meant to look and work together. In this period B&O pushed modular, matching systems where speakers, amplifiers, and turntables shared materials, proportions, and design cues.
The 505's beech wood construction and clean lines follow the minimalist Scandinavian look that defined B&O. Many contemporary brands chased raw performance. Bang & Olufsen focused on user experience, integration, and longevity. The 505 was never meant to compete with high-end audiophile speakers. It offered a balanced sound for everyday listening in stylish homes.
These speakers were often paired with the Beomaster 1900 receiver and Beogram turntables. Together they made a complete, matching setup that appealed to design-conscious buyers across Europe and North America.
Sound Signature
The Beolufsen 505 has a warm, balanced sound, typical of Bang & Olufsen's consumer designs of the era. The midrange is clear and present, so vocals and acoustic instruments sound natural. The bass reflex enclosure boosts the bass and gives a sense of fullness without excessive boominess.
The highs are smooth and non-fatiguing, though not as detailed or extended as those from B&O's higher-end models like the Beolab series. The 505 suits jazz, classical, and vocal-centric music, especially when driven by matching B&O electronics.
Maintenance and Restoration Tips
Due to their age, Beolufsen 505 speakers often need some restoration to perform and look their best:
- Foam Surround Replacement: The most common issue is deteriorated foam surrounds on the woofers. Replacing them with modern rubber or foam kits restores bass response and prevents further damage.
- Grille Fabric: The original fabric on the removable grilles may be faded or torn. Replacement with period-correct or neutral fabric can improve appearance.
- Veneer Care: Clean the beech wood veneer with a soft, dry cloth. For deeper restoration, light polishing or professional refinishing may be needed to restore luster and remove scratches.
- Terminal Maintenance: Check speaker terminals for corrosion. Clean with contact cleaner and ensure solid connections to prevent signal loss.
- Crossover Inspection: While generally reliable, older capacitors in the internal crossover may degrade. An audio technician can assess and replace components if necessary.
Collectibility and Market Value
The Beolufsen 505 has moderate collectible appeal, rated around 5/10. It isn't as sought-after as the rare Beolab models, but collectors of vintage B&O systems and Scandinavian design fans go for it. Its value comes more from looks and history than from sound.
Going by recent market trends, a pair of Beolufsen 505 speakers in good working condition typically sells for $100-300. The price depends on cosmetic state, completeness (including grilles), and whether restoration has been done. Fully restored pairs with matching B&O electronics may bring higher prices in niche markets.
Conclusion
The Bang & Olufsen Beolufsen 505 stands as a testament to the brand’s 1970s vision of integrated, design-forward audio systems. While modest in specifications, its elegant construction, cohesive styling, and warm sound make it a charming addition to any vintage hi-fi setup. For collectors and fans of Scandinavian design, the 505 offers an accessible entry point into the world of classic B&O audio.
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