Bang & Olufsen CX100

Name: Bang & Olufsen CX100
Brand: Bang & Olufsen

The Bang & Olufsen CX100 is a bookshelf loudspeaker introduced in 1981 as part of B&O's CX series. It has a phase-linear crossover, magnetically shielded drivers and a minimalist enclosure. B&O intended it for high-end home audio systems, particularly alongside other components from the Beosystem 5000 series.

It is over four decades old now, and vintage audio enthusiasts still respect it for its neutral sound and its looks.

Specifications

Feature	Specification
Model	CX100
Year of Production	1981–1986
Type	2-way bass reflex loudspeaker
Woofer	8-inch paper cone with foam surround
Tweeter	1-inch soft dome tweeter
Crossover	Phase-linear passive crossover
Impedance	4 ohms
Sensitivity	87 dB (2.83V/1m)
Frequency Response	45 Hz – 22 kHz (±3 dB)
Recommended Amplifier	25–100W per channel
Dimensions (H×W×D)	380 × 220 × 280 mm (15.0 × 8.7 × 11.0 in)
Weight	9.5 kg (20.9 lbs) per speaker
Enclosure Design	Sealed MDF cabinet with removable fabric grille
Finish Options	Black, walnut veneer

Sound Signature

The CX100 sounds balanced, detailed and neutral, which fits B&O's engineering approach in the early 1980s. The phase-linear crossover keeps the drivers time aligned, which helps stereo imaging and gives a wide soundstage. The 8-inch woofer gives controlled bass down to 45 Hz, and the soft dome tweeter keeps the highs smooth and non-fatiguing. The midrange is clear and uncolored, so the speaker suits vocals and acoustic music.

B&O designed these speakers to work with the rest of its system, particularly the Beosystem 5000. The drivers are magnetically shielded, so they didn't interfere with nearby televisions - a real concern in living rooms of the era.

Historical Context

The CX100 was part of Bang & Olufsen's CX series, a lineup launched in the early 1980s to offer high-fidelity audio components with advanced engineering and minimalist design. The period was a high point for B&O's global reputation. The brand was recognized for sound quality and also for its collaborations with industrial designers and architects.

The CX100 reflected the company's belief that form and function should coexist harmoniously. It has clean lines, no visible branding and a removable grille. Unlike many mass-market speakers of the time, it was engineered for long-term performance and to fit into modern interiors.

Maintenance and Restoration Tips

The CX100 is well built, but age-related wear can affect performance. Here are the common issues and recommended maintenance steps:

Foam Surround Degradation: The most frequent issue is deterioration of the woofer’s foam surrounds, which can lead to distorted bass or complete failure. Refoaming by a specialist is a cost-effective restoration method.
Crossover Capacitors: Electrolytic capacitors in the crossover network may dry out over time, altering tonal balance. Replacing these with modern equivalents can restore original performance.
Grille and Cabinet Care: The fabric grilles are replaceable but original ones in good condition add value. Clean cabinets gently with a soft, dry cloth; avoid harsh cleaners that may damage the finish.
Bi-Wiring: The CX100 features dual binding posts, allowing bi-wiring for improved dynamic range. Use high-quality speaker cables to maximize performance.

Collectibility and Market Value

The CX100 holds moderate collectible appeal, rated 6/10 for its brand heritage, design significance and solid performance. It is not as rare as some limited B&O models. Well-maintained pairs in original condition, especially in walnut veneer, command higher prices.

As of 2024, a pair of CX100 speakers typically sells for $150 - $300, depending on condition, originality and geographic market. Fully restored units with refoamed drivers and refreshed crossovers may fetch prices at the upper end of the range.

Conclusion

The Bang & Olufsen CX100 is a 1980s Danish speaker that needs occasional maintenance because of its age. Collectors of vintage audio and B&O gear still look for it.