Bowers & Wilkins Matrix 1 (mid-1980s)

At 10 kg and just 41 cm tall, this compact monitor delivers a punch far beyond its size — if you can find a pair with intact foam surrounds.

Overview

The Bowers & Wilkins Matrix 1 isn’t trying to fill a cathedral with sound. It’s a bookshelf speaker, compact and deliberate, built for listeners who care more about precision than power. Introduced in the mid-1980s as the smallest and most affordable in B&W’s original Matrix lineup, it was engineered with the same philosophy as its larger siblings: silence the cabinet, so only the music speaks. This wasn’t just another box with drivers slapped in — it was a statement about what high-fidelity could be when resonance was treated as an enemy, not an afterthought.

Owners report a 2-way design centered around a 150 mm Kevlar mid/bass driver paired with a metal dome tweeter, a combination that delivers crisp detail and tight imaging. While it lacks the deep bass extension expected from floorstanders, its performance within its range is consistently praised. One user noted it “sounds fantastic for its size and age,” highlighting its clarity and spatial accuracy. Another called it a “classic,” expressing genuine satisfaction with its long-term performance — provided, of course, the aging components hold up.

Weighing in at 10 kg per cabinet, the Matrix 1 feels substantial in hand, a testament to its overbuilt construction. The external dimensions — 41 cm high, 32 cm wide, and 23 cm deep — suggest a modest footprint, but the internal structure is anything but simple. The name “Matrix” wasn’t marketing fluff; it referred to a radical internal bracing system that redefined how speaker cabinets could be built.

Specifications

Manufacturer	Bowers & Wilkins
Product Type	Loudspeaker
Model	Matrix 1
Drive Unit - Bass/Midrange	150 mm (5-7/8 in)
Dimensions	41 cm (high) X 32 cm (wide) X 23 cm (deep)
Weight	10 kg a piece
Frequency Response	35Hz-22kHz ±6dB
Frequency Range	55 Hz - 35 kHz (-6 dB)
System Resonance	60 Hz
Sensitivity	reportedly 87dB/W/m (2.83V)
Sensitivity	reportedly 85 dB (1W, 8 Ω)

Key Features

Matrix Bracing System – Cabinet as Structure, Not Shell

B&W didn’t just want to damp cabinet vibrations — they wanted to eliminate them. The Matrix series attacked “the other great enemy of loudspeaker accuracy: cabinet resonance” with an internal honeycomb of interlocking panels. This wasn’t simple cross-bracing; it was a structural lattice that transformed the enclosure from a resonant chamber into a rigid, inert mass. Knock on one of these cabinets, and the feedback is immediate: a dull, solid thud that hurts the knuckles. That’s not just satisfying — it’s functional. By turning the walls into “inert, dead structures,” B&W ensured that what came out of the drivers stayed pure, uncolored by boxy artifacts.

150 mm Kevlar Mid/Bass Driver

The heart of the Matrix 1’s sonic character lies in its 150 mm Kevlar cone. B&W’s use of woven Kevlar for driver diaphragms was already gaining attention for its stiffness and low mass, offering a balance between speed and durability. In the Matrix 1, this material helps maintain clarity even at higher volumes, contributing to the “great imaging and detail” users describe. However, time has not been kind to the implementation — the foam surrounds on these drivers are known to degrade, a common failure point that demands inspection before purchase.

Metal Dome Tweeter with Ferrofluid Cooling

High frequencies are handled by a metal dome tweeter, a design choice that supports extended response up to 35 kHz (at -6 dB). The inclusion of ferrofluid in the voice coil gap was advanced for its time, improving heat dissipation and reduced distortion. But like the foam surrounds, this fluid is vulnerable to drying out over decades, potentially leading to reduced output or complete failure. Owners report that while performance is excellent when intact, maintenance is not optional — it’s inevitable.

Historical Context

The Matrix 1 was the entry-level model in the original Matrix series, which launched in the mid-1980s and included the larger Matrix 2 and Matrix 3. Positioned as the smallest and most accessible, it brought B&W’s advanced cabinet technology to a broader audience. Though lacking the scale of its siblings, it carried the same engineering ethos: precision, rigidity, and sonic neutrality. It stood as one of the most respected compact monitors of its era, a testament to the idea that small speakers could still be serious tools for critical listening.

Collectibility & Value

The Matrix 1 has developed a quiet cult following among vintage audio enthusiasts. Forum users describe them as “classic” and express genuine satisfaction with their performance, especially when paired with robust amplification — one owner reported driving theirs easily with a Pioneer SX-939. However, collectibility is tempered by reliability concerns. The foam surrounds on the Kevlar drivers are prone to rot, and the ferrofluid in the tweeters can dry out, leading to performance loss or failure. While refoaming kits are available, original replacement drivers are reportedly hard to find and expensive. No official valuation data is available, but listings have appeared with prices around $150 or “Best Offer,” suggesting a modest but not negligible market.