Bowers & Wilkins 805 D4 Ex-Demonstration Gloss Black

These are ex-demonstration Bowers & Wilkins 805 D4 standmount loudspeakers in Gloss Black, available at a significant saving against the original retail price. They have been used in our Norwich showroom for demonstration purposes only, and are in excellent condition. Both speakers are supplied complete with all original accessories and packaging. Shipping costs vary depending on location — please contact us before purchasing to discuss delivery, and we are happy to talk through any part-exchange or trade-in you may have in mind.

The Diamond Dome Tweeter

The 805 D4's tweeter is machined from synthetic diamond — the hardest known material — allowing it to operate far beyond the limits of conventional metal or fabric domes. The result is vanishingly low distortion at the top of the frequency range, where lesser tweeters compress and colour the sound. Bowers & Wilkins mount this driver in a decoupled Tweeter-on-Top housing, isolating it from the cabinet and allowing it to operate with extraordinary precision — a design first seen on the flagship 800 D4 and now the cornerstone of the entire 800 Series Diamond range.

Continuum Cone Midrange

The 805 D4 uses Bowers & Wilkins' Continuum woven cone — a proprietary material developed over years of research to eliminate the colouration and breakup modes that afflict conventional paper and Kevlar drivers. The Continuum cone reproduces midrange frequencies with a purity and transparency that sets a new standard for a speaker of this size, resolving low-level detail and subtle tonal nuance that previously unsurpassed designs could not match.

Biomimetic Suspension

Bowers & Wilkins' Biomimetic Suspension replaces the conventional foam surround spider with an open lattice structure inspired by natural forms — dramatically reducing air flow resistance and the non-linear behaviour that blurs transient detail. The effect on timing and dynamic accuracy is immediate and unmistakable: the 805 D4 tracks the leading edge of notes with a precision that transforms the listening experience, delivering the PRAT and rhythmic coherence that separates truly great loudspeakers from merely excellent ones.

Technical Specifications

Who Is It For?

The 805 D4 is the standmount of choice for listeners who demand the full resolution and dynamic authority of the 800 Series Diamond bloodline in a compact form. It rewards high-quality amplification — partnered with a capable integrated or power amplifier, it will outperform standmounters costing considerably more at full retail. This ex-demonstration opportunity makes one of the world's finest standmount loudspeakers available at a price that would be difficult to justify ignoring.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind. Martins Hi-Fi is the second oldest Bowers & Wilkins dealer in the world — our relationship with the brand spans decades, and our team's knowledge of the 800 Series is unrivalled among UK retailers.

These ex-demonstration 805 D4s have been part of our showroom system and are known to us personally. Please contact us to discuss shipping costs before ordering — we will ensure they reach you safely and properly packaged. We are also happy to discuss any part-exchange or trade-in you may have. Speak to Dave, Chris or Tim for advice on partnering electronics and setup.

Contact us at [email protected], call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.

If you are looking to add a subwoofer to complement the 805 D4, we stock the Bowers & Wilkins DB4S and the larger Bowers & Wilkins DB2D — both designed to integrate seamlessly with speakers from the 800 Series range.