Bowers & Wilkins 805 D5 Review: Reference 800 Series Diamond Sound in a Compact Stand-Mount

Few loudspeakers carry the weight of expectation that comes with the words 800 Series Diamond. For decades, this range has been the benchmark that recording engineers, mastering studios and serious audiophiles use to judge everything else. In this Bowers & Wilkins 805 D5 review, we look at the most compact member of that famous family. It is a stand-mount that promises reference-level clarity, precision and musical scale without demanding a large room. After spending time with the engineering, the specifications and what they mean in practice, we can tell you the 805 D5 is something special.

Bowers & Wilkins 805 D5 at a Glance

The Bowers & Wilkins 805 D5 is a two-driver, vented-box reference stand-mount. It pairs a 25 mm Diamond dome tweeter in a Solid Body Tweeter-on-Top enclosure with a 165 mm Continuum™ cone bass/midrange driver. Both sit in a reverse-wrap cabinet reinforced with Matrix™ bracing, aluminium Space Frame Bracing, an aluminium top section and a solid aluminium spine. Bowers & Wilkins quotes a frequency response of 42 Hz to 28 kHz (±3 dB), extending to 34 Hz to 35 kHz at -6 dB. That is serious extension for a speaker of this size.

In short, this is the 800 Series Diamond experience distilled into a form that suits apartments, dedicated listening rooms and premium systems where a full-sized floorstander simply isn't practical.

Design and Build: Engineering You Can See and Hear

The Reverse-Wrap Cabinet

The first thing you notice about the 805 D5 is that it isn't a box. The cabinet is a continuous curved structure rather than a flat-fronted enclosure. This reverse-wrap construction reduces reflections around the drive units and moves the main cabinet join to the rear. A solid aluminium spine then locks the whole structure together. The result is a stiffer enclosure and less cabinet-edge diffraction, which is exactly what you want for pinpoint imaging. It also gives the speaker its unmistakable, sculpted 800 Series Diamond silhouette.

Enhanced Matrix Bracing and Aluminium Reinforcement

Inside, Bowers & Wilkins' upgraded Matrix™ bracing system uses interlocking internal panels to create a highly rigid structure. This is supplemented by aluminium Space Frame Bracing and an aluminium top section. Why does this matter? Every cabinet panel that flexes becomes an unwanted secondary radiator, smearing detail and colouring the sound. By suppressing that vibration, the 805 D5 delivers a blacker background, cleaner transients and a more convincing, three-dimensional soundstage. At 16.4 kg per speaker, you'll feel the solidity the moment you lift one.

Premium Finishes with Leather by Connolly

The 805 D5 comes in four finishes: Stealth Black, Warm White, Dark Walnut and Light Walnut. Stealth Black and Dark Walnut come with black grilles, while Warm White and Light Walnut feature grey grilles. Matching Leather by Connolly trim finishes the cabinet with real luxury-object appeal. Whichever finish suits your space, the fit and finish is as refined as the sound. If you're weighing up which finish will best suit your room and décor, our team is always happy to talk it through on 1300 308 711.

The Diamond Dome Tweeter: Treble Without Compromise

The heart of any 800 Series Diamond speaker is its tweeter, and the 805 D5 gets the full-fat 25 mm Diamond dome. Diamond combines extremely low mass with outstanding stiffness. That pushes the tweeter's break-up frequency to approximately 70 kHz, far beyond the limits of human hearing.

This matters because cone and dome break-up modes are what give many tweeters their tell-tale edge, glare or fatigue. Moving that resonance well outside the audible band lets the 805 D5 reveal the finest recording details: the decay of a ride cymbal, the rosin on a violin bow, the air around a vocalist. It does this without harshness or excessive brightness. The treble is extended, open and effortless. It is the kind of high-frequency performance that lets you listen for hours.

Solid Body Tweeter-on-Top

Rather than mounting the tweeter in the main cabinet, Bowers & Wilkins isolates it in a rigid Solid Body Tweeter-on-Top housing. Separating it from the bass/midrange driver reduces interference from cabinet vibration. The elongated, streamlined enclosure also minimises diffraction around the driver. In listening terms, that means sharper stereo imaging, a more precisely focused centre image and a more natural sense of space around voices and instruments. The speakers tend to disappear, leaving just the performance hanging in front of you.

The 165 mm Continuum Cone: A Midrange That Breathes

A single 165 mm Continuum™ cone handles bass and midrange duties. It is responsible for the most emotionally important part of the audio band: vocals, piano, guitars, strings and the body of nearly every acoustic instrument. The Continuum cone is designed to behave smoothly across its operating range, avoiding the abrupt resonance characteristics of some conventional cone materials.

That smooth, well-damped behaviour translates to vocals that sound natural and unforced, instruments that are clearly defined in their own space, and a tonal balance that works across a wide range of music. Jazz, classical, acoustic folk, rock and electronic are all handled with the same composure.

The Anti-Resonance Plug

Positioned within the Continuum driver, the Anti-Resonance plug improves mechanical control and reduces unwanted cone behaviour. It is a subtle refinement with an audible payoff. The midrange stays clear and focused, so fine textures and micro-details remain intact even through complex, dynamic passages. Think of a full orchestral crescendo or a dense rock mix, where lesser speakers tend to congeal.

Flowport Bass: Big-Speaker Weight from a Stand-Mount

Bass extension is where compact speakers usually reveal their limits, and it is where the 805 D5 surprises. Its Flowport™ bass-reflex system uses a carefully shaped, dimpled surface to reduce air turbulence moving through the port. Less turbulence means less chuffing noise and less compression. That matters most during bass-heavy music and at higher volumes, when conventional ports can sound strained.

With response rated to 42 Hz at ±3 dB and extending to 34 Hz at -6 dB, the 805 D5 delivers low-end weight and control that belies its footprint. Double bass has proper texture and pitch definition, kick drums land with authority, and orchestral bass lines have genuine foundation. For most rooms, it offers full-range enjoyment from a speaker that stands just 439 mm tall.

Sound Quality: What the Engineering Adds Up To

Put all of this technology together and you get a loudspeaker defined by transparency, speed and spatial precision. The Diamond tweeter and Tweeter-on-Top housing give the 805 D5 a wide, deep and remarkably well-layered soundstage, with images that lock into place with holographic focus. The Continuum cone and Anti-Resonance plug deliver a midrange that is articulate and lifelike. The heavily braced reverse-wrap cabinet provides the silent backdrop that lets low-level detail and ambience come through.

The measured figures back up the refinement. Bowers & Wilkins quotes harmonic distortion of less than 1% from 90 Hz to 20 kHz, and less than 0.3% from 120 Hz to 8 kHz. That second band covers the critical vocal and instrumental range where our ears are most sensitive. Low distortion there is a big part of why the 805 D5 sounds so clean, natural and easy to listen to at any volume.

System Matching: Getting the Best from the 805 D5

Amplification

The 805 D5 has a sensitivity of 88 dB (2.83 Vrms/1 m), a nominal impedance of 8 ohms and a minimum impedance of 4.6 ohms. Bowers & Wilkins recommends a very broad amplifier range of 50 to 1,000 watts into 8 ohms on unclipped programme material. That wide window tells you the speaker is both accommodating and able to take serious power.

That said, this is a reference transducer and it rewards quality. An amplifier with stable current delivery and a strong grip on the bass driver will reveal its full dynamic capability, tonal subtlety and low-frequency control. Pairing electronics with speakers of this calibre is exactly the kind of thing we love helping with. Give our team a call on 1300 308 711 and we'll help you build a system that lets the 805 D5 perform at its best.

Cabling

Bowers & Wilkins specifies a maximum recommended cable impedance of 0.1 ohm. Quality speaker cable of an appropriate gauge for your run length will keep the amplifier-to-speaker connection as transparent as the speakers themselves.

FS-805 Stands and Placement

For best results, Bowers & Wilkins offers the purpose-built FS-805 speaker stands in Black and Titanium finishes (sold separately). They place the 805 D5 at an appropriate listening height and provide a secure, stable acoustic foundation. That is essential for getting the most out of the Tweeter-on-Top's imaging and the Flowport's bass. With a rear-firing reflex design, a little care with distance from the back wall will help you dial in the ideal bass balance for your room.

Who Is the Bowers & Wilkins 805 D5 For?

• Apartment and city dwellers who want genuine reference sound without floorstanders dominating the room.
• Dedicated listening room owners with small to medium spaces who want the 800 Series Diamond signature, scaled to suit.
• Upgraders from premium bookshelf speakers ready to step into true high-end territory.
• Critical listeners and home studio enthusiasts who value transparency, low distortion and accurate imaging.
• Design-conscious buyers who want a speaker that looks as extraordinary as it sounds, with finishes and Connolly leather to match premium interiors.
• Home theatre builders looking for a compact, reference-grade speaker as part of a high-end system.

Not sure whether the 805 D5 or a larger 800 Series Diamond model is the right fit for your room? That's a conversation our team has every day. Email us at sales@theaudiotailor.com.au and we'll point you in the right direction.

Pros and Cons

Pros

• Genuine 800 Series Diamond reference performance in the range's most compact form
• 25 mm Diamond dome tweeter with break-up pushed to approximately 70 kHz for clear, fatigue-free treble
• Solid Body Tweeter-on-Top delivers exceptional imaging and soundstage depth
• 165 mm Continuum cone with Anti-Resonance plug for a natural, detailed midrange
• Impressive bass extension (42 Hz ±3 dB; 34 Hz at -6 dB) with low-turbulence Flowport
• Extremely rigid reverse-wrap cabinet with Matrix bracing, aluminium Space Frame, top section and spine
• Very low distortion: under 0.3% from 120 Hz to 8 kHz
• Wide amplifier compatibility (50 to 1,000 W into 8 ohms)
• Stunning finishes with Leather by Connolly trim
• Ideal for smaller rooms where floorstanders aren't practical

Cons

• Rewards high-quality amplification, and you'll want to give it the partnering electronics it deserves
• Dedicated FS-805 stands are sold separately
• Once you've heard this level of transparency, going back to lesser speakers is difficult

Bowers & Wilkins 805 D5 Technical Specifications

Specification	Details
Product Type	Reference stand-mount loudspeaker
Enclosure Design	Vented-box system
High-Frequency Driver	1 × 25 mm Diamond dome tweeter
Bass/Midrange Driver	1 × 165 mm Continuum cone driver
Frequency Range	34 Hz – 35 kHz at -6 dB
Frequency Response	42 Hz – 28 kHz, ±3 dB
Sensitivity	88 dB at 2.83 Vrms/1 m
Nominal Impedance	8 ohms
Minimum Impedance	4.6 ohms
Recommended Amplifier Power	50 – 1,000 W into 8 ohms on unclipped programme
Maximum Recommended Cable Impedance	0.1 ohm
Harmonic Distortion	<1% from 90 Hz – 20 kHz; <0.3% from 120 Hz – 8 kHz
Height	439 mm including tweeter
Width	241 mm
Cabinet Depth	322 mm
Depth with Grille and Terminals	363 mm
Net Weight	16.4 kg per speaker
Cabinet Finishes	Stealth Black, Warm White, Dark Walnut, Light Walnut
Grille Finishes	Black or grey, depending on cabinet finish
Compatible Stand	Bowers & Wilkins FS-805 (sold separately)

Frequently Asked Questions

Is the Bowers & Wilkins 805 D5 suitable for small rooms?

Yes. It is the most compact speaker in the 800 Series Diamond range and is designed for smaller listening rooms, apartments and premium systems where space is limited.

How much bass does the 805 D5 produce?

The 805 D5 is rated to 42 Hz at ±3 dB and extends to 34 Hz at -6 dB, so it delivers impressive low-frequency depth for a stand-mount.

What amplifier do I need for the 805 D5?

Bowers & Wilkins recommends 50 to 1,000 watts into 8 ohms. A high-quality amplifier with stable current delivery will get the most from it. Our team can recommend pairings to suit your budget and room.

Our Verdict: The 800 Series Diamond Experience, Perfectly Scaled

The Bowers & Wilkins 805 D5 proves that reference sound isn't reserved for those with large rooms. Its Diamond dome tweeter, Solid Body Tweeter-on-Top, Continuum cone with Anti-Resonance plug, Flowport bass and heavily reinforced reverse-wrap cabinet all work towards the same goal: getting out of the way of the music. The result is a stand-mount with astonishing clarity, pinpoint imaging, a natural midrange and bass that punches well above its size, all wrapped in some of the most beautiful cabinetry in high-end audio.

If you've been dreaming of 800 Series Diamond ownership but thought your space couldn't accommodate it, the 805 D5 is your answer. It's a destination speaker, the kind you buy once and enjoy for years.

Ready to take the next step? Explore the Bowers & Wilkins 805 D5 on our website, or have a chat with Gabby, Nathan, Vaughan or Isaac. Call 1300 308 711 or email sales@theaudiotailor.com.au. As Sound+Image's HiFi Retailer of the Year for 2021 and 2022, we'll help you build a system tailored to your room, your music and your budget, and we ship Australia-wide.