The HTM81 D5 delivers our pinnacle centre channel performance and can be paired with either the 801 D5 or the 802 D5 for truly powerful and immersive home theatre experiences.
Engineered with the same advanced technologies as the rest of the flagship 800 Series Diamond range, it features our Diamond dome tweeter, Solid Body Tweeter-on-Top, a decoupled Continuum cone midrange drive unit and twin Aerofoil bass cones.
Introduce HTM81 D5 to your home setup and experience your movies with even more depth, clarity and life. Available in Stealth Black, Warm White and Dark Walnut with an optional matching floorstand, available separately, for seamless installation.
800 Series Diamond D5
It took us 60 years to make loudspeakers this good. Not because we were working slowly. Because we refused to stop.
Every generation of 800 Series begins with the same question: what stands in the way of the music? And every generation answers it: in new materials, in advanced engineering, in the things you cannot see but will absolutely hear.
The new 800 Series Diamond is the furthest we have ever gone. The same iconic form. A completely different standard of sound. Musicians record with it because they trust it. Engineers mix with it because it tells the truth. Listeners keep it for life because nothing else comes close.
True Sound. Nothing added. Nothing taken away. 60 years in the making.

Diamond dome tweeter
Diamond dome tweeter technology remains at the heart of 800 Series Diamond. Exceptionally stiff yet incredibly light, diamond pushes the break-up frequency to an extraordinary 70kHz — far beyond human hearing — delivering outstanding clarity, precision and openness. Grown using advanced chemical vapour deposition, each dome ensures unrivalled detail and natural sound reproduction.
Solid Body Tweeter
The latest incarnation of our iconic Solid Body Tweeter-on-Top housing features an elongated form with a longer tube-loading system and an all-new design of tweeter grille that has been optimised to produce an even more free and open sound with high frequencies. As before, the carefully decoupled housing is milled from a single solid block of aluminium to better resist resonance.
Continuum™ Cone
Thanks to its composite construction, the Continuum™ cone avoids the abrupt transitions in behaviour that can impair the performance of a conventional drive unit. The result is a more open, neutral performance that delivers voices and instruments with precision and transparency.
Enhanced Matrix™
Matrix™ bracing uses interlocking panels to reinforce the internal walls of loudspeaker cabinets in all directions, reducing resonance and creating a more believable soundstage. Every model in the new 800 Series Diamond benefits from an upgraded Matrix design that combines solid plywood construction with aluminium bracing to reinforce key stress points.