Wharfedale Diamond 12.Ci Centre Speaker

Wharfedale Diamond 12.Ci Centre Speaker

The Wharfedale Diamond 12.Ci centre channel is the audio visual partner to the latest Wharfedale Diamond 12i series. It provides the same great midrange clarity and depth that the stereo speakers convey and is the perfect partner for an all Wharfedale home cinema system. This 12i range is all about incremental updates to the cabinet construction and sound quality accompanied by three great looking new finishes. At the price, the Wharfedale Diamond 12.Ci centre channel is absolutely cracking value for money.

Wharfedale just had to make the Diamond 12.Ci. What a waste it would have been if they had spent all that time and creative energy on the Diamond 12i stereo speakers and then hung the home theatre enthusiast out to dry. Fortunately, Wharfedale are the good guys and they smiled on all us movie lovers by carefully crafting a matching centre channel that provides a perfect cinema soundstage when used with other Diamond 12i models. The Diamond 12.Ci employs a clear sounding 1” (25mm) textile dome tweeter and dual kick-ass Klarity™ cone 5” (127mm) mid/bass drivers.

Developed in Cambridgeshire, England since 1982, Wharfedale’s famous Diamond speakers have served as the classic entry point to true high-fidelity sound, their exceptional sonic value for money earning numerous ‘product of the year’ accolades in the UK and around the world. With the introduction of the Diamond 12i Series, Wharfedale once again raises the bar for affordable, high-performance loudspeakers.

A Design Legacy — Now with a Contemporary Edge

The Diamond 12 Series raised the bar in its category for sound quality, design, and musical engagement. Now, Wharfedale’s in-house team has further developed the series, focusing not on reinventing but on refining and improving.

The series now includes three beautiful new finishes that complement modern interiors:

• All-Black: A deep, rich semi-matte finish that offers a sleek, contemporary look—subtle and sophisticated.
• Classic Walnut with Semi-Matte Black Baffle: A timeless classic reimagined, blending the natural warmth of walnut with a clean, contrasting baffle for a premium appearance.
• Stone Grey: A striking modern option that suits minimalist styles and stands out.

Known for quality, affordability, and exceptional build quality, the Wharfedale Diamond series has always prioritised fit and finish. The new luxurious finishes enhance the loudspeaker’s premium look and feel, matching its impressive sound performance.

Incremental Acoustic Enhancements

Along with the aesthetic upgrade, Wharfedale’s engineering team revisited the speaker’s internals, paying special attention to bass port tuning and airflow control. Small but significant changes to the port design and internal damping have improved bass clarity and low-frequency control - especially in real-world environments. Listeners will notice the difference.

A thorough port design effort led by Wharfedale’s Director of Acoustic Design, Peter Comeau, and senior engineers Dan Bailey Ornellas and Oliver Davies aimed to refine low-frequency performance through extensive empirical testing and listening evaluations. The development process lasted several months and included advanced techniques, such as laser interferometry, extensive anechoic and in-room measurements, and computational fluid dynamics (CFD) to assess airflow and pressure in the port structure. Critical listening sessions - totalling hundreds of hours - were held to confirm the results. The outcome is a bass response that is better controlled and more articulate, with improved transitions between low and mid frequencies and consistent spatial performance, no matter the placement. These changes maintain the Diamond 12’s signature neutrality while subtly increasing listener engagement and dynamic flow.

At the Core: Klarity™ Cone Technology

The Diamond 12i mid/bass driver cones remain unchanged and are made from Klarity™, a special blend of polypropylene and mica that provides excellent stiffness and low distortion. This results in a cone that is lightweight, well-damped, and very responsive, delivering natural, expressive dynamics and precise transient response.

A low-damping surround enhances the cone’s efficiency and dynamic range, while ribbed shaping and profile simulation ensure a smooth, linear frequency response without added distortion.

Advanced Magnet Assembly

Each mid/bass driver features a precise magnet system with an aluminium compensation ring to reduce the effects of inductance changes as the voice coil moves. This advanced motor system minimises intermodulation and distortion, producing cleaner, more accurate sound.

The voice coil is wrapped around a high-power epoxy/glass fibre bobbin, which performs significantly better than standard materials at this price point, offering greater power handling, thermal stability, and structural strength.

25 mm Textile Dome Tweeter

High frequencies are produced by a 25 mm woven polyester dome with a high-loss damping coating, resulting in extended, smooth treble response. The front plate is designed acoustically with a flat profile and minimal waveguide to enhance dispersion and output. The result is clear, natural high frequencies with excellent off-axis performance.

High-Quality Crossover Components

Wharfedale’s engineers use a sophisticated Linkwitz-Riley crossover design, complete with air-core inductors—components typically found in high-end speakers. The crossover network is finely adjusted for minimal phase shift and smooth integration between drivers.

The magnet structure for the mid/bass driver is modified to address the resistance of these high-quality inductors, ensuring fast, clean bass without compromise.

Low-Resonance Cabinet Design

Each enclosure features a multi-layered sandwich construction that reduces panel resonance and distortion. Even the adhesive properties between the layers have been acoustically tested to optimise damping.

Inside, intelligent spot bracing connects opposite cabinet walls using computer-modelled braces that reduce vibration without passing it from one surface to another. This contributes to the solid and authoritative sound signature of the Diamond 12i series.

Preserve the Essence, Perfect the Experience

Overall, the new Diamond 12i series is sure to impress. The changes may seem minor, but the impact is significant. It looks, feels, and performs like something new because it is. Yet, it still retains all of the qualities that made the original iteration so special!

Why Choose The Wharfedale Diamond 12.Ci?

The Wharfedale Diamond 12.Ci Centre Speaker is the missing link that turns a good Diamond 12i setup into a seriously immersive home cinema rig. Designed to slot seamlessly alongside the rest of the Wharfedale Diamond 12i Series, it delivers the same rich midrange clarity and depth, locking dialogue dead-centre with impressive authority and nuance. Under the hood, you’ve got a sweet, open 25 mm textile dome tweeter paired with dual 5” Klarity™ cone mid/bass drivers that punch well above their weight, keeping voices crisp and effects tight without a hint of strain. The incremental tweaks to port tuning and internal damping - painstakingly refined by Wharfedale’s Cambridgeshire team - translate into cleaner, more articulate bass and smoother transitions, even in real-world lounge rooms. Add the low-resonance, multi-layer cabinet and those sharp new finishes, and you’ve got a centre channel that doesn’t just keep up with the action - it anchors it. At the price, it’s absolutely cracking value and proof that Wharfedale still knows how to build a crowd-pleasing overachiever.