More Than Skin Deep
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.
<img alt="" src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/DIAMOND_12i_1.webp?v=1770017255">
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.
<img alt="" src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/D12.3.4i_Artistic_Walnut_1_1.webp?v=1770017314">
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.
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/D12i_Bass.png?v=1770017358" alt="">
25mm Textile Dome Tweeter
High frequencies are produced by a 25mm 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.
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/DIAMOND_12-1_1.webp?v=1770017398" alt="">
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.
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/DIAMOND_12i_4.webp?v=1770017440" alt="">
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.
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/DIAMOND_12i_Assembly_1.webp?v=1770017477" alt="">
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!
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/Diamond_12i_Group_Black_1.webp?v=1770017516" alt="">
<img src="https://cdn.shopify.com/s/files/1/0806/9500/1374/files/WH_Diamond_12_i4_Lifestyle_Rendering_250815-1.webp?v=1770017594" alt="">
Specifications
<table class="specifications-table">
<tbody>
<tr>
<th>Model</th>
<th>DIAMOND 12.4i</th>
</tr>
<tr>
<td class="">General Description</td>
<td>2.5-way floorstanding speaker</td>
</tr>
<tr>
<td class="blod">Design Philosophy and Core Technology</td>
<td></td>
</tr>
<tr>
<td class="">Enclosure Type</td>
<td>bass reflex</td>
</tr>
<tr>
<td class="blod">Transducer Complement</td>
<td></td>
</tr>
<tr>
<td class="blod">ABR</td>
<td></td>
</tr>
<tr>
<td class="">Bass Driver</td>
<td>6.5" (150mm) advanced PP Cone</td>
</tr>
<tr>
<td class="">Midrange Driver</td>
<td>6.5" (150mm) advanced PP Cone</td>
</tr>
<tr>
<td class="">Treble Driver</td>
<td>1" 25mm) Textile Dome</td>
</tr>
<tr>
<td class="blod">Full-range Driver</td>
<td></td>
</tr>
<tr>
<td class="">AV Shield</td>
<td>No</td>
</tr>
<tr>
<td class="">Sensitivity (2.83V @ 1m)</td>
<td>89dB</td>
</tr>
<tr>
<td class="">Recommended Amplifier Power</td>
<td>30-200W</td>
</tr>
<tr>
<td class="blod">Peak Power Handling</td>
<td></td>
</tr>
<tr>
<td class="">Peak SPL</td>
<td>102dB</td>
</tr>
<tr>
<td class="">Nominal Impedance</td>
<td>8Ω Compatible</td>
</tr>
<tr>
<td class="">Minimum Impedance</td>
<td>5.0Ω</td>
</tr>
<tr>
<td class="">Frequency Response (+/-3dB)</td>
<td>40Hz - 20kHz</td>
</tr>
<tr>
<td class="">Bass Extension (-6dB)</td>
<td>35Hz</td>
</tr>
<tr>
<td class="">Crossover Frequency</td>
<td>2.1kHz</td>
</tr>
<tr>
<td class="">Cabinet Volume (in litres)</td>
<td>40.8L</td>
</tr>
<tr>
<td class="">Dimensions ( H x W x D )</td>
<td>(1100+50) x 200 x (350+28)mm</td>
</tr>
<tr>
<td class="">Net Weight</td>
<td>22.4kg/pcs</td>
</tr>
</tbody>
</table>

Wharfedale Diamond 12.4i Floorstanding Speakers (Pair)

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