The new 705 Signature and 702 Signature models share a common philosophy with their predecessors: like previous Signatures, the new models are carefully upgraded and lavishly finished loudspeakers that represent the apex of current Bowers & Wilkins design, engineering, and manufacturing processes. A huge amount of care and attention has been paid to improving their acoustic performance via an upgraded crossover design, and also to carefully crafting the luxurious new cabinet finish.
B&W 702 Signature £4,499 available here https://shop.martinshifi.co.uk/products/bowers-wilkins-702-signature
B&W 705 Signature £2,699 available here https://shop.martinshifi.co.uk/products/bowers-wilkins-705-signature
Launched in 2017, the elegant Bowers & Wilkins 700 Series range of speakers already delivers exceptional performance thanks to its careful use of technologies first seen in the high-end 800 Series Diamond, such as the Solid Body Tweeter-on-Top assembly, unique Continuum cone drivers and Aerofoil profile bass drivers. Used in combination with bespoke 700 Series technologies such as the Carbon Dome tweeter plus carefully optimised and rigid cabinets, the result is a range of loudspeakers as superb to listen to as it is to look at.
As Signature products, the new 705 & 702 Signature have received further, detailed improvements enabled by upgraded crossover designs and components.
Both models now feature specially treated and upgraded bypass capacitors sourced from Mundorf, larger heatsinking and, in the case of the 702, an upgraded LF capacitor on the bass section of the crossover. In tandem with the immense benefits both models enjoy as a result of their Tweeter-on-Top configuration, these upgrades improve the already-remarkable resolution, openness and spatial retrieval on offer, lending them an even-more polished, refined and involving sound.
Keeping up with established Signature practices, the 705 and 702 Signature boast a stunning new Datuk Gloss ebony-coloured veneer with a distinctive, beautiful grain. This custom-designed finish combines the beauty of exotic real-wood veneers with the environmental benefits of a sustainably-sourced supply, in this case from specialist Italian wood company Alpi.
Each pair of speakers is unique, with no two models sharing the same grain pattern or figuring. Bowers & Wilkins adds to Alpi’s painstaking workmanship by applying nine coats of finish – including primer, base coat and lacquer – to create a deep, lustrous appearance. To further accentuate and highlight the quality of finish on each model, both Signature speakers have bright metal trim rings around the mid/bass and midrange cones plus bright, silver- finished tweeter grilles. Finally, both models have a Signature identity plate to their rear panel, turning each speaker into a genuine and unique piece of art.
Carbon Dome Tweeter
Both 700 Series Signature models feature Bowers & Wilkins Carbon Dome tweeter technology. Designed to bridge the performance gap between the Aluminium Double Dome used in the 600 Series and the Diamond Dome used in the 800 Series Diamond, the Carbon Dome is composed of two sections. The front portion is a 30-micron aluminium dome that has been stiffened by a PVD (Physical Vapour Deposition) coating of carbon. The second section is a 300-micron carbon ring that has been profiled to match the form of the main dome. This is then bonded to the inner face of the structure. The outcome is exceptional stiffness and resistance to distortion without undue mass and a first break-up point of 47kHz.
Solid Body Tweeters
As with all preceding Signature products, the 705 Signature and 702 Signature are Tweeter-On-Top designs featuring, in this case, Solid Body Tweeter technology. This design is derived entirely from the approach used in the 800 Series Diamond and has the same performance benefits. As with the 700 Series speakers, instead of using a hollow zinc housing, the new Signature models use the same shape milled from a solid mass of aluminium to provide a stiffer and less resonant structure. Weighing over 1kg, it is exceptionally inert, and benefits from the same decoupling mechanism and acoustically transparent grille design as the 800 Series Diamond. This design also allows the use of the mass of the tweeter body as a heatsink for the dome.
Continuum cone midrange drivers were first seen in the 800 Series Diamond. The Continuum cone’s design is based on the concept of optimised and controlled flexibility. This helps the cone to avoid the abrupt transition from pistonic to break-up mode behaviour that drastically impairs the openness and neutrality of a conventional drive unit. Continuum is a woven composite that gives highly controlled break-up, for a more transparent and detailed midrange.