Castle History and Philosophy（Release）
Founded in Yorkshire on the 3rd of September, 1973 by William ‘Bill’ Escott (Formerly of Wharfedale) and John Collinson (Formerly of Wharfedale and QUAD), Castle Acoustic with a vision was to create a brand that is at one with acoustic performance, design and engineering – a breed of products with a perfect balance in form and function.
Taking its name and logo from the 11th-century Skipton Castle, the company was formed with the founding concept of being a complete loudspeaker manufacturer and being the first loudspeaker company to design and manufacture everything from drive units to laying handpicked veneers under one roof!
Innovation and Challenge
Crafting a New Era
Castle's Veneers
Even to this day, all of Castle's veneers are carefully selected by our team of experienced staff, some of whom have more than thirty years of expertise in selecting the right veneer for each application.
Veneer sections are glued to individual panels and then held under high pressure in purpose-built clamps for the glue to dry naturally over 48 hours. On completion, each cabinet is hand-sanded and varnished to perfection, with the quality and consistency of the finish checked every step of the way.
Each leaf of the veneer is selected by eye to suit the size of the cabinet, and each pair of the cabinet is manufactured in mirror-image-matched pairs, even the black ash ones.
Castle selects the finest crown cut quality veneers from around the world and, whenever possible, from properly managed forest resources.
Cabinet Construction
While our loudspeakers are visually stunning, the speaker cabinet plays an equal part in it's high performance sound.
Our engineers work hard to develop unique acoustic properties of the cabinets as well as the drivers themselves. In-house manufacturing gives us the major advantage of being able to develop cabinets and drivers in tandem and carry out fundamental research into the interactions between the drivers, crossovers, and the cabinet. Our integrated design approach gives us the further benefit that systems can avoid complex crossovers. It is widely understood that fewer high-quality components in a simple crossover network provide a cleaner sound.
Here, we can see an illustration of a Castle Knight speaker, which utilises a unique approach to transmission-line loudspeaker design. Using twin pipe technology and the cabinet's internal volume, bass response is extended, diminishing the need for unruly reflex ports.
In most loudspeaker designs, room modes are easily excited by forward or rear-facing ports, resulting in a ‘boomy’ sound. This twin-pipe system couples the bass response within the cabinet enclosure using a twin-pipe quarter-wave design for a smooth and even bass response.
That is what made Castle unique among theburgeoning diversity of loudspeaker manufacturers in the ‘70s and ‘80s: theirinsistence on in-house design and manufacture of all the drive units andelectronic components in their loudspeakers, as well as the beautifullyhandcrafted real wood-veneered cabinets used to enclose them.
Drive Units
The drive units form the heart of any speaker system, and their quality is key to its sonic capability. Our drivers are developed to the highest standards, often featuring new and innovative technology.
We have also designed our tweeters to match the sonic performance of our bass units and so to enhance all musical accuracy of all Castle loudspeakers. They offer extended and substantially flat response characteristics with very low distortion and are married with bass units through crossovers built with the highest quality components.
Most of the bass units in our range feature cones made from woven carbon fibre, a light yet exceptionally stiff material with good internal damping. Our voice coil formers have exceptional power handling ability, while we also use innovative magnet assemblies with the highest quality copper and aluminium wire.
This means a far more linear motion is maintained, improving accuracy and dynamics, while reducing distortion, the latter results in a reduction of the moving mass of the driver, a vital parameter in producing speakers capable of maximising the impact of modern source components and program material.
A Complete Made in UK Range
The Windsor Series marked an important moment in Castle’s modern history: the return of Castle loudspeaker manufacturing to the United Kingdom. More than just a statement of engineering capabilities, Windsor reconnected the brand with the British design, engineering and cabinet-making principles on which the Castle reputation was first built.
In 2026, the introduction of the Tintagel and Walmer series completed the modern-day position with a coherent, Made in UK loudspeaker family, giving music lovers a choice of models that share the same philosophy but serve different rooms, systems and listening ambitions.
Tintagel represents the accessible heart of this renewed range and carries Castle’s familiar warmth, natural voicing and furniture-grade craft into forms that are easy to place, easy to drive and easy to enjoy. Its advanced fibre drive units, smooth silk-dome treble and room-friendly balance make Tintagel a natural choice for listeners who want a real British loudspeaker that feels at home in everyday living spaces.
The Walmer series sits further up the range, with a more technically advanced expression of the Castle sound. With woven carbon fibre drive units, true ribbon high-frequency performance, and, in Walmer 2, a dedicated three-way floorstanding architecture, Walmer adds greater resolution, openness, and scale while remaining unmistakably Castle: elegant, natural, beautifully finished, and built for long-term musical enjoyment.
Windsor stands as the flagship expression of the brand’s return to British manufacturing. Tintagel brings that philosophy to a wider audience. Walmer extends it with a more ambitious acoustic platform.
Each series has its own character, but all share the same belief: that a loudspeaker should be designed, engineered, built and finished with care, and that performance should never be separated from the craft that creates it.
True to the origins of the brand, Castle is now a complete family of Made in the UK loudspeakers, built around real wood cabinetry, controlled acoustic engineering, natural musicality and the quiet confidence that has defined Castle since 1973.
