A Feast for the Ears and Eyes

With breakthrough Twin Drive Transmission Line technology, combined with real wood veneers, hand crafted and polished to perfection - Castle Avon 4 is a delight to both eyes and ears.

Determined to both perfect and take advantage of the Transmission Line speaker principles, Castle engineers embarked on a three year investigation into the acoustics, mathematics and all performance aspects of such loudspeakers. The result was a break through in TL Theory. In its simplest explanation, driving the line at two distinct points overcomes both the damping problem and loss of energy, resulting in a smooth power response from the lowest fundamentals right through to the midrange frequencies.

Castle has called this breakthrough technology TDTL - Twin Drive Transmission Line and is, for the very first time, in the new Avon 4 floor standing loudspeaker.

The Avon ribbon tweeter design uses an ultra-thin alloy sandwich precisely positioned in a powerful transverse magnetic field, where the ribbon acts as both the voice coil and diaphragm. In this way the whole radiating area is driven directly and responds accurately to the music signal. Together, the direct drive and low mass of the ribbon provide superb musical detailing and transient attack, resolving the harmonic content of the music in a thrilling and natural way.

Available in either Black or Cherry finish the Avon 4 looks great, which is a bonus, but in the end it’s all about the music – so come look and listen for yourself.

“The dry, low bass of the transmission line better resolved the character of the bass instruments than just about any loudspeaker I’ve heard before.” Hi-Fi World, 5 Globe Award, October 2015