A thoroughly modern approach to full range driver design. Superlinear CNC machined suspension, high tech cone materials, underhung voice coil to maximize linearity, +/- 3mm xmax to allow bass extension. These drivers have been optimized to be placed it a tapered quarter wave cabinet for extended bass response. High efficiency, easy to driver impedance for tube amplifiers. These designs provide both the breath of life of a high-efficiency design and the high resolution and linearity of modern speakers.