For most audiophiles, listening to a pair of AT-1s for the first time on demanding material with extremely low bass is a bit of a shock. Loudspeakers of this modest size with a pair of small 5 1⁄4-inch woofer-midrange drivers deliver a degree of bass power combined with acoustic detail rarely experienced in speakers of any size or price. The Atlantic Technology AT-1 utilizes two 5 1⁄4-inch drivers in an enclosure of approximately 1.6 cubic feet to produce bass that extends to 29 Hz (-3dB) at Sound Pressure Levels that exceed 106dB. Bass harmonic distortion is under 3 percent. The AT-1 also uses an exceptionally advanced 11⁄8-inch Low-Resonance Tweeter (LRTTM) that affords a lower crossover frequency (2000 Hz) than is normal in a two-way system. In the case of the AT-1, hearing is believing.