Some 20 years ago, Walter Schupbach produced the Stereolith, in the truesense of the term a nonconformist creation in the loudspeaker market. Sofar, Schupbach's Stereolith single-unit loudspeakers have projected broad-frequency-band signals to the right and the left. His new, daring approach(Monitor 232), goes as far as to emit the high-frequency band in amonophonic way. Schupbach's latest findings have encouraged him torealize this apparent madness. According to his on-going research, it is the1 kHz frequency band that produces the natural, spatial projection of sound.