Half Rack Sonic Maximiser released in 1997 - PRISTINE Condition! Designed to compensate for the common inadequacies of conventional loudspeakers; to overcome is the inherent envelope distortion that's caused by any filtering process. Signals of different frequencies are delayed by different amounts as they pass through a filter, and so the timing relationships of the fundamental frequencies and harmonics are altered. It is claimed that this can be perceived as a loss of 'integrity' in the audio quality — sounds taking on a muddy or smeared character. The BBE 262's signal processing splits the audio signal into three bands: 20Hz‑150Hz, 150Hz‑1200Hz, and 1200Hz‑20kHz. The lowest band is delayed by about 2.5ms through the action of a passive low‑pass filter. The middle band is delayed by about 0.5ms through an active band‑pass filter (thereby causing high fundamentals or low harmonics to exit the unit before the lowest fundamentals). The highest band is not delayed at all; it's processed by a voltage‑controlled amplifier whose gain is determined by the average loudness of both the middle and high bands, so that the high‑frequency harmonic content can be 'optimised'. In the case of the 262, all this signal processing is performed within a single dual‑channel integrated circuit. w/box, manual and 12VAC PSU.
