This was a requirement of the design because it places the tracking error all in one direction, whereas conventional arms' tracking error varies in both directions from their two null points.Īnother new invention in the Garrard Zero 100 was the magnetic antiskating system. Also, unlike the earlier efforts at similar designs, the Zero 100's tonearm is designed SHORTER than a conventional arm, so as to have no overhang (the distance the stylus would extend past the spindle, were the arm to be placed there). It doesn't, and that is what is clever and different about it: it rotates in counter-synchronism with the tracking error generated by its curved path across the record, nulling out that error. Some have thought that the Zero 100 headshell rotates such that it always remains in the same position, like a parallelogram. Illustrations showing the similarities and differences among the three designs are provided below. In the USA, it was found to be similar to prior Patent 2983517 and a patent was not granted. This difference was sufficient so that Garrard was issued patents on its design in Europe and in Canada. Most commentary attributed this to improvements in bearing technology, but there was a significant difference in the geometry.the location of the auxiliary arm and the pivots.īoth the B-J and Garrard solutions were in the form of a tetragon (four-sided shape) but there was a fundamental difference in that the B-J placed its stylus tip midway between two pivot points the Garrard placed it directly under the main headshell pivot point. The idea wasn't new (the from the 1950s used the same idea), but the execution differed from early attempts. This was done with a headshell that pivoted, the pivoting controlled by an auxiliary arm attached to the headshell and to a fixed point near the tonearm's main pivot. Its most obvious advance was its tonearm, designed to adjust its offset angle as it played across the record. It was based on the "large chassis B" models like the SL95B. Garrard tackled the issue of tracking error with their famous Zero 100 automatic turntable. Zero Tracking Error: the Garrard Zero 100
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