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compression spring under the head bracket holds it in the set
position. Adjustment can be made by playing a tape recorded
with a 10 kHz tone on a good machine and adjusting for
maximum output measured with an output meter.
For stereo machines, the output of each channel can be fed
to the X and Y inputs of an oscilloscope and a lissajous figure
obtained from the 10 kHz recorded tone. Azimuth is adjusted
for zero phase difference.
If no test equipment is available, play a recording of some
white noise (inter-station hiss on f.m.) made on a good
machine. Adjust azimuth for maximum treble. Swing
adjustment either side of centre and graduall ...