9
Use and adjustments:
Platter rotation:
Ensure that the red LED lights up when switched on. Rotate the brass knob so that the red
dot matches the chosen speed.
Speed selection:
Select speed by rotation of the brass knob on the PS front panel. For 'on' the red LED
shows, for 33 rpm the green LED and for 45 rpm the orange LED. The power supply can be
left permanently switched on.
Fine Speed adjustment:
Fine speed change can be made by carefully rotating the small dial on the top of the PS with
a screwdriver. On the dial is an arrow which, when pointing to the small red dot nearby,
indicates precise 50 Hz output.
Turning the dial in a clockwise direction from the red dot lowers the speed (a total of 8 steps)
and in a counterclockwise direction the speed is increased, again for 8 steps in 0.05%
increments.
Clamp:
The clamp can be used without washers. Gently screw down the clamp on top of the record.
Put a washer under the LP (thin for thick records and thick for thin records) and start
screwing the clamp down. Observe the outer edge of the LP. To start with, this edge will be
above the mat but will slowly lower to touch the mat. With fingers hold the LP so that it
does not rotate. If the clamp is further screwed, the outer edge will rise. Pressure should then
be released by slightly unscrewing the clamp until the outer edge is touching the mat again.
This is the position in which the record is held in firmest contact with the mat.
With practise there is no need to stop spinning the platter while changing LPs or using the
clamp.
VTA change:
Rotation of the toothed knob at the base of tonearm tower raises and lowers the top part of the
tonearm tower (seen from the top, counterclockwise rotation raises VTA). Adjustments can
be in repeatable increments below 0.01 mm. Rigid construction allows for this to be done
while records are playing, without changing azimuth. For more details see the sections on
tonearm tower and VTA clock.