4
The
LOAD
(
i.1 pos.5 and 12
) switch allows you to adjust the input impedance that the
cartridge sees. With all switches OFF the load impedance is 47k ohms. This is suitable for MM
cartridges. MC cartridges generally like to see higher impedance and the manufacturer will
usually state the optimum in the cartridge specifications. However it is best to adjust this by
ear. You can progressively switch the DIP switches ON to increase the impedance. As you do so
the sound will become progressively tighter and cleaner. As you pass the optimum position
the sound will become slow and dull. Therefore you will want to settle on a position where the
cartridge sounds lively but controlled. This will generally be just before it starts to slow down in
perceived sound.
47 kohm 1 000 ohm 400 ohm 200 ohm
100 ohm 50 ohm 30 ohm 20 ohm