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Depending on the output voltage of your MC cartridge, you may need to adjust DIP switch 5 (G). Up will
set the phono card to 71dB and down will set the gain to 61dB. For most MC cartridges, the higher gain
setting will be necessary to achieve normal listening levels.
Moving Magnet setup.
For MM cartridges, switch 4 of both DIP switches are set to down for ‘on’.
It will be impossible to give suggestions for correct capacitance with any given cartridge, due to the huge
variation in capacitance of turntable cables. The optimal value is selected by listening.
There are three capacitive loading switches with values of 100pF, 220pF and 330pF. These are in addition
to a fixed value of 100pF. You may select any switch or number of switches; the values are additive. The
range of values available is 100pF – 750pF. The correct value is that which gives the best overall tonal
balance. Typically, if the cartridge sounds too bright, then more capacitive loading is required. Set switches
1,2 & 3 of both left and right DIP switches to the same positions when setting the parallel capacitance. For
most MM cartridges, the lower gain of 35dB will be the preferred setting.
Resistive loading for moving magnet is fixed at 47kOhm. If you require something other than 47kOhm,
please contact the OAD factory.
Do not set the preamp so that it enhances one recording only. Listen to a variety of material and adjust
accordingly.
Moving Magnet Parallel Capacitance Settings.
100pF
200pF
320pF
430pF
530pF
420pF
650pF
750pF
MM 330pF 220pF 100pF
G MM 330pF 220pF 100pF
