VINCENT PHO-701 Manuel D'utilisation page 29

CONFIGURATION
Configuration for use with MM- and MC-pickup-systems
There are two different kinds of pickup systems on the market, the so called MM (Moving Magnet) and
MC (Moving Coil) systems. Having a MM system, a magnet attached to the pickup system moves inside
a MM system, a magnet attached to the pickup system moves inside a coil and a voltage proportional to
the vibration amplitude is induced. On the other hand, when you have a MC system the coil is wrapped
around the needle and the magnets are arranged around the coil. As the coils used in MM systems have
to be rather small to save weight, a higher output voltage is needed. While MM systems usually deploy
a voltage of several mVolts, most MC systems only use 100 µV. Now adays you often find mixed types
as well, they are called high-output MC systems and have a voltage of up to 2.5 mV.
Due to the better sampling resolution today most high quality turnta bles make use of the MC system.
However, there are still some very sophisticated MM systems available.
The PHO-701 was designed to handle both systems without any loss in quality. To handle the differences
between them (MC: higher ampli fication, adjusted by resistors MM: adjusted by capacitors) there are
four adjustment units on the bottom of the appliance (two for each channel – on the left: left channel, on
the right: right channel):
7
R
Vincent
29