User Manual

DF330 OPERATOR’S MANUAL
6
In Auto mode, the Threshold control is set so that the filter closes
fully when only noise is present. i.e. tape hiss between tracks and
so on. Above this level, the filter frequency is determined by the
spectral content of the input signal and is essentially independent
of level.
In/Out
Allows the filter to be switched in or out of circuit independently of
the expander. When switched out, the filter is forced open but the
display is disabled.
A nine segment LED display dynamically shows the filter
frequency.
Bypass
Enables the output of the DF330 to be compared with the original
input signal. Although individual In/Out switches are provided for
both expanders and filters, doing an A-B comparison in stereo
would involve the operating of four switches.
LINKING
Stereo Link
Causes both channels to track identically so that a stereo signal
may be processed without introducing unnatural image shifts. In
this mode, the left and right channel control settings will be
averaged in the expander and peak linked in the filter, so it is best
to set both channels to the same settings to avoid confusion. This
also applies to the in/out switches. A LED indicates Stereo Linking
on.