Manual

9
BASICS – Link Mode & External Sidechain
Link Mode
In link mode, both channels of the mpressor can be coupled and operated with the controllers and
switches of the left control panel. Please consider the following notes:
Both sides of the mpressor utilize exactly identical electronic modules that could even be inter-
changed with each other in principle. This grants a high equality of signal processing in the left
and right channel, which is especially important in stereo mode. Another result is the excellent
isolation of both channels from each other, and the audio quality will not decline because there
are no lossy to and fro signal routings in the circuitry.
Note: As an eect of this design approach, only the control functions of the compressor (marked
green in the gure) are combined in link mode. The left control panel becomes the master, that is
the settings for the left channel are transferred to the right channel – therefore the settings of the
particular controllers on the right side are not relevant in link mode.
Note: At the same time this means that the audio functions of the compressor (marked orange) are
not combined. In practice you have to pay attention to set the controllers and switches for both
EQ and gain sections identically. Otherwise an audible drift between the left and the right channel
might occur.
External Sidechain
If the SC Extern switch is active, compression will not be controlled by the signals from the regular
audio inputs anymore, but by dierent audio signals which are fed into the additional sidechain
input connectors.
If a duplicate of the input signal is processed with an equalizer and then fed into the sidechain
input, for example, the result will be frequency-dependent compression. Another example is to
send the bass drum of a drum machine into the sidechain input in order to achieve nice groovy
compression that is pumping in time with the music.
The external sidechain inputs are equipped with a high pass lter that has its cut-o frequency
at 80 Hz with a slew rate of 6 dB per octave. This has been done in order to reduce the inuence
of the low frequencies on overall compression by a certain amount in order to keep the eect as
balanced as possible.
Threshold
Attack
Release
Ratio
EQ Gain
EQ Freq GR Limit Gain
EQ Gain
EQ Freq
GR Limit
Gain
Threshold Attack Release Ratio
On x10 On
SC Extern Auto Fast Anti Log
SC Extern
Auto Fast
Anti Log
On x10
On
Left
Right
Link