sAluT
Thank you for purchasing this Xaoc Devices
product. Katowice is a stereo variable–band
isolator that allows the user to manipulate
a selected range of frequencies. It is the first
module in a series of upcoming Xaoc Devices
products designed specifically for processing
stereo signals.
Katowice splits the stereo input signal into
three bands: low, middle, and high. While
the knobs and CV inputs define the center
frequency and bandwidth of the mid band,
the low and high bands are automatical-
ly adjusted so that the sum of all three is a
complete signal. All three bands are passed
through high quality VCAs and their stereo
outputs are available separately for further
processing. A stereo mixdown signal is also
available.
Katowice may be used as a crossover net-
work, a parametric EQ, DJ-style kill filter, or
other band-selective applications, including
multiband compression and stereo enhance-
ment.
InsTAllATIOn
The module requires 10hp worth of free
space in the Eurorack cabinet. The rib-
bon-type power cable must be plugged into
the bus board, paying close attention to po-
larity orientation. The red stripe indicates
the –12V rail and should point in the same
direction on both the bus board and the unit.
The module itself is secured against reversed
power connection, however, reversing the
16-pin header
may cause serious damage
to other components of your system because
it will short-circuit the +12V and +5V power
rails.
The module should be fastened by mounting
the supplied screws before powering up. To
better understand the device, we strongly
advise the user to read through the entire
manual before using the module.
mOdulE OVErVIEW
The front panel of Katowice is shown in fig. 1.
The stereo pair of signal inputs
1
is
AC-coupled and accepts all Eurorack signal
levels (up to 20Vpp), however, a conservative
10Vpp level is recommended, because filter-
ing certain signals may occasionally result
in increased amplitude and cause distortion.
The configuration of bands is controlled by
the position of the two knobs: mid freq
2
sets the geometric center of the middle band
(in Hz), and mid width
3
sets the width of
this band (in octaves). The corresponding
two jacks
4
and
5
allow for voltage control
and accept voltages in ±5V range. The ampli-
tude of the middle band is controlled by the
central mid slider
6
and the corresponding
CV input above
7
that accepts voltages in
the range of ±8V. The left low slider
8
and
CV input
9
control the amplitude of low fre-
2
module
explained
