User manual
SALUT
Thank you for purchasing this Xaoc Devices
product. Zagrzeb is a stereo multi-
mode 4-pole (24dB/oct) state variable volt-
distinct frequency responses, three of which are
available simultaneously. Zagrzeb is designed
to sound smooth and clean unless it is overdriv-
en with a hot signal—however, it does not lack
character! We believe it will be appreciated by
fans of old Japanese synthesizers but bear in
mind that Zagrzeb is not a clone of any existing
design. The four-pole state variable structure
is a new development and offers unique sonic
characteristics. While Zagrzeb is designed for
oscillators like Xaoc Odessa), it can easily han-
dle mono signals and is capable of creating a
faux stereo pair thanks to a special phase shift-
ing network at the input.
INSTALLATION
The module requires 8hp worth of free space in
the Eurorack cabinet. Always turn the power
off before plugging the module to the bus board
using the supplied ribbon cable paying close at-
tention to power cable pinout and orientation.
The red stripe indicates the negative rail and
should match the dot or –12V mark on the bus
board as well as the unit. Zagrzeb is internally
secured against reversed power connection,
may cause
serious damage to other components of your
system, because it will short circuit the +12V
and +5V power lines. Always pay particularly
close attention to the proper orientation of
your ribbon cable on both sides! 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 man-
ual before use.
MODULE OVERVIEW
stereo pair of left/mono and right signal
inputs
1
is AC-coupled and accepts all Eu-
rorack signal levels (up to 20Vpp), however, a
conservative 10Vpp level is recommended as
increased amplitude thus causing distortion.
With a mono signal patched into the left/
mono jack the module automatically creates
a stereo signal. The three pairs of jacks below
the inputs are the high pass 24
2
, band
pass
3
, and low pass 24
4
outputs of
bp config switch
5
near the
band pass outputs offers three variants of this
middle type of response. The big cutoff freq
knob below
6
controls the cutoff frequency of
resonance slider
7
controls the degree of
resonance. The illuminated slider shaft indi-
cates how much the peaks of the output signal
exceed the peaks of the input signal (mostly
due to the resonant ringing around the cut-
off frequency). The fm 1
8
and fm 2
9
CV
inputs at the bottom of the panel control the
cutoff frequency. The sensitivity of the fm 1
input is controlled by the small attenuverter
knob
10
from –2 oct/V through 0 to +2 oct/V.
The fm 2-
ed). The spread CV input
11
allows the user
to animate the stereo image by moving the left
directions.
FREQUENCY RESPONSE
-
offer –12dB/oct low pass, +6/–6dB band pass,
and +12dB/oct high pass responses. Zagrzeb’s
4-pole structure gives the user as many as
low pass up to +24dB/oct high pass with all
three possible combinations of 6dB/oct slopes
that sum up to 24 in between. These interme-
2
module
explained