SALut
Thank you for purchasing this Xaoc Devices
product. Koszalin is a stereo frequency shift-
er (2 ins/4 outs) offering both quasi-expo-
nential and linear frequency modulation as
well as full stereo feedback under voltage
control. Frequency shifting results in a linear
translation of the signal spectrum, which
produces a variety of atonal sounds. It should
not be confused with frequency scaling, also
known as pitch shifting. Complex phase can-
cellation patterns occurring with frequency
shifting and deep feedback produce spectac-
ular barber-pole effects.
Koszalin offers direct controls over feedback
amount, feedback routing, and feedback re-
sponse. It also facilitates frequency modula-
tion of any stereo audio signal, thanks to the
linear TZFM input. Koszalin is a digital mod-
ule with a DSP behind an analog interface.
INStALLAtION
The module requires 10hp worth of free space
in the Eurorack cabinet. Always turn the
power off before plugging the module into
the bus board using the supplied 16-pin/16-
pin ribbon cable, paying close attention to
power cable pinout and orientation. The red
stripe indicates the negative rail and should
match the –12v mark on the bus board and
the unit. Koszalin is internally secured against
reversed power connection; however, flip-
ping the 16-pin header
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 at-
tention to the proper orientation of your rib-
bon cable on both sides!
The module should be fastened by mounting
the supplied screws before powering up. To
better understand the device and avoid com-
mon pitfalls, we strongly advise the user to
read through the entire manual before use.
mOduLe OVerVIeW
The front panel of Koszalin (fig. 1) features a
shift knob
1
used for setting the amount
of frequency shifting applied to the input
signal (in Hz). The response of this knob is
bent exponentially in both directions from
the center of the scale (which indicates 0Hz).
In other words, the scale is stretched propor-
tionally around zero, which facilitates great-
er precision in setting a low shift amount.
Three ranges are set with the range switch
2
: X1 (-50Hz to +50Hz), X10 (-500Hz to
+500Hz), and X100 (-5kHz to +5kHz). Ste-
reo input signals should be patched into the
pair of input jacks
3
. The input indica-
tor
4
shows the volume of the input using
light intensity and color, gradually changing
from green to yellow and red when the sum
exceeds 16Vpp.
Two pairs of stereo outputs are available for
independent access to the signal being shifted
up
5
(towards higher frequencies), as well as
shifted down
6
(towards lower frequencies,
including and beyond 0Hz; more on that be-
2
module
explained
