Hello and thank you for using the Shaka-8 Voltage-Controlled Stereo Matrix Mixer and Shaka-4 Stereo
Matrix Expander for Eurorack. We hope you will find it to be a joy to explore.
The Shaka-8 is a Stereo Matrix Mixer with an all-analog signal path, meant for use with Audio signals.
While it is similar in function to other Stereo Matrix Mixers, the Shaka-8 allows for voltage control over
each matrix patch point, i.e. the send level of each L/R pair of inputs to each L/R pair of outputs.
In addition to the 4 input and 2 output channels on the Shaka-8, the Matrix may be expanded to a 4x3,
4x4 or more matrix mixer by chaining Shaka-4 Stereo Matrix Expanders to the main unit via the 12-pin
connector labeled “EXPANDER” on the back of the Shaka-8.
Shaka-8 Technical Specifications (Eurorack standard)
Width: 12hp
Depth: 25mm
Peak Current Draw: 60mA @ +12V, 60mA @ -12V
Control voltage range: 0-8V p-p (-100dB to Unity Gain); 0-10V p-p (-100dB to +20dB)
Exponential/audio taper control voltage response
Input Impedance (All Inputs): 100kΩ
Output Impedance: 1kΩ
AC-Coupled Input Cutoff Frequency (-3dB High Pass): 5 Hz approx.
Shaka-4 Technical Specifications (Eurorack standard)
Width: 6hp
Depth: 25mm
Peak Current Draw: 25mA @ +12V, 25mA @ -12V
Note: due to current draw and signal integrity considerations, we do not recommend using more than 5
Shaka-4 modules per main Shaka-8 module.
1. Connecting your Shaka-8 and Shaka-4
To power the main Shaka-8 unit, connect a standard 2.54mm pitch 10-to-16 pin ribbon power cable to the
header at the top of the Shaka-8 pcb. The -12V/red stripe side of the connector must be aligned with
white stripe silkscreen indicator labeled “-12V” for proper use. This module is reverse diode protected, but
it is still not recommended that you plug it in backwards to see what happens. Do not attempt to connect
or disconnect the power cable or any expander cables while your modular power supply is turned on.
To connect a Shaka-4 to the back of a Shaka-8, attach the 2mm pitch 12-pin ribbon cable provided with
the Shaka-4 to both the header on the Shaka-8 labeled “EXPANDER” and to either of the two headers on
the back of the Shaka-4 labeled “EXPANDER I/O”. Make sure that the red stripe on this ribbon cable
matches the stripe orientation on both modules.
To connect additional Shaka-4 units, simply attach another 2mm, 12 pin ribbon cable to the unused
“EXPANDER I/O” header on the first Shaka-4, and to either “EXPANDER I/O” header on the back of the
last Shaka-4 module in the chain. Multiple Shaka-4 units may be attached this way to provide extra output
channels and matrix points for the Shaka-8.
