KNOBI is multi-tool able to mix, attenuate, invert, display and multiply any kind of signal. a
• To combine distinct cv sources into one and attenuate / invert the resulting signal.
• To display the value of any voltage within your modular system.
• To output a fixed and thermally stable 5-volt reference.
• To combine all the functions above for the ultimate and audio mangler. CV
• Sequences – alter them into the oblivion.
• Drums – usa the dedicated 5-volt manual gate as a trigger.
• Audio and CV simultaneously use the range switch to stretch complex waveforms and sweeps. –
• Unknown signals – read the built in 3 digits meter to interpret their value and act accordingly.
Knobi can serve a wide range of purposes –not only to pass butter - and this is true thanks to its internal
signal path that makes use of some of the most useful building blocks of analog synthesis: a 4-channel mixer,
a three-range offset, an attenuverter, a fixed manual gate and lastly a cascading multiple derived from the
a b c d, , and are Knobi’s inputs while r is a fixed 5v reference output. The toggle switch next to sets the d
range of the offset the big knob below the meter. Connect a signal into one of the inputs to visualize its –
voltage value in the three digits meter. Keep in mind that this reading happens post offset and
attenuverter – the smaller knob with (-) and (+) indications.
The pushbutton next to adds a gate of 5v to the mix: with no input connected it will act as a manual gate x4
outpu Autopatch thet. r reference output into one of the inputs to use Knobi as a macro controller thanks
the offset knob and switch to set the range and the attenuverter.
x1, x2, x3 and x4 are all cascading copies of the final signal path. Plugging a cable will break the normalization
and the multiplication will reset starting from the next output. Four cables plugged in will output a copy
at the same factor x1 - unity gain – making Knobi a versatile buffered multiple.
• Thermal compensated 5v voltage source with dedicated output.
• Four channel mixer with four buffered output.
• Built in 3 digits voltage meter post mix / attenuation / inversion.
• Offset with a dedicated three positions range toggle.
• Manual gate button tied to the mix.
• 4 cascading outputs in an open design configuration.
• Unique signal path: mix – attenuate invert add visualize multiplicate. – – – –
• “Whatever” power connector a.k.a. don’t mind the polarity.
• dimensions width 6HP, depth mm. 25
• current draw +12V 50ma, -12V 30ma
Demos and build documentation at jolin.tech/knobi
