Mutable Instruments Veils User manual

About Veils
VCAs are the cornerstones of modular patches: shaping
the amplitude of a sound with an envelope, animating a
mixture of several oscillators, adjusting the amount of
filter modulation with a random source or touch plates,
controlling the amount of FM applied on an oscillator...
are all possible uses of these super versatile building
blocks.
Veils provides four VCAs with an adjustable response
curve and an offset control. Their outputs are dai-
sy-chained, allowing adjacent groups of 2, 3, or all 4
channels, to be mixed together.
Veils requires a -12V / +12V power supply (2x5 pin
connector). The red stripe of the ribbon cable (-12V side)
must be oriented on the same side as the “Red stripe”
marking on the board. The module draws 50mA from the
-12V rail and 50mA from the +12V rail. Current con-
sumption can reach 70mA on either rail depending on
the color and brightness of the LEDs.
Online manual and help
The full manual can be found online at
mutable-instruments.net/modules/veils/manual
For help and discussions, head to
mutable-instruments.net/forum
Veils
Quad VCA
Please refer to the online manual for detailed infor-
mation regarding compliance with EMC directives

A. Response curve, continuously variable between
exponential and linear. Very high gains (up to +30dB) can
be achieved with an exponential response curve. Beware
of clipping!
B. Offset control. This control adds a positive offset to
the CV signal, for example to obtain a unipolar modula-
tion from a bipolar LFO.
C. Gain CV amount. Amount of gain (amplitude) modu-
lation from the CV input (2), or direct gain control when
no cable is patched into the CV input. When set to the
maximum, a CV of +5V yields a gain of 1, and a CV above
+5V might cause distortion.
1. Gain indicator LED. Its brightness is proportional to
the VCA gain, on a dB scale. The LED is off when the
signal is muted.
2. Gain CV input. Normalized to a constant +8V.
3. DC-coupled signal input. Accepts audio or CV signals.
4. Output indicator LED. Its brightness represents signal
level, and its color represents signal polarity (green =
positive).
5. Signal output. When no patch cable is plugged into an
output, the signal from this channel is routed to the next
channel. For example, when no patch cable is patched
into output 1, output 2 will contain the sum of channel 2
and channel 1. If nothing is patched into outputs 1, 2 and
3, output 4 will contain the sum of all four channels.
B
C
1
4
2
3
A
5