Mutable Instruments Shelves - Manual (Page 2)

Front panel
Controls
A. High-shelf section. This section boosts or attenuates
all frequencies above the FREQ control. The GAIN poten-
tiometer controls the amount of attenuation or boosting.
No modification is applied when GAIN is in its central
position.
B. Parametric sections 1&2. These two sections boost
or attenuate all frequencies in a frequency band whose
central frequency is set by FREQ. The narrowness of this
frequency band is set by the Q setting - from very wide to
very selective.
C. Low-shelf section. This section boosts or attenuates
all frequencies below the FREQ control. The GAIN poten-
tiometer controls the amount of attenuation or boosting.
Inputs and Outputs
1. 2. Global frequency and gain CV inputs. These CV
inputs simultaneously shift the FREQ or GAIN of all four
sections.
3. IN. Audio input.
4. Output clipping indicator. It is recommended to re-
duce the level of the input signal - or to reduce the gain
on all sections - when this LED lights up.
5. OUT. Audio output.
About Shelves
Shelves is a voltage-controlled signal processor altering
the spectrum of audio signals, inspired by the EQ section
of console channel strips.
Just like many sought-after equalizers, it provides
low-shelf, high-shelf, and two parametric tone controls.
Unlike those found in an equalizer, each of these four
sections can be swept over the entire audio range; and
their parameters can be freely modulated with control
voltages.
Installation
Shelves 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 power consumption is as follows:
-12V: 75mA ; +12V: 75mA.
Online manual and help
The full manual can be found online at
mutable-instruments.net/modules/shelves/manual
For help and discussions, head to
mutable-instruments.net/forum
Ranges and scales
On all sections, the FREQ knob spans the entire audio
range, from 20 Hz to 20 kHz.
The FREQ CV input has a 1V/Oct scale and acts as an
offset to the value set by the FREQ knob.
The GAIN knob covers an attenuation/boost range of
-15dB to +15dB.
The GAIN CV input has a 3dB/V scale and acts as an
offset to the value set by the GAIN knob.
Gains above +15dB cannot be reached, even by adding a
positive CV offset to the GAIN CV input. However, gains
below -15dB can be obtained by adding a negative CV
offset to this CV input.
On the two parametric sections, the Q parameter, which
controls filter selectivity, goes from 0.5 to 1000.0.
A
B
1 2 3 4 5
C