ALM MCF x2 -030 Manual

ALM Ikke kategoriseret MCF x2 -030

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The MCFx2 is our state variable ‘MCF’ filter made double. It features 2 identical classic analog 3 pole state variable filter cores each with Low,
High and Band Pass (or Notch) outputs. Direct and voltage control is provided for both filter cut offs and resonance. Switches allow the filters
to function as one, with the ‘Feed’ switch internally routing audio from one filter to the other in series and the ‘Link’ switch linking the cut off
controls for both filter cores. MCFx2 expands on the great sounding MCF filter to offer both serial and parallel functionality for stereo opera-
tion, dual peak, tighter slopes and other complex filtering set ups.
RESONANCE CONTROL
Sets the level of resonant peaks
atop the cut off frequencies. The
resonance can get particularly
aggressive going into self oscillation
with the control past 12 o’clock.
RES INPUTS AND ATTENUATORS
Attenuated control voltage inputs here are com-
bined with knob offsets to set the final resonance.
Expects approx. -5V - 5V input.
FREQUENCY CONTROLS
Sets the base frequency for the filter
cut offs. The v/oct and frequency
inputs are added to these.
FREQ INPUTS AND ATTENUATORS
Control voltage inputs here are combined with
knob offsets to set the final cut off. Attenuversion
control allows for both attenuation and inversion
of the CV. Expects approx. -5V - 5V input.
V/OCT INPUTS
Additonal cut off frequency control
inputs. Cut off frequency approx
doubles for every input volt. Allows
for key tracking and use as sine
oscillator when filter self oscillates.
LINK BUTTON
Links the left cut off to parallel control both fil-
ters. The right controls will now set the max range
of the right core. Both filters will track together
when the right cut off is fully clockwise.
FEED BUTTON
Routes the output of the left filter core to the in-
put of the right (unless patched), with the desired
output filter type selected via jumper at the rear
of the module.
AUDIO INPUT ‘In’
Signal inputs to the filter cores for processing.
Input sources may need to be attenuated, filter
will drive from hotter input levels.
The Left input is normalised to the right (unless
‘Feed’ is enabled).
OUTPUTS
Each filter output is 3 pole with an
18dB/oct slope.
Low - low pass filter outputs. Passes
frequencies below the cut off.
High - high pass filter outputs. Pass-
es frequencies above the cut off.
BP/Notch - band pass notch filter or
outputs. Jumpers on the rear of the
module select one or the other for
each filter.
Passes frequencies within (BP) or
outside (Notch) a narrow region
around cut off frequency.
http://busycircuits.com/alm030
TECHNICAL SPECIFICATIONS
Power: +12V 85ma / -12V 85ma
Size: 14HP
Depth: 32mm
ALM030 / MCFx2
Limited Warranty
From the date of manufacture this
device is guaranteed for a period of 2
years against any manufacturing or
material defects. Any such defects
will be repaired or replaced at the
discretion of ALM. This does not
apply to;
•Physical damage arising from mis
treating (i.e dropping, submerging,
‘modding’ etc).
•Damage caused by incorrect power
connections.
•Overexposure to heat or direct
sunlight.
•Damage caused by inappropriate or
misuse.
•Use of incorrect or non official
firmware
No responsibility is implied or
accepted for harm to person or
apparatus caused through operation
of this product. By using this product
you agree to these terms.
Support
Need help? Email your questions to
help@busycircuits.com
For the latest news, additional info,
downloads and firmware updates
please visit the ALM website at
http://busycircuits.com and follow
@busycircuits on Twitter and Insta-
gram.
Module Installation
With your modular synth
powered , connect the 10 pin off
end of the supplied standard
eurorack power connector cable
to the 10 pin power connector on
the rear of the module.
The red stripe on the cable
should be orientated to match
the text ‘RED’ marked on the
rear of the module near the
power connector (this is -12V).
Connect the other 16 pin end of
the cable to your eurorack bus
board (Refer to your bus board
documentation for the correct
orientation).
You are now safe to power
up your modular synth. If the
module fails to power up, check
that you have the power cable
correctly orientated and have
carefully read the manual.
V/OCT Tracking Calibration
Calibration is performed by carefully
adjusting the trimmers on the back
of the module. Apply 1V to V/Oct in-
put, and tune the self oscillating filter
via front panel controls to C1. Next,
change the input voltage to 3V and
then adjust trimmer on reverse until
you get C3. You may need to go back
and forth and repeat the process a
couple of times for best results.
You should expect good tracking over
at least 2 octaves. Note the module
ships pre-calibrated.
ALM030 manual version: 0.1
High Notch Band Low
Resonant
Peak
Cut Off Cut Off
Link→
Feed→
LP
HP
BP
N
InBP

Produkt Specifikationer

Mærke: ALM
Kategori: Ikke kategoriseret
Model: MCF x2 -030

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