Intellijel Quadra + Expander - Manual

Intellijel
Quadra
Manual
Version
1
Page
|
1
The
Intellijel
Quadra
and
Expander
module
comprises
four
parallel
function
generators
(more
commonly
referred
to
as
“Envelope
Generators”.
The
Quadra
function
generators
have
three
modes,
AD
(Attack
Decay),
ASR
(Attack
Sustain
Release)
and
Cycle
(perpetually
repeating
AR
envelope
or
unipolar
LFO).
Each
function
can
be
configured
to
have
a
linear
or
exponential
curve
and
they
feature
a
wide
time
base
control
from
0.5ms
to
over
30
seconds.
The
Expander
enhances
the
core
functionality
by
allowing
attenuated
voltage
control
over
Attack
and
Decay
for
each
function
generator
as
well
as
a
Quadrature
mode
and
a
analog
OR
mixer
for
each
function
generator
pair
(1-­‐2,
3-­‐4).
This
manual
will
cover
both
the
Quadra
and
its
optional
Expander
module.
Quadra
Front
Panel
1-­‐
ATTACK
–
These
knobs
control
the
time
of
the
Attack
portion
of
the
function
(rising
from
0
to
the
maximum
level).
Slower
times
will
create
a
fade
in
effect
while
faster
times
are
used
for
snappy
percussive
sounds.
2-­‐
DECAY-­‐
These
knobs
control
the
fall
to
zero
time.
If
in
ASR
mode
this
will
act
as
the
Release
time.
In
Cycle
mode
the
total
time
of
Attack
and
Decay
set
the
frequency
of
the
LFO.
3-­‐
Exponential/Linear
switch.
This
will
change
the
shape
of
the
Attack
and
Decay
sections.
This
setting
will
alter
the
time
base
of
the
function
generator.
Depending
on
what
you
are
patching
the
Quadra
into
this
setting
may
need
to
be
changed.
For
example
if
patching
into
an
exponential
VCA
you
should
use
Linear
mode.
The
fastest
envelope
times
are
achieved
when
in
linear
mode.
4-­‐
Mode
switch.
Selects
AD,
ASR
or
Cycle
mode.
AD
is
an
envelope
that
ignores
the
incoming
gate
time
and
is
simply
triggered.
This
is
often
used
with
sequencers.
ASR
is
similar
to
an
ADSR
in
that
it
continues
to
sustain
while
the
input
gate
is
high
and
Cycle
mode
is
like
a
LFO.
5-­‐
LED
–
shows
the
state
of
the
function
generator
amplitude.
6-­‐
TRIG
Inputs
-­‐
Patch
trigger
or
gate
signals
here
to
control
the
function
generators.
7-­‐
ENV
Outputs
–
The
function
generator
is
output
here
as
a
uniplolar
0-­‐8v
control
signal.