Apple Logic 7 - Manual (Page 15)

Chapter
1
Control
Surface
Setup 15
The
use
of
multiple
control
surfaces
expands
on
the
number
of
tracks,
parameters,
and
so
on
that
can
be
controlled
with
individual
faders,
knobs,
and
switches.
As
an
example,
the
Logic/Mackie
Control
XT
units
are
basically
identical
to
the
channel
strip
section
(fader,
V-Pot,
and
LCD)
of
the
main
Logic/Mackie
Control
unit.
The
Mackie
C4
features
a
number
of
V-Pots,
but
no
faders.
You
may
add
as
many
XT,
C4,
or
other
control
surface
units
as
you
wish
to
your
Logic
system,
provided
enough
MIDI
in
and
out
ports
are
available.
Connecting
the
Unit(s)
Connect
your
(MIDI)
control
surfaces
as
shown
in
the
diagram
below.
As
mentioned
earlier,
each
MIDI
control
surface
must
have
a
discrete
MIDI
in
and
MIDI
out
connection.
Do
not
“daisy-chain”
other
MIDI
devices
via
MIDI
thru
to
the
MIDI
in
or
out
ports
used
by
control
surfaces,
as
this
may
result
in
data
errors.
FireWire
and
USB
units
are
connected
via
a
single
cable
to
the
computer.
It
is
generally
recommended
that
this
is
a
direct
connection
with
the
Macintosh,
rather
than
via
a
FireWire/USB
hub.
Daisy-chaining
or
the
use
of
hubs
can
result
in
data
errors.
Optional
Footswitches
and
Pedals
If
your
control
surface
features
suitable
connectors,
you
may
use
optional
foot
switches
to
remotely
control
start/stop
and
other
functions.
This
may
be
useful
when
using
guitars
or
other
instruments
that
require
two-handed
playing.
Computer MIDI
Interface
Optional
Footswitches