5
M1 CONNECTIONS
The M1 should be connected immediately preceding the power amplifier(s)
and after any such devices as preamps, mixing desks or other equalisers.
Input connections, which are balanced, are via combination XLR type
sockets and TRS (tip/ring/sleeve) "stereo" jack sockets, wired as follows:
Pin 1 / jack sleeve
=
Signal 0V
Pin 2 / jack tip
=
(hot)
Pin 3 / jack ring
=
Signal -(cold)
If driving the M1 from an unbalanced source, mono jack plugs may be
used. Under some conditions, this may result in a hum loop. If so,
alternative connections, via an XLR type plug or a TRS jack should be
used, wired as follows.
Pin 1 / jack sleeve
=
Not connected
Pin 2 / jack tip
=
Cable inner (signal)
Pin 3 / jack ring
=
Cable screen (ground)
M1 outputs are pseudo balanced on stereo jack sockets.
Pin 1 / jack sleeve
=
Signal 0V
Pin 2 / jack tip
=
(hot)
Pin 3 / jack ring
=
Signal - (cold)
6
M1 OPERATION
The M1 is a 2-channel system controller which is recommended for use
with the Martin Audio ICT300 compact loudspeaker system used either full-
range or with additional sub-bass.
When using an ICT300 on its own, set the mode switch on the rear of the
M1 to full-range. If additional bass enclosures are used, set the mode
switch to sub-bass and drive the bass amplifiers from the sub-bass output
jack. In this mode, the M1 functions as a 120Hz electronic crossover with a
single mono bass output. If the bass amplifiers do not have "input link"
sockets or switches, it may be necessary to make up a "one into two" jack
lead to parallel the amplifier inputs when using more than one amplifier
channel to drive bass enclosures.
Martin Audio – M1 and ICT300
E
NGLISH
5
CONTENTS
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GUIDES
