Specifications

M44 and M86 Multisonic Imager Operation Manual
M44 and M86 Quick Start Instructions
1.
If possible save the box, packing, and
your Authorized Dealer sales receipt,
which validates the warranty period if it
starts later than the date of manufacture.
For units without this documentation, the
three-year warranty starts at the last day
of the month of manufacture as indicated
by the serial number.
2.
For intended operation, three
loudspeakers are needed. They are
placed at left, center, and right. If possible
the center loudspeaker should be set
back a little so that the three are
equidistant from a point on the centerline
and toward or at the back of the listening
area.
Each of the loudspeakers should be
aimed for optimum audience coverage.
Usually this is horizontally toward the
center of the audience, and vertically
toward the most distant listeners.
3.
When used with a stereo mix, the
Multisonic Imager is normally connected
into the signal path just ahead of the
amplifiers, active crossovers, and
protective limiters. It should be the last
unit in the signal path before the
loudspeaker-specific processing.
4.
Generally the loudspeakers and amplifier
gains of left, center, and right are to be
matched. An unmatched center
loudspeaker can be accommodated also;
in this case the gain setting may be
different. The setup function allows quick,
precise gain adjustment.
5.
Use the Setup function to adjust the
amplifier gains:
A.
Start with all output level controls on
the M44/M86 at center position.
B.
Operate the system with a stereo or
discrete center input signal.
C.
Press the L/C Setup switch. Adjust
the left or center power amplifier gain
control for a phantom sound source
exactly midway between the left and
center loudspeakers. Release the
L/C Setup switch.
D.
Press the C/R Setup switch. Adjust
the right amplifier gain for a phantom
sound source exactly midway
between the right and center
loudspeakers. Release the C/R
Setup switch. Setup is complete.
6.
To adjust the derived surround level (M86
only) using a stereo source:
A.
Set the Surround Output Level to mid
position or appropriate set point.
B.
Set the C/S Image Balance control to
full clockwise.
C.
Adjust the Stereo Input (derived)
Surround control so that the surround
loudspeakers sound equal to or
slightly louder than the front, when
listening in the center of the listening
area.
D.
Restore the C/S Image Balance
control to center.