Mount Your Speakers - Martin LIGHTING DIRECTOR User Manual

2. Mount your speakers

Mount the four speakers on the corners of the stage by clamping them to trussing,
static props, walls or the ceiling. Make sure the speakers are mounted on static
structures so the frame of reference for tracking does not vary after calibration. Set up
the speakers so they are about the same height above the floor, ideally between 5 and
9 m (16 and 30 feet) high. The speakers should form more or less a square or rectangle
covering the area of the stage that you want to be tracked. The centre of the square or
rectangle defined by the speakers should be approximately on top of the centre of the
stage. Speakers should point to one and a half metres (5 feet) directly over the centre
of the stage and have a free line of sight over the entire area in which tracking is
needed. Objects blocking speakers' lines of sight can degrade system performance,
especially if they are close to the speakers themselves.
We will refer to each speaker by a letter from A to D. Figure 4 shows which speaker
goes where:
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Speaker A
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Stage
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Right
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Speaker D
Figure 4 - Ideal speaker mounting. The dotted line shows the
Speaker A is towards the stage right and upstage (far from the public)
Speaker B is towards the stage left and upstage (far from the public)
Speaker C is towards the stage left and downstage (close to the public)
Speaker D is towards the stage right and downstage (close to the public)
Side note: If it is impossible to have the speakers mounted around the stage, you may place
them in some "alternative" positions. Please refer to chapter 8 "Tips to Optimize System
performance" for a full discussion of other options.
Page 20
Upstage
Downstage
Public
speaker area, which is slightly bigger than the area of
the stage that will be tracked by the MLD
Speaker B
Stage
Left
Speaker C
MLD manual 1.1