30 smartMAC user manual
Gobo orientation in the smartMAC
Most gobos must be installed facing in a certain direction in order to avoid heat damage. The orientations
shown in Figure 13 are correct in most cases, but consult your Martin dealer or gobo supplier if you are in
any doubt about the orientation of a specific gobo type.
Coated Glass Gobos
Focus is easiest to maintain if all coated gobos in a fixture are installed with their coatings
as close as possible to the same plane of focus. However, if there is a risk of heat damage
on a gobo, the first priority is normally to ensure that the more reflective side faces towards
the lamp. If in doubt, install coated gobos with the more reflective side towards the lamp, or
consult your Martin dealer or gobo supplier.
More reflective side towards lamp
To minimize the risk of gobo overheating
and damage, turn the more reflective side of
a coated gobo towards the lamp.
Less reflective side away from lamp
The less reflective side of a coated gobo will
absorb less heat if it faces away from the
lamp.
To determine which side of a gobo is coated,
hold an object up to it. On the uncoated side,
there is a space between the object and its
reflection and the edge of the gobo can be
seen when looking through the glass.
Textured Glass Gobos
Smooth side towards lamp Textured side away from lamp
Textured glass gobos in the smartMAC give the best focus results with the smooth side
towards the lamp. If in doubt, consult your Martin dealer or gobo supplier.
Metal Gobos
Reflective side towards lamp Black side away from lamp
Image / text Gobos
True image towards lamp Reversed image away from lamp
Figure 13. Correct gobo orientation
Uncoated side Coated side
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