Beam Angles; Motorized Barndoors; Aperture Adjustment - Martin MAC 2000 Wash XB User Manual

Beam angles

The following tables list the beam angles available with the standard 50 mm (2 in) aperture ring fitted. Note
that narrower beam angles can be achieved by fitting smaller aperture rings. Hypermode provides a high
intensity, extra narrow spot with no diffusion. To engage hypermode, set the zoom channel to 100%.
Narrow (PC lens)
Hypermode
Zoom minimum
Zoom maximum
Medium (standard Fresnel lens)
Hypermode
Zoom minimum
Zoom maximum
Very wide (Super wide, multi-array lens)
Hypermode
Zoom minimum
Zoom maximum
A micro-Fresnel lens available separately as an accessory (P/N 91610092) gives a very narrow,
concentrated and sharply defined beam with the following angles:
Very narrow (micro-Fresnel lens)
Hypermode
Zoom minimum
Zoom maximum
For information about changing the lens see "Changing the front lens" on page 22.

Motorized barndoors

A motorized barndoor system that attaches to the front of the fixture is available as a separately orderable
accessory. These barndoors can be rotated, or opened and closed using DMX control signals. Effective
beam cut-off using the barndoor system is achieved only with the supplied 65 degree lens, or the super
wide angle lens supplied with the MAC 2000 Wash.
Five DMX channels are allocated for barndoor control irrespective of whether or not they are connected to
the fixture. We have done this to cover the possibility that you rig and begin programming your MAC 2000
Wash XB and add barndoors to it later. If the DMX channels were not already assigned, you would have to
re-patch your console and therefore would lose any programming already completed.

Aperture adjustment

A 50 mm (2 in) aperture is fitted as standard in the optical path of the fixture just behind the zoom lens. This
works well with the standard Fresnel lens.
Inside the head of the fixture, three additional aperture rings are secured to the chassis by a thumbscrew.
When using the PC lens, the best beam characteristic is achieved by attaching the 45 mm aperture ring. For
instructions on changing the aperture ring see "Changing the aperture ring" on page 22.
18
Half-peak angle
Half-peak angle
Half-peak angle
Half-peak angle
MAC 2000 Wash XB
1/10 peak angle
5.5° 12.5
7° 13°
22° 35°
1/10 peak angle
7° 12.5°
8.5° 15°
24° 39°
1/10 peak angle
37° 73°
40° 76°
50° 91°
1/10 peak angle
6.5° 9.5°
6.5° 12°
18° 33°