City Theatrical 2575 2.76 Donut for Source Four Mini

City Theatrical's 2575 is a 2.76" x 2.76" donut with a 2.3" diameter hole, specifically designed for ETC Source Four™ Mini fixtures.

City Theatrical Donuts are used in the color frame slot of an ellipsoidal reflector spotlight to sharpen gobo projections.

Similar to the way the human eye sharpens focus when it squints, a donut reduces the aperture and sharpens the output of the fixture.

There is some reduction in brightness to achieve this increase in sharpness but this is often a tradeoff that designers are willing to make.

City Theatrical 2575 Donut Features:Used to help bring templates into perfect sharpnessDurable black powdercoat finishFabricated from light gauge steel