What size gobo holder fits a ETC Source Four?
The truth is that the Regular ETC Source Four 575 watt and 750 watt units have a choice of three gobo holders available, and the ETC Source Four Jr. has two gobo holder options available.
The 575watt and the 750 watt units can either accept an A size gobo holder, or a B size gobo holder, or a glass gobo holder.
The ETC 575 watt Source Four Jr. takes an M size holder, or glass M size gobo holder.
