The Schoeps CB 140 IRT Cross Mounting Bar is an arrangement designed for ambient recording. It features a transparent and spacious rendering of the acoustic environment. This cross mounting bar is used as a 4-channel arrangement for room tone, such as in combination with the OCT surround system. This setup can also be used for full surround, such as 360° cinema sound recording or other playback arrangements, wherein the speakers are placed in the 4 corners of a square. The CB 140 is a modified form of the IRT cross, which supports 4 supercardioids. This set up requires the microphones to be apart by only 5.51"(140mm). This cross mounting bar is quite small in size.