Triad-Orbit Precision SM-UM1 - Swivel Speaker MountThe Precision SM UM1 is designed to accommodate a smaller, lighter range of speakers than the larger SM 1. As Immersive sound grows, smaller Atmos mix rooms are becoming more common, thus, the SPL levels are lower at a closer proximity and larger format studio monitors are less necessary. UM1 does not use the pin locking system that SM 1 boasts, yet the powerful tilt function has built in locking teeth. The pan knob has adequate strength to hold the