SM-UM1 is designed to accommodate a smaller, lighter range of speakers than the larger SM-SW1. 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 neccessary. SM-UM1 does not use the pin locking system that SM-SW1 boasts, yet the powerful tilt function has built-in locking teeth. The pan knob has adequate strength to hold the pan adjustment in place. The universal mount pattern of SM-UM1 allows it to adapt to virtually any 2-hole speaker pattern, regardless of manufacturer up to 25 lbs. The back plate of SM-UM1 has been designed to slide into our SM-WM1 wall mount for ease of installation, if desired.