Control over tilt angle, also known as elevation angle, is critical for modern professional loudspeaker systems with tightly defined dispersion patterns. The common convention is for 0 degrees of elevation to be considered as aiming straight out at the horizon. -90 degrees of elevation is straight down. Products for tilt control include a small number of basic systems. Our Spine Frame Adapter™ for line array rigging allows for accuracy of adjustment to one tenth of a degree while under load. Tilt Cable Kits are usually the most effective method of tilt control for single speaker rigging or audio rigging. Yokes (also known as U-brackets) are a low cost way to provide pan and tilt control for speakers that have yoke mounting points. Polar Focus will always provide tilt control on any cluster or speaker design unless directed otherwise.