The SS7747 Crank-Up Subwoofer Attachment Shaft features an integrated crank-operated mechanism that provides assistive power, making it safe and ergonomic for one person to raise and lower a heavy speaker. This shaft mounts to the top of a subwoofer cabinet to support speakers with standard pole-mount sockets, without using a separate floor stand. The mounting pole's M20 threading at the base connects to subs with an M20-threaded socket, a connection method that greatly reduces tilt and wobble. The shaft's height adjusts to accommodate a variety of applications and locks in place to ensure reliable positioning.