Rotated fully clockwise enables the sign level being the same as if the controller wasn't getting used. Counter-clockwise rotation attenuates the Subwoofer output signal. They only have the ability to "serve" a page from our web site and set items in the cart. You’re in control all of the time, https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw