A locking paddle handle assembly for closures has a housing with a paddle handle pivotally mounted therein, a latch which latches and unlatches the closure upon rotation of the paddle handle, and a exterior key lock with a movable member that shifts between locked and unlocked positions. The IO subsystem is coupled to one or more host computers and includes one or more peripheral buses, a set of peripheral devices, and a set of expanders with each expander having a valid expander address and being arranged to couple a pair of the peripheral buses. The bipolar voice coil signal is adjusted so that the product of the bandwidth limited positive definite field coil current and the bipolar voice coil current, hence the actuation force, is a linear function of the bipolar audio input current.