Abstract: A communications headset includes one or more directional speakers mounted in left and right temple housings positioned near a wearer's ears, with acoustic channels within the temple housings configured to direct sound waves toward the ear canals. The temple housings form an open-ear configuration, allowing external noises to reach the ears unobstructed. Each directional speaker is acoustically coupled to a contoured channel that delivers focused audio to the wearer's ear with minimal sound wave leakage. An in-ear speaker, magnetically secured and tethered to the temple housing, provides optional noise-isolated listening. A user-controlled selection switch allows a wearer to toggle between open-ear and in-ear modes. The headset also includes a boom microphone, volume controls, and USB charging and communication ports.

Abstract: An audio cable connector with selectable impedance includes low impedance interface circuitry and high impedance interface circuitry, and a user-operable switch to allow a user to select either of the two impedances to connect to a headset microphone. With the audio cable connector in communication between a headset and equipment, the user may select the appropriate impedance interface circuitry to allow the headset to operate properly with the equipment.

Abstract: A tactical vest worn communication control hub has cables extending to transceivers, a headset, and PTT switches. The cables are operationally interconnected within the hub by a circuit board to enable the switches to control operation of the transceivers to receive and transmit and to convey audio signals to and from the headset. The hub is configured to be removably attached to the rear of the vest.