Common techniques for Motion Compensated Frame Rate Conversion suffer from occlusion which, if not taken explicitly into account, causes a visually disturbing artifact known as \u2018halo\u2019. Some embodiments position drives in counter-rotating pairs, each simultaneously accessing half the data, such that seek-caused actuator rotational-acceleration vibration cause simultaneous canceling rotational torque. These interference components may be generated by an optical component such as a color modulator of the projection system. A projection on the first surface of the radiating element partially covers the opening. The heat exchanger is configured to cool an air flow directed toward the test electronics.