Which part of the MXU-835/P subsystem is responsible for audio monitoring?

The part of the MXU-835/P subsystem that is responsible for audio monitoring is the speaker. The speaker allows for the transmission of audio signals, which can include communications and alerts necessary for flight operations. It enables aircrew members to hear pertinent information and instructions during a flight, contributing to overall situational awareness and safety.

The microphone is primarily used for capturing audio input, such as the aircrew's voice, while the control panel serves as the interface for managing various functions within the subsystem. The headset jack provides connectivity for headsets, which typically includes both speaker and microphone functionality; however, it does not perform audio monitoring directly on its own. Therefore, the speaker is the essential component for audio monitoring, allowing personnel to receive and process audio information effectively during flight operations.